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aiturk-hermes-ide/tests/agent/transports/test_codex_transport.py
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1546 lines
63 KiB
Python

"""Tests for the ResponsesApiTransport (Codex)."""
import json
import pytest
from types import SimpleNamespace
from agent.transports import get_transport
from agent.transports.types import NormalizedResponse
@pytest.fixture
def transport():
import agent.transports.codex # noqa: F401
return get_transport("codex_responses")
class TestCodexTransportBasic:
def test_api_mode(self, transport):
assert transport.api_mode == "codex_responses"
def test_registered_on_import(self, transport):
assert transport is not None
def test_convert_tools(self, transport):
tools = [{
"type": "function",
"function": {
"name": "terminal",
"description": "Run a command",
"parameters": {"type": "object", "properties": {"command": {"type": "string"}}},
}
}]
result = transport.convert_tools(tools)
assert len(result) == 1
assert result[0]["type"] == "function"
assert result[0]["name"] == "terminal"
class TestCodexBuildKwargs:
def test_900k_context_variant_suffix_stripped_on_wire(self, transport):
"""``-900k`` large-context picker variants are Hermes-side aliases —
the Codex backend only knows the base slug, so build_kwargs must
strip the suffix from the wire model id."""
messages = [{"role": "user", "content": "Hi"}]
kw = transport.build_kwargs(
model="gpt-5.6-sol-900k", messages=messages, tools=[],
params={"is_codex_backend": True},
)
assert kw["model"] == "gpt-5.6-sol"
def test_base_slug_model_id_unchanged_on_wire(self, transport):
messages = [{"role": "user", "content": "Hi"}]
kw = transport.build_kwargs(
model="gpt-5.6-sol", messages=messages, tools=[],
params={"is_codex_backend": True},
)
assert kw["model"] == "gpt-5.6-sol"
def test_cache_key_is_content_addressed_not_session_id(self, transport):
"""prompt_cache_key is content-addressed from the static prefix
(instructions + tools), not the session_id. This keeps recurring cron
jobs — whose session_id carries a per-fire timestamp — on a stable warm
cache key. The key is a 'pck_' hash and must NOT equal session_id."""
messages = [{"role": "user", "content": "Hi"}]
kw = transport.build_kwargs(
model="gpt-5.4", messages=messages, tools=[],
session_id="cron_job42_20260624_143000",
)
pck = kw.get("prompt_cache_key", "")
assert pck.startswith("pck_")
assert pck != "cron_job42_20260624_143000"
def test_cache_key_stable_across_session_ids(self, transport):
"""Same static prefix + different session_id (e.g. two cron fires of the
same job) must yield the same prompt_cache_key — the whole point of the
fix: repeated fires reuse the warm prefix instead of going cold."""
messages = [{"role": "user", "content": "Hi"}]
kw1 = transport.build_kwargs(
model="gpt-5.4", messages=messages, tools=[],
session_id="cron_job42_20260624_143000",
)
kw2 = transport.build_kwargs(
model="gpt-5.4", messages=messages, tools=[],
session_id="cron_job42_20260624_143500",
)
assert kw1["prompt_cache_key"] == kw2["prompt_cache_key"]
def test_cache_key_differs_across_unrelated_sessions(self, transport):
"""#78941: two unrelated sessions (different users/conversations)
sharing the same static prefix must NOT collapse onto the same
prompt_cache_key — session_id scopes the hash unless it is a cron
per-fire id, which is normalized to its stable job prefix instead."""
messages = [{"role": "user", "content": "Hi"}]
kw1 = transport.build_kwargs(
model="gpt-5.4", messages=messages, tools=[],
session_id="session_alice_1",
)
kw2 = transport.build_kwargs(
model="gpt-5.4", messages=messages, tools=[],
session_id="session_bob_1",
)
assert kw1["prompt_cache_key"] != kw2["prompt_cache_key"]
def test_github_responses_drops_message_item_id_end_to_end(self, transport):
# #32716: Copilot binds codex_message_items ids to a backend
# "connection" that doesn't survive credential rotation, a gateway
# restart, or load-balancer churn — replaying a stale id gets HTTP
# 401 "input item ID does not belong to this connection", even for
# ids well under the #27038 64-char length cap. build_kwargs must
# thread is_github_responses through to the input converter so the
# id never reaches the request.
messages = [
{"role": "system", "content": "You are Hermes."},
{
"role": "assistant",
"content": "pong",
"codex_message_items": [
{
"type": "message",
"role": "assistant",
"status": "in_progress",
"content": [{"type": "output_text", "text": "pong"}],
"id": "msg_short_but_connection_scoped",
"phase": "final_answer",
}
],
},
]
kw = transport.build_kwargs(
model="gpt-5.5", messages=messages, tools=[],
is_github_responses=True,
)
message_item = next(item for item in kw["input"] if item.get("type") == "message")
assert "id" not in message_item
assert message_item["phase"] == "final_answer"
assert message_item["status"] == "in_progress"
assert message_item["content"] == [{"type": "output_text", "text": "pong"}]
def test_non_github_responses_keeps_message_item_id_end_to_end(self, transport):
messages = [
{"role": "system", "content": "You are Hermes."},
{
"role": "assistant",
"content": "pong",
"codex_message_items": [
{
"type": "message",
"role": "assistant",
"status": "completed",
"content": [{"type": "output_text", "text": "pong"}],
"id": "msg_short_id",
}
],
},
]
kw = transport.build_kwargs(
model="gpt-5.5", messages=messages, tools=[],
is_codex_backend=True,
)
message_item = next(item for item in kw["input"] if item.get("type") == "message")
assert message_item["id"] == "msg_short_id"
@pytest.mark.parametrize("model", [
"gpt-5.5",
"gpt-5.5-pro",
"gpt-5.4",
"gpt-5.2",
"gpt-5.1-codex-max",
"gpt-5.1",
"gpt-5.1-codex",
"gpt-5.1-codex-mini",
"gpt-5.1-chat-latest",
"gpt-5",
"gpt-5-codex",
"gpt-4.1",
"openai.gpt-5.5-pro",
"openai/gpt-5.1-codex-2026-01-01",
])
def test_extended_cache_models_set_24h_prompt_cache_retention(self, transport, model):
messages = [{"role": "user", "content": "Hi"}]
kw = transport.build_kwargs(
model=model, messages=messages, tools=[],
session_id="test-session",
base_url="https://bedrock-mantle.us-west-2.api.aws/v1",
)
assert kw["prompt_cache_retention"] == "24h"
@pytest.mark.parametrize("model", ["gpt-5.6", "gpt-4o", "o3"])
def test_prompt_cache_retention_omitted_for_other_model_families(self, transport, model):
kw = transport.build_kwargs(
model=model,
messages=[{"role": "user", "content": "Hi"}],
tools=[],
session_id="test-session",
base_url="https://bedrock-mantle.us-west-2.api.aws/v1",
)
assert "prompt_cache_retention" not in kw
@pytest.mark.parametrize("base_url", [
"https://api.openai.com/v1",
"https://example.openai.azure.com/openai/v1",
"https://api.x.ai/v1",
"https://models.github.ai/inference",
"https://api.githubcopilot.com",
"https://chatgpt.com/backend-api/codex",
"https://responses.example.com/v1",
"https://bedrock-mantle.us-west-2.api.aws.example/v1",
"https://example.com/bedrock-mantle.us-west-2.api.aws/v1",
])
def test_prompt_cache_retention_omitted_for_non_mantle_endpoints(self, transport, base_url):
kw = transport.build_kwargs(
model="gpt-5.4",
messages=[{"role": "user", "content": "Hi"}],
tools=[],
base_url=base_url,
)
assert "prompt_cache_retention" not in kw
def test_xai_responses_sends_cache_key_via_extra_body(self, transport):
"""xAI's Responses API documents ``prompt_cache_key`` as the
body-level cache-routing key (the ``x-grok-conv-id`` header is
Chat-Completions-only). Passing it via ``extra_body`` is robust
against openai SDK builds whose ``Responses.stream()`` kwarg
signature ever drops the field — the body field still serializes
and reaches xAI either way. The ``x-grok-conv-id`` header is kept
as a belt-and-braces fallback so cache routing survives even
when the body field would be stripped by an intermediate proxy.
Ref: https://docs.x.ai/developers/advanced-api-usage/prompt-caching/maximizing-cache-hits
"""
messages = [{"role": "user", "content": "Hi"}]
kw = transport.build_kwargs(
model="grok-4.3", messages=messages, tools=[],
session_id="conv-xai-1",
is_xai_responses=True,
)
assert "prompt_cache_key" not in kw
# Body-level prompt_cache_key is content-addressed (pck_ hash), not the
# raw session_id, so recurring cron fires stay on a stable warm key.
eb_pck = kw.get("extra_body", {}).get("prompt_cache_key", "")
assert eb_pck.startswith("pck_")
assert eb_pck != "conv-xai-1"
# x-grok-conv-id stays the session/transcript id, not the cache key.
assert kw.get("extra_headers", {}).get("x-grok-conv-id") == "conv-xai-1"
def test_xai_responses_extra_body_preserves_caller_fields(self, transport):
"""When the caller already supplies ``extra_body`` (e.g. via
request_overrides), the xAI cache-key injection must merge into
the existing dict instead of overwriting it. Caller-supplied
``prompt_cache_key`` wins (setdefault semantics) so user overrides
aren't silently clobbered by the transport."""
messages = [{"role": "user", "content": "Hi"}]
kw = transport.build_kwargs(
model="grok-4.3", messages=messages, tools=[],
session_id="conv-xai-1",
is_xai_responses=True,
request_overrides={"extra_body": {"prompt_cache_key": "caller-override", "other_field": 42}},
)
eb = kw.get("extra_body", {})
assert eb.get("prompt_cache_key") == "caller-override"
assert eb.get("other_field") == 42
# ── Azure Foundry post-tool reasoning suppression ──────────────────
#
# Foundry's Responses surface accepts the initial function-call request
# and ordinary multi-turn continuity, but rejects the post-tool follow-up
# payload when a replayed encrypted ``reasoning`` item sits alongside
# ``function_call`` / ``function_call_output`` (HTTP 400 invalid_payload).
# Suppression is scoped to that follow-up turn only.
@staticmethod
def _reasoning_item():
return {"type": "reasoning", "encrypted_content": "sealed", "summary": []}
@classmethod
def _post_tool_messages(cls):
"""user → assistant(tool_calls + reasoning) → tool result."""
return [
{"role": "user", "content": "Create a marker"},
{
"role": "assistant",
"content": "",
"codex_reasoning_items": [cls._reasoning_item()],
"tool_calls": [
{
"id": "call_marker",
"type": "function",
"function": {"name": "write_marker", "arguments": "{}"},
}
],
},
{
"role": "tool",
"tool_call_id": "call_marker",
"content": "marker written",
},
]
AZURE_FOUNDRY_BASE_URL = (
"https://placeholder.services.ai.azure.com/"
"api/projects/placeholder/openai/v1"
)
def test_post_tool_replay_preserves_reasoning_for_default_responses(self, transport):
"""Non-Azure Responses endpoints keep post-tool reasoning replay."""
kw = transport.build_kwargs(
model="gpt-5.4",
messages=self._post_tool_messages(),
tools=[],
replay_encrypted_reasoning=True,
)
item_types = [item.get("type") for item in kw["input"] if isinstance(item, dict)]
assert "reasoning" in item_types
assert "function_call" in item_types
assert "function_call_output" in item_types
assert kw.get("include") == ["reasoning.encrypted_content"]
def test_azure_foundry_post_tool_replay_suppresses_reasoning_items(self, transport):
"""The rejected payload shape drops reasoning, keeps tool continuity."""
kw = transport.build_kwargs(
model="gpt-5.4",
messages=self._post_tool_messages(),
tools=[],
provider="azure-foundry",
base_url=self.AZURE_FOUNDRY_BASE_URL,
replay_encrypted_reasoning=True,
)
item_types = [item.get("type") for item in kw["input"] if isinstance(item, dict)]
assert "reasoning" not in item_types
assert "function_call" in item_types
assert "function_call_output" in item_types
assert kw.get("include") == []
def test_azure_foundry_detected_by_host_without_provider(self, transport):
"""Foundry detection works on the endpoint host alone."""
kw = transport.build_kwargs(
model="gpt-5.4",
messages=self._post_tool_messages(),
tools=[],
base_url=self.AZURE_FOUNDRY_BASE_URL,
replay_encrypted_reasoning=True,
)
item_types = [item.get("type") for item in kw["input"] if isinstance(item, dict)]
assert "reasoning" not in item_types
@pytest.mark.parametrize(
"base_url",
[
"https://proxy.example.com/.services.ai.azure.com/openai/v1",
"https://openrouter.ai/api/v1?upstream=.services.ai.azure.com",
"https://services.ai.azure.com.evil.example/v1",
],
)
def test_non_foundry_host_lookalikes_keep_reasoning(self, transport, base_url):
"""A Foundry domain in a path/query/suffix is not a Foundry endpoint.
Guards against the substring-match false positive: these URLs all
contain the Foundry domain but are served by someone else, and
suppressing their reasoning replay would silently degrade
cross-turn coherence on an unrelated provider.
"""
kw = transport.build_kwargs(
model="gpt-5.4",
messages=self._post_tool_messages(),
tools=[],
base_url=base_url,
replay_encrypted_reasoning=True,
)
item_types = [item.get("type") for item in kw["input"] if isinstance(item, dict)]
assert "reasoning" in item_types
assert kw.get("include") == ["reasoning.encrypted_content"]
def test_azure_foundry_non_tool_follow_up_preserves_reasoning_items(self, transport):
"""Ordinary (non-tool) Azure Foundry continuity is unchanged.
A plain assistant reasoning turn followed by another user message has
no tool continuity, so the encrypted reasoning item must still be
replayed — Foundry only rejects the post-tool payload.
"""
messages = [
{"role": "user", "content": "Explain recursion"},
{
"role": "assistant",
"content": "Recursion is when a function calls itself.",
"codex_reasoning_items": [self._reasoning_item()],
},
{"role": "user", "content": "Give an example"},
]
kw = transport.build_kwargs(
model="gpt-5.4",
messages=messages,
tools=[],
provider="azure-foundry",
base_url=self.AZURE_FOUNDRY_BASE_URL,
replay_encrypted_reasoning=True,
)
item_types = [item.get("type") for item in kw["input"] if isinstance(item, dict)]
assert "reasoning" in item_types
assert "function_call" not in item_types
assert "function_call_output" not in item_types
assert kw.get("include") == ["reasoning.encrypted_content"]
def test_azure_foundry_user_turn_after_completed_tool_call_keeps_reasoning(
self, transport
):
"""Suppression must not stick for the rest of the conversation.
The tool call completed and the assistant already answered; this turn
is a plain user follow-up whose payload ends on a user message, which
Foundry accepts. A predicate that scanned the whole history for any
tool call plus any tool result would suppress reasoning here — and on
every later turn — which is the all-turns behavior this scoping
exists to avoid.
"""
messages = self._post_tool_messages() + [
{
"role": "assistant",
"content": "Marker created.",
"codex_reasoning_items": [self._reasoning_item()],
},
{"role": "user", "content": "Now explain recursion"},
]
kw = transport.build_kwargs(
model="gpt-5.4",
messages=messages,
tools=[],
provider="azure-foundry",
base_url=self.AZURE_FOUNDRY_BASE_URL,
replay_encrypted_reasoning=True,
)
item_types = [item.get("type") for item in kw["input"] if isinstance(item, dict)]
assert "reasoning" in item_types
assert "function_call" in item_types
assert "function_call_output" in item_types
assert kw.get("include") == ["reasoning.encrypted_content"]
def test_azure_foundry_parallel_tool_results_suppress_reasoning(self, transport):
"""A trailing run of parallel tool results is still the rejected shape."""
messages = [
{"role": "user", "content": "Read both files"},
{
"role": "assistant",
"content": "",
"codex_reasoning_items": [self._reasoning_item()],
"tool_calls": [
{
"id": "call_a",
"type": "function",
"function": {"name": "read_file", "arguments": "{}"},
},
{
"id": "call_b",
"type": "function",
"function": {"name": "read_file", "arguments": "{}"},
},
],
},
{"role": "tool", "tool_call_id": "call_a", "content": "a"},
{"role": "tool", "tool_call_id": "call_b", "content": "b"},
]
kw = transport.build_kwargs(
model="gpt-5.4",
messages=messages,
tools=[],
provider="azure-foundry",
base_url=self.AZURE_FOUNDRY_BASE_URL,
replay_encrypted_reasoning=True,
)
item_types = [item.get("type") for item in kw["input"] if isinstance(item, dict)]
assert "reasoning" not in item_types
assert item_types.count("function_call_output") == 2
def test_azure_foundry_respects_caller_replay_disabled(self, transport):
"""An explicit replay_encrypted_reasoning=False is not re-enabled."""
kw = transport.build_kwargs(
model="gpt-5.4",
messages=self._post_tool_messages(),
tools=[],
provider="azure-foundry",
base_url=self.AZURE_FOUNDRY_BASE_URL,
replay_encrypted_reasoning=False,
)
item_types = [item.get("type") for item in kw["input"] if isinstance(item, dict)]
assert "reasoning" not in item_types
assert kw.get("include") == []
@pytest.mark.parametrize(
"tool_call,tool_call_id",
[
# Responses histories carry the function call id in call_id while
# ``id`` holds the response item id. Resumed legacy sessions and
# host-fed histories still use this shape.
({"id": "fc_item_a", "call_id": "call_a"}, "call_a"),
# Plain chat-completions shape: id IS the call id.
({"id": "call_a"}, "call_a"),
# Bare fc_ id with no call_id — the converter derives call_<rest>.
({"id": "fc_a"}, "call_a"),
# Composite stored id, on either side of the pairing.
({"id": "call_a|fc_a"}, "call_a"),
({"id": "call_a"}, "call_a|fc_a"),
# call_id present, no id at all.
({"call_id": "call_a"}, "call_a"),
],
)
def test_azure_foundry_suppresses_across_tool_call_id_shapes(
self, transport, tool_call, tool_call_id
):
"""Every id shape the converter can pair must be detected.
The converter resolves a function call's identity as
``call_id`` -> embedded ``id`` -> derived from an ``fc_`` item id, and
splits composite ``"call_x|fc_y"`` ids. A predicate that matched only
``tool_calls[*].id`` would miss the id=fc_ / call_id=call_ shape: the
converter still emits paired function_call / function_call_output, so
the exact payload Foundry rejects would ship with the reasoning item
intact.
"""
messages = [
{"role": "user", "content": "Create a marker"},
{
"role": "assistant",
"content": "",
"codex_reasoning_items": [self._reasoning_item()],
"tool_calls": [
{**tool_call, "type": "function",
"function": {"name": "write_marker", "arguments": "{}"}}
],
},
{"role": "tool", "tool_call_id": tool_call_id, "content": "marker written"},
]
kw = transport.build_kwargs(
model="gpt-5.4",
messages=messages,
tools=[],
provider="azure-foundry",
base_url=self.AZURE_FOUNDRY_BASE_URL,
replay_encrypted_reasoning=True,
)
item_types = [item.get("type") for item in kw["input"] if isinstance(item, dict)]
# The converter paired them, so this is the rejected shape.
assert "function_call" in item_types
assert "function_call_output" in item_types
assert "reasoning" not in item_types
assert kw.get("include") == []
def test_azure_foundry_unpaired_tool_result_keeps_reasoning(self, transport):
"""A tool result that pairs with nothing is not the rejected shape."""
messages = [
{"role": "user", "content": "Create a marker"},
{
"role": "assistant",
"content": "",
"codex_reasoning_items": [self._reasoning_item()],
"tool_calls": [
{
"id": "fc_item_x",
"call_id": "call_x",
"type": "function",
"function": {"name": "write_marker", "arguments": "{}"},
}
],
},
{"role": "tool", "tool_call_id": "call_unrelated", "content": "?"},
]
kw = transport.build_kwargs(
model="gpt-5.4",
messages=messages,
tools=[],
provider="azure-foundry",
base_url=self.AZURE_FOUNDRY_BASE_URL,
replay_encrypted_reasoning=True,
)
item_types = [item.get("type") for item in kw["input"] if isinstance(item, dict)]
assert "reasoning" in item_types
assert kw.get("include") == ["reasoning.encrypted_content"]
def test_xai_top_level_override_also_governs_extra_body(self, transport):
"""A caller's top-level request_overrides={"prompt_cache_key": ...}
must win in extra_body.prompt_cache_key too -- the field xAI actually
reads -- instead of being silently outrun by the auto-derived
content-hash cache_key (#78941)."""
messages = [{"role": "user", "content": "Hi"}]
kw = transport.build_kwargs(
model="grok-4.3", messages=messages, tools=[],
session_id="conv-xai-1",
is_xai_responses=True,
request_overrides={"prompt_cache_key": "caller-top-level"},
)
assert kw["prompt_cache_key"] == "caller-top-level"
assert kw["extra_body"]["prompt_cache_key"] == "caller-top-level"
@pytest.mark.parametrize("length", [64, 65])
def test_codex_cache_scope_boundary(self, transport, length):
session_id = "s" * length
kw = transport.build_kwargs(
model="gpt-5.4",
messages=[{"role": "user", "content": "Hi"}],
tools=[],
session_id=session_id,
is_codex_backend=True,
request_overrides={"extra_headers": {"x-test": "1"}},
)
headers = kw["extra_headers"]
assert headers["x-test"] == "1"
# session_id header carries the raw physical id untouched regardless
# of length (#57012); x-client-request-id mirrors the body's
# effective (already-bounded) prompt_cache_key.
assert headers["session_id"] == session_id
assert headers["x-client-request-id"] == kw["prompt_cache_key"]
assert len(headers["x-client-request-id"]) <= 64
def test_codex_cache_scope_headers_normalize_cron_session_id(self, transport):
"""x-client-request-id shares a cache scope across cron re-fires of the
same job (cron per-fire timestamp stripped, same as prompt_cache_key),
while session_id stays the raw per-fire physical id (#57012)."""
first_run = transport.build_kwargs(
model="gpt-5.4",
messages=[{"role": "user", "content": "Hi"}],
tools=[],
session_id="cron_job42_20260801_090000",
is_codex_backend=True,
)["extra_headers"]
second_run = transport.build_kwargs(
model="gpt-5.4",
messages=[{"role": "user", "content": "Hi"}],
tools=[],
session_id="cron_job42_20260802_090000",
is_codex_backend=True,
)["extra_headers"]
other_job = transport.build_kwargs(
model="gpt-5.4",
messages=[{"role": "user", "content": "Hi"}],
tools=[],
session_id="cron_job99_20260801_090000",
is_codex_backend=True,
)["extra_headers"]
assert first_run["session_id"] == "cron_job42_20260801_090000"
assert second_run["session_id"] == "cron_job42_20260802_090000"
assert first_run["x-client-request-id"].startswith("pck_")
assert first_run["x-client-request-id"] == second_run["x-client-request-id"]
assert first_run["x-client-request-id"] != other_job["x-client-request-id"]
def test_xai_injects_native_web_search_when_client_web_search_present(self, transport, monkeypatch):
"""When the active/configured search backend is xAI, swap client
``web_search`` for Grok's native built-in so server-side search
completes (otherwise the turn stalls as incomplete → 3 retries).
Non-conflicting client tools are preserved.
"""
import agent.transports.codex as codex_mod
monkeypatch.setattr(codex_mod, "_xai_prefers_native_web_search", lambda: True)
messages = [{"role": "user", "content": "Find current prices."}]
kw = transport.build_kwargs(
model="grok-composer-2.5-fast", messages=messages,
tools=[
{"type": "function", "function": {
"name": "read_file", "description": "Read a file.",
"parameters": {"type": "object",
"properties": {"path": {"type": "string"}}}}},
{"type": "function", "function": {
"name": "web_search", "description": "Search the web.",
"parameters": {"type": "object",
"properties": {"query": {"type": "string"}}}}},
],
is_xai_responses=True,
)
tool_types = [t.get("type") for t in kw.get("tools", [])]
assert "web_search" in tool_types, kw.get("tools")
# Non-conflicting client-side tools are preserved.
names = [t.get("name") for t in kw.get("tools", []) if t.get("type") == "function"]
assert "read_file" in names
assert "web_search" not in names
assert "hermes_web_search" not in names
def test_xai_renames_client_web_search_when_firecrawl_configured(self, transport, monkeypatch):
"""Configured Firecrawl (or any non-xai backend) must keep Hermes
dispatch — rename the wire tool so Grok cannot hijack ``web_search``.
"""
import agent.transports.codex as codex_mod
monkeypatch.setattr(codex_mod, "_xai_prefers_native_web_search", lambda: False)
messages = [{"role": "user", "content": "Find current prices."}]
kw = transport.build_kwargs(
model="grok-4.5", messages=messages,
tools=[
{"type": "function", "function": {
"name": "read_file", "description": "Read a file.",
"parameters": {"type": "object",
"properties": {"path": {"type": "string"}}}}},
{"type": "function", "function": {
"name": "web_search", "description": "Search the web.",
"parameters": {"type": "object",
"properties": {"query": {"type": "string"}}}}},
],
is_xai_responses=True,
)
tools = kw.get("tools", [])
assert not any(t.get("type") == "web_search" for t in tools), tools
names = [t.get("name") for t in tools if t.get("type") == "function"]
assert "read_file" in names
assert "hermes_web_search" in names
assert "web_search" not in names
def test_xai_normalize_maps_client_web_search_alias_back(self, transport, monkeypatch):
"""Alias used on the wire must become ``web_search`` for Hermes dispatch."""
import agent.transports.codex as codex_mod
msg = SimpleNamespace(
content=None,
reasoning=None,
tool_calls=[
SimpleNamespace(
id="call_1",
call_id="call_1",
response_item_id="fc_1",
function=SimpleNamespace(
name=codex_mod._XAI_CLIENT_WEB_SEARCH_ALIAS,
arguments='{"query":"hermes"}',
),
)
],
codex_reasoning_items=None,
codex_message_items=None,
reasoning_details=None,
)
response = SimpleNamespace(output=[], status="completed")
monkeypatch.setattr(
"agent.codex_responses_adapter._normalize_codex_response",
lambda resp, issuer_kind=None: (msg, "tool_calls"),
)
normalized = transport.normalize_response(response)
assert normalized.tool_calls is not None
assert len(normalized.tool_calls) == 1
assert normalized.tool_calls[0].name == "web_search"
def test_xai_does_not_inject_native_web_search_without_client_web_search(self, transport):
"""The native ``web_search`` built-in is a 1:1 swap for an
already-requested client ``web_search`` — NOT an additive grant. A
turn whose toolset has no ``web_search`` (user never enabled the web
toolset) must not get Grok server-side search force-injected, which
would silently bypass Hermes's web-provider config and tool-trace
plumbing for every xai-oauth turn.
"""
messages = [{"role": "user", "content": "Read this file."}]
kw = transport.build_kwargs(
model="grok-composer-2.5-fast", messages=messages,
tools=[{"type": "function", "function": {
"name": "read_file", "description": "Read a file.",
"parameters": {"type": "object",
"properties": {"path": {"type": "string"}}}}}],
is_xai_responses=True,
)
tools = kw.get("tools", [])
assert not any(t.get("type") == "web_search" for t in tools), tools
names = [t.get("name") for t in tools if t.get("type") == "function"]
assert "read_file" in names
def test_non_xai_path_does_not_inject_native_web_search(self, transport):
"""Native web_search injection is scoped to xAI — Codex/GitHub paths
keep the client-side web_search function untouched."""
messages = [{"role": "user", "content": "Search."}]
kw = transport.build_kwargs(
model="gpt-5.4", messages=messages,
tools=[{"type": "function", "function": {
"name": "web_search", "description": "Search the web.",
"parameters": {"type": "object",
"properties": {"query": {"type": "string"}}}}}],
is_xai_responses=False,
)
tools = kw.get("tools", [])
assert not any(t.get("type") == "web_search" for t in tools)
assert any(
t.get("type") == "function" and t.get("name") == "web_search"
for t in tools
)
# --- Grok reasoning-effort capability allowlist ---
# api.x.ai 400s with "Model X does not support parameter reasoningEffort"
# on grok-4 / grok-4-fast / grok-3 / grok-code-fast / grok-4.20-0309-*.
# Those models reason natively but don't expose the dial. The transport
# must omit the `reasoning` key for them. As of May 2026 we DO request
# ``reasoning.encrypted_content`` back from xAI on every model —
# see test_xai_reasoning_effort_passed for the rationale.
def test_xai_grok_4_20_0309_variants_omit_reasoning_effort(self, transport):
"""grok-4.20-0309-(non-)reasoning reject the effort dial.
Counterintuitively, only grok-4.20-multi-agent-0309 accepts it.
"""
messages = [{"role": "user", "content": "Hi"}]
for model in ("grok-4.20-0309-reasoning", "grok-4.20-0309-non-reasoning"):
kw = transport.build_kwargs(
model=model, messages=messages, tools=[],
is_xai_responses=True,
reasoning_config={"effort": "high"},
)
assert "reasoning" not in kw, f"{model} must not receive reasoning"
class TestOpencodeReservedToolAliases:
"""OpenCode /v1/responses reserves web_search / search_files as function
names (HTTP 400 "custom function name 'X' is reserved", #85589). The
transport aliases them on the wire and maps them back on dispatch."""
@pytest.fixture
def transport(self):
from agent.transports.codex import ResponsesApiTransport
return ResponsesApiTransport()
_TOOLS = [
{"type": "function", "function": {
"name": "search_files", "description": "Search files.",
"parameters": {"type": "object",
"properties": {"pattern": {"type": "string"}}}}},
{"type": "function", "function": {
"name": "web_search", "description": "Search the web.",
"parameters": {"type": "object",
"properties": {"query": {"type": "string"}}}}},
{"type": "function", "function": {
"name": "read_file", "description": "Read a file.",
"parameters": {"type": "object",
"properties": {"path": {"type": "string"}}}}},
]
def _names(self, kw):
return [t.get("name") for t in kw.get("tools", []) if t.get("type") == "function"]
def test_builtin_opencode_go_aliases_reserved_names(self, transport):
kw = transport.build_kwargs(
model="grok-4.5",
messages=[{"role": "user", "content": "hi"}],
tools=list(self._TOOLS),
provider="opencode-go",
base_url="https://opencode.ai/zen/go/v1",
)
names = self._names(kw)
assert "hermes_search_files" in names
assert "hermes_web_search" in names
assert "search_files" not in names
assert "web_search" not in names
assert "read_file" in names # non-reserved untouched
def test_custom_opencode_family_provider_aliases_reserved_names(self, transport):
"""Custom opencode-go-* providers get the same aliasing (#85589)."""
kw = transport.build_kwargs(
model="grok-4.5",
messages=[{"role": "user", "content": "hi"}],
tools=list(self._TOOLS),
provider="opencode-go-bridge",
base_url="https://opencode.ai/zen/go/v1",
)
names = self._names(kw)
assert "hermes_search_files" in names
assert "search_files" not in names
def test_opencode_host_match_without_family_provider(self, transport):
"""An arbitrary custom provider pointing at opencode.ai still aliases."""
kw = transport.build_kwargs(
model="gpt-5.6-luna",
messages=[{"role": "user", "content": "hi"}],
tools=list(self._TOOLS),
provider="my-oc-proxy",
base_url="https://opencode.ai/zen/go/v1",
)
names = self._names(kw)
assert "hermes_search_files" in names
assert "hermes_web_search" in names
def test_non_opencode_backend_keeps_original_names(self, transport):
kw = transport.build_kwargs(
model="gpt-5.4",
messages=[{"role": "user", "content": "hi"}],
tools=list(self._TOOLS),
provider="openai-codex",
base_url="https://api.openai.com/v1",
)
names = self._names(kw)
assert "search_files" in names
assert "web_search" in names
assert "hermes_search_files" not in names
def test_normalize_maps_reserved_aliases_back(self, transport, monkeypatch):
msg = SimpleNamespace(
content=None,
reasoning=None,
tool_calls=[
SimpleNamespace(
id="call_1", call_id="call_1", response_item_id="fc_1",
function=SimpleNamespace(
name="hermes_search_files",
arguments='{"pattern":"README"}',
),
),
SimpleNamespace(
id="call_2", call_id="call_2", response_item_id="fc_2",
function=SimpleNamespace(
name="hermes_web_search",
arguments='{"query":"hermes"}',
),
),
],
codex_reasoning_items=None,
codex_message_items=None,
reasoning_details=None,
)
response = SimpleNamespace(output=[], status="completed")
monkeypatch.setattr(
"agent.codex_responses_adapter._normalize_codex_response",
lambda resp, issuer_kind=None: (msg, "tool_calls"),
)
normalized = transport.normalize_response(response)
names = [tc.name for tc in normalized.tool_calls]
assert names == ["search_files", "web_search"]
class TestXaiReservedToolSearchAlias:
"""xAI reserves ``tool_search`` for Grok's native Tool Search and rejects
the client declaration with HTTP 400 (#95003). The transport aliases the
progressive-disclosure bridge on the wire and maps it back on dispatch."""
@pytest.fixture
def transport(self):
from agent.transports.codex import ResponsesApiTransport
return ResponsesApiTransport()
_TOOLS = [
{"type": "function", "function": {
"name": "tool_search", "description": "Search deferred tools.",
"parameters": {"type": "object",
"properties": {"query": {"type": "string"}}}}},
{"type": "function", "function": {
"name": "tool_describe", "description": "Describe a deferred tool.",
"parameters": {"type": "object",
"properties": {"name": {"type": "string"}}}}},
{"type": "function", "function": {
"name": "read_file", "description": "Read a file.",
"parameters": {"type": "object",
"properties": {"path": {"type": "string"}}}}},
]
def _names(self, kw):
return [t.get("name") for t in kw.get("tools", []) if t.get("type") == "function"]
def test_xai_aliases_reserved_tool_search(self, transport):
kw = transport.build_kwargs(
model="grok-4.6",
messages=[{"role": "user", "content": "hi"}],
tools=list(self._TOOLS),
is_xai_responses=True,
)
names = self._names(kw)
assert "hermes_tool_search" in names
assert "tool_search" not in names
# Only ``tool_search`` is reserved — the sibling bridge tools and
# ordinary tools go out untouched.
assert "tool_describe" in names
assert "read_file" in names
def test_non_xai_backend_keeps_tool_search_name(self, transport):
kw = transport.build_kwargs(
model="gpt-5.4",
messages=[{"role": "user", "content": "hi"}],
tools=list(self._TOOLS),
is_codex_backend=True,
base_url="https://api.openai.com/v1",
)
names = self._names(kw)
assert "tool_search" in names
assert "hermes_tool_search" not in names
def test_alias_composes_with_native_web_search_swap(self, transport, monkeypatch):
"""The bridge alias must survive the xAI web_search branch (#48108)."""
import agent.transports.codex as codex_mod
monkeypatch.setattr(codex_mod, "_xai_prefers_native_web_search", lambda: True)
tools = list(self._TOOLS) + [
{"type": "function", "function": {
"name": "web_search", "description": "Search the web.",
"parameters": {"type": "object",
"properties": {"query": {"type": "string"}}}}},
]
kw = transport.build_kwargs(
model="grok-4.6",
messages=[{"role": "user", "content": "hi"}],
tools=tools,
is_xai_responses=True,
)
assert any(t.get("type") == "web_search" for t in kw.get("tools", []))
names = self._names(kw)
assert "hermes_tool_search" in names
assert "tool_search" not in names
def test_normalize_maps_tool_search_alias_back(self, transport, monkeypatch):
msg = SimpleNamespace(
content=None,
reasoning=None,
tool_calls=[
SimpleNamespace(
id="call_1", call_id="call_1", response_item_id="fc_1",
function=SimpleNamespace(
name="hermes_tool_search",
arguments='{"query":"create github issue"}',
),
),
],
codex_reasoning_items=None,
codex_message_items=None,
reasoning_details=None,
)
response = SimpleNamespace(output=[], status="completed")
monkeypatch.setattr(
"agent.codex_responses_adapter._normalize_codex_response",
lambda resp, issuer_kind=None: (msg, "tool_calls"),
)
# Pair the response with a real request so provenance is recorded.
transport.build_kwargs(
model="grok-4.6",
messages=[{"role": "user", "content": "hi"}],
tools=list(self._TOOLS),
is_xai_responses=True,
)
assert transport._last_wire_aliases == {"hermes_tool_search": "tool_search"}
normalized = transport.normalize_response(response)
assert [tc.name for tc in normalized.tool_calls] == ["tool_search"]
def _normalize_named_call(self, transport, monkeypatch, wire_name):
msg = SimpleNamespace(
content=None,
reasoning=None,
tool_calls=[
SimpleNamespace(
id="call_1", call_id="call_1", response_item_id="fc_1",
function=SimpleNamespace(name=wire_name, arguments="{}"),
),
],
codex_reasoning_items=None,
codex_message_items=None,
reasoning_details=None,
)
response = SimpleNamespace(output=[], status="completed")
monkeypatch.setattr(
"agent.codex_responses_adapter._normalize_codex_response",
lambda resp, issuer_kind=None: (msg, "tool_calls"),
)
return transport.normalize_response(response)
def test_no_alias_emitted_means_no_reverse_rewrite(self, transport, monkeypatch):
"""Provenance contract (#95003 review): a request that emitted no
aliases must not have a real ``hermes_tool_search`` tool rewritten."""
real_tool = {"type": "function", "function": {
"name": "hermes_tool_search", "description": "A real MCP tool.",
"parameters": {"type": "object", "properties": {}}}}
transport.build_kwargs(
model="grok-4.6",
messages=[{"role": "user", "content": "hi"}],
tools=[real_tool],
is_xai_responses=True,
)
assert transport._last_wire_aliases == {}
normalized = self._normalize_named_call(
transport, monkeypatch, "hermes_tool_search"
)
assert [tc.name for tc in normalized.tool_calls] == ["hermes_tool_search"]
def test_alias_collision_takes_suffix_no_duplicates(self, transport, monkeypatch):
"""A real tool already named ``hermes_tool_search`` keeps its wire
name; the bridge is suffixed and both round-trip independently."""
tools = [
{"type": "function", "function": {
"name": "hermes_tool_search", "description": "Real tool.",
"parameters": {"type": "object", "properties": {}}}},
{"type": "function", "function": {
"name": "tool_search", "description": "Bridge.",
"parameters": {"type": "object", "properties": {}}}},
]
kw = transport.build_kwargs(
model="grok-4.6",
messages=[{"role": "user", "content": "hi"}],
tools=tools,
is_xai_responses=True,
)
names = self._names(kw)
assert names == ["hermes_tool_search", "hermes_tool_search_2"]
assert len(names) == len(set(names))
assert transport._last_wire_aliases == {"hermes_tool_search_2": "tool_search"}
# Bridge alias maps back; the real tool's name is untouched.
normalized = self._normalize_named_call(
transport, monkeypatch, "hermes_tool_search_2"
)
assert [tc.name for tc in normalized.tool_calls] == ["tool_search"]
normalized2 = self._normalize_named_call(
transport, monkeypatch, "hermes_tool_search"
)
assert [tc.name for tc in normalized2.tool_calls] == ["hermes_tool_search"]
def test_legacy_fallback_without_provenance(self, transport, monkeypatch):
"""Normalize-only call sites (no build_kwargs on this instance) keep
the historical unconditional reverse mapping."""
assert transport._last_wire_aliases is None
normalized = self._normalize_named_call(
transport, monkeypatch, "hermes_tool_search"
)
assert [tc.name for tc in normalized.tool_calls] == ["tool_search"]
class TestXaiWebSearchBackendPreference:
"""``_xai_prefers_native_web_search`` must honor web backend config."""
def test_explicit_firecrawl_prefers_client(self, monkeypatch):
import agent.transports.codex as codex_mod
monkeypatch.setattr(
"agent.web_search_registry.get_active_search_provider",
lambda: SimpleNamespace(name="firecrawl"),
)
assert codex_mod._xai_prefers_native_web_search() is False
def test_explicit_search_backend_xai_prefers_native(self, monkeypatch):
import agent.transports.codex as codex_mod
monkeypatch.setattr(
"agent.web_search_registry.get_active_search_provider",
lambda: SimpleNamespace(name="xai"),
)
assert codex_mod._xai_prefers_native_web_search() is True
def test_resolved_non_xai_provider_prefers_client(self, monkeypatch):
import agent.transports.codex as codex_mod
monkeypatch.setattr(
"agent.web_search_registry.get_active_search_provider",
lambda: SimpleNamespace(name="firecrawl"),
)
assert codex_mod._xai_prefers_native_web_search() is False
def test_no_provider_legacy_fallback_xai(self, monkeypatch):
"""When no provider is registered, fall back to _get_search_backend."""
import agent.transports.codex as codex_mod
monkeypatch.setattr(
"agent.web_search_registry.get_active_search_provider",
lambda: None,
)
monkeypatch.setattr(
"tools.web_tools._get_search_backend",
lambda: "xai",
)
assert codex_mod._xai_prefers_native_web_search() is True
def test_no_provider_legacy_fallback_non_xai(self, monkeypatch):
"""When no provider is registered and backend isn't xai, keep client."""
import agent.transports.codex as codex_mod
monkeypatch.setattr(
"agent.web_search_registry.get_active_search_provider",
lambda: None,
)
monkeypatch.setattr(
"tools.web_tools._get_search_backend",
lambda: "firecrawl",
)
assert codex_mod._xai_prefers_native_web_search() is False
class TestCodexValidateResponse:
def test_none_response(self, transport):
assert transport.validate_response(None) is False
def test_valid_output(self, transport):
r = SimpleNamespace(output=[{"type": "message", "content": []}])
assert transport.validate_response(r) is True
@pytest.mark.parametrize("reason", ["max_output_tokens", "length", "", None])
def test_empty_output_other_incomplete_reasons_remain_invalid(self, transport, reason):
r = SimpleNamespace(
status="incomplete",
incomplete_details=SimpleNamespace(reason=reason),
output=[],
output_text="",
)
assert transport.validate_response(r) is False
class TestCodexMapFinishReason:
def test_completed(self, transport):
assert transport.map_finish_reason("completed") == "stop"
class TestCodexNormalizeResponse:
def test_text_response(self, transport):
"""Normalize a simple text Codex response."""
r = SimpleNamespace(
output=[
SimpleNamespace(
type="message",
role="assistant",
content=[SimpleNamespace(type="output_text", text="Hello world")],
status="completed",
),
],
status="completed",
incomplete_details=None,
usage=SimpleNamespace(input_tokens=10, output_tokens=5,
input_tokens_details=None, output_tokens_details=None),
)
nr = transport.normalize_response(r)
assert isinstance(nr, NormalizedResponse)
assert nr.content == "Hello world"
assert nr.finish_reason == "stop"
def test_message_items_preserved_in_provider_data(self, transport):
"""Codex assistant message item ids/phases must survive transport normalization."""
r = SimpleNamespace(
output=[
SimpleNamespace(
type="message",
role="assistant",
id="msg_abc",
phase="final_answer",
content=[SimpleNamespace(type="output_text", text="Hello world")],
status="completed",
),
],
status="completed",
incomplete_details=None,
usage=SimpleNamespace(input_tokens=10, output_tokens=5,
input_tokens_details=None, output_tokens_details=None),
)
nr = transport.normalize_response(r)
assert nr.codex_message_items == [
{
"type": "message",
"role": "assistant",
"status": "completed",
"content": [{"type": "output_text", "text": "Hello world"}],
"id": "msg_abc",
"phase": "final_answer",
}
]
def test_tool_call_response(self, transport):
"""Normalize a Codex response with tool calls."""
r = SimpleNamespace(
output=[
SimpleNamespace(
type="function_call",
call_id="call_abc123",
name="terminal",
arguments=json.dumps({"command": "ls"}),
id="fc_abc123",
status="completed",
),
],
status="completed",
incomplete_details=None,
usage=SimpleNamespace(input_tokens=10, output_tokens=20,
input_tokens_details=None, output_tokens_details=None),
)
nr = transport.normalize_response(r)
assert nr.finish_reason == "tool_calls"
assert len(nr.tool_calls) == 1
tc = nr.tool_calls[0]
assert tc.name == "terminal"
assert '"command"' in tc.arguments
class TestCodexTransportTimeout:
"""Forward per-request timeout from build_kwargs to the SDK kwargs."""
def test_positive_timeout_preserved(self, transport):
kw = transport.build_kwargs(
model="gpt-5.5",
messages=[{"role": "user", "content": "hi"}],
tools=[],
timeout=600.0,
)
assert kw.get("timeout") == 600.0
def test_inf_timeout_dropped(self, transport):
kw = transport.build_kwargs(
model="gpt-5.5",
messages=[{"role": "user", "content": "hi"}],
tools=[],
timeout=float("inf"),
)
assert "timeout" not in kw
class TestCodexTransportXaiReasoningEffort:
@pytest.fixture
def transport(self):
from agent.transports.codex import ResponsesApiTransport
return ResponsesApiTransport()
def test_grok_46_preserves_xhigh(self, transport):
kw = transport.build_kwargs(
model="grok-4.6",
messages=[{"role": "user", "content": "hi"}],
tools=[],
is_xai_responses=True,
reasoning_config={"effort": "xhigh"},
)
assert kw["reasoning"]["effort"] == "xhigh"
@pytest.mark.parametrize("effort", ["max", "ultra"])
def test_grok_46_clamps_hermes_aliases_to_model_ceiling(self, transport, effort):
"""Hermes ladder aliases mean "this model's ceiling" — on grok-4.6
that is xhigh, not one rung below it (#87279)."""
kw = transport.build_kwargs(
model="x-ai/grok-4.6-latest",
messages=[{"role": "user", "content": "hi"}],
tools=[],
is_xai_responses=True,
reasoning_config={"effort": effort},
)
assert kw["reasoning"]["effort"] == "xhigh"
@pytest.mark.parametrize("effort", ["max", "ultra"])
def test_older_grok_clamps_aliases_to_high(self, transport, effort):
"""Older Grok tops out at high; above-ceiling aliases land there."""
kw = transport.build_kwargs(
model="grok-4.5",
messages=[{"role": "user", "content": "hi"}],
tools=[],
is_xai_responses=True,
reasoning_config={"effort": effort},
)
assert kw["reasoning"]["effort"] == "high"
def test_older_grok_clamps_xhigh_to_high(self, transport):
kw = transport.build_kwargs(
model="grok-4.5",
messages=[{"role": "user", "content": "hi"}],
tools=[],
is_xai_responses=True,
reasoning_config={"effort": "xhigh"},
)
assert kw["reasoning"]["effort"] == "high"
class TestCodexTransportXaiServiceTierStrip:
"""xAI Responses API rejects ``service_tier`` (#28490).
``resolve_fast_mode_overrides`` only returns ``service_tier`` for
OpenAI fast-eligible models, so on paper the field should never
reach a Grok request. But ``self.service_tier`` lingers across
model switches and can also be set directly via ``agent.service_tier``
in config.yaml — both leak paths plumb through ``request_overrides``
and would 400 against xAI's ``/v1/responses``.
Strip defensively when targeting xAI.
"""
@pytest.fixture
def transport(self):
from agent.transports.codex import ResponsesApiTransport
return ResponsesApiTransport()
def test_xai_strips_service_tier_from_request_overrides(self, transport):
"""Headline #28490 case: service_tier=priority leaks through
request_overrides, must not reach the xAI request body."""
kw = transport.build_kwargs(
model="grok-4.3",
messages=[{"role": "user", "content": "hi"}],
tools=[],
is_xai_responses=True,
request_overrides={"service_tier": "priority"},
)
assert "service_tier" not in kw, (
f"service_tier must be stripped on xAI requests, "
f"got {kw.get('service_tier')!r}"
)
def test_grok_46_preserves_priority_service_tier(self, transport):
kw = transport.build_kwargs(
model="x-ai/grok-4.6-latest",
messages=[{"role": "user", "content": "hi"}],
tools=[],
is_xai_responses=True,
request_overrides={"service_tier": "priority"},
)
assert kw.get("service_tier") == "priority"
def test_grok_46_strips_non_priority_service_tier(self, transport):
kw = transport.build_kwargs(
model="grok-4.6",
messages=[{"role": "user", "content": "hi"}],
tools=[],
is_xai_responses=True,
request_overrides={"service_tier": "unsupported"},
)
assert "service_tier" not in kw
def test_non_xai_codex_preserves_service_tier(self, transport):
"""The strip is xAI-only — native Codex DOES accept
service_tier=priority (OpenAI Priority Processing). Stripping
it elsewhere would silently disable the user's fast-mode opt-in.
"""
kw = transport.build_kwargs(
model="gpt-5.5",
messages=[{"role": "user", "content": "hi"}],
tools=[],
is_xai_responses=False,
is_codex_backend=True,
request_overrides={"service_tier": "priority"},
)
assert kw.get("service_tier") == "priority", (
"non-xAI codex_responses providers must keep service_tier"
)
def test_github_responses_preserves_service_tier(self, transport):
"""GitHub Models (Copilot) is another codex_responses surface
that should not be affected by the xAI strip."""
kw = transport.build_kwargs(
model="gpt-5.5",
messages=[{"role": "user", "content": "hi"}],
tools=[],
is_github_responses=True,
request_overrides={"service_tier": "priority"},
)
assert kw.get("service_tier") == "priority"
class TestPreflightSlashEnumStrip:
"""xAI Responses safety-net: strip slash-containing enum values
when the model name indicates a Grok target (#28490).
Native Codex accepts ``/``-containing enums; xAI rejects them with
HTTP 400 "Invalid arguments passed to the model". The main agent
loop and the auxiliary client already sanitize at request-build
time; this preflight catches any future code path that bypasses
those — gated on model name so we don't unnecessarily strip on
non-xAI providers.
"""
def _make_kwargs(self, model: str, enum_values: list[str]) -> dict:
return {
"model": model,
"instructions": "test",
"input": [{"role": "user", "content": "hi"}],
"tools": [
{
"type": "function",
"name": "pick_model",
"description": "pick a model",
"parameters": {
"type": "object",
"properties": {
"model_id": {
"type": "string",
"enum": enum_values,
},
},
},
},
],
}
def test_grok_model_strips_slash_enum_values(self):
"""When the model name is Grok-family, slash-containing enum
values are stripped so xAI doesn't 400 on the tool schema."""
from agent.codex_responses_adapter import _preflight_codex_api_kwargs
kwargs = self._make_kwargs(
"grok-4.3",
["Qwen/Qwen3.5-0.8B", "openai/gpt-oss-20b", "plain-id"],
)
result = _preflight_codex_api_kwargs(kwargs)
# The enum keyword itself is stripped (per strip_slash_enum's
# semantics — it removes the constraint entirely when any value
# contains /).
params = result["tools"][0]["parameters"]
assert "enum" not in params["properties"]["model_id"], (
"slash-containing enum must be stripped on Grok"
)
def test_aggregator_prefixed_grok_also_strips(self):
"""Aggregator-prefixed (x-ai/grok-*) names hit the same path."""
from agent.codex_responses_adapter import _preflight_codex_api_kwargs
kwargs = self._make_kwargs(
"x-ai/grok-4.3",
["Qwen/Qwen3.5-0.8B"],
)
result = _preflight_codex_api_kwargs(kwargs)
assert "enum" not in result["tools"][0]["parameters"]["properties"]["model_id"]
def test_non_grok_model_preserves_slash_enum_values(self):
"""Native Codex / GitHub Models DO accept slash-containing
enums. The safety-net must NOT strip there or we silently
degrade tool-schema constraints on every codex_responses
provider that isn't xAI."""
from agent.codex_responses_adapter import _preflight_codex_api_kwargs
kwargs = self._make_kwargs(
"gpt-5.5",
["Qwen/Qwen3.5-0.8B", "plain-id"],
)
result = _preflight_codex_api_kwargs(kwargs)
params = result["tools"][0]["parameters"]
# The enum must survive on non-xAI providers.
assert params["properties"]["model_id"].get("enum") == [
"Qwen/Qwen3.5-0.8B", "plain-id"
]