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fix(codex): drop extra_headers for chatgpt.com backend

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Tranquil-Flow 2026-06-13 06:40:51 -07:00 • committed by Teknium
parent 45f9099e51
commit 4fd9397ae3
2 changed files with 44 additions and 16 deletions
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20
agent/transports/codex.py
View file

@ -218,22 +218,10 @@ class ResponsesApiTransport(ProviderTransport):
kwargs.pop("timeout", None)
if is_codex_backend:
prompt_cache_key = kwargs.get("prompt_cache_key")
cache_scope_id = str(prompt_cache_key or session_id or "").strip()
if cache_scope_id:
existing_extra_headers = kwargs.get("extra_headers")
merged_extra_headers: Dict[str, str] = {}
if isinstance(existing_extra_headers, dict):
merged_extra_headers.update(
{
str(key): str(value)
for key, value in existing_extra_headers.items()
if key and value is not None
}
)
merged_extra_headers["session_id"] = cache_scope_id
merged_extra_headers["x-client-request-id"] = cache_scope_id
kwargs["extra_headers"] = merged_extra_headers
# chatgpt.com/backend-api/codex rejects body-level
# ``extra_headers`` with HTTP 400. Correlation/cache routing for
# this backend must not be sent through the Responses payload.
kwargs.pop("extra_headers", None)
max_tokens = params.get("max_tokens")
if max_tokens is not None and not is_codex_backend:

40
tests/agent/transports/test_codex_transport.py
View file

@ -155,6 +155,46 @@ class TestCodexBuildKwargs:
)
assert "max_output_tokens" not in kw
def test_codex_backend_does_not_set_extra_headers(self, transport):
messages = [{"role": "user", "content": "Hi"}]
kw = transport.build_kwargs(
model="gpt-5.4",
messages=messages,
tools=[],
session_id="conv-codex-1",
is_codex_backend=True,
)
assert "extra_headers" not in kw
def test_codex_backend_strips_caller_extra_headers(self, transport):
messages = [{"role": "user", "content": "Hi"}]
kw = transport.build_kwargs(
model="gpt-5.4",
messages=messages,
tools=[],
session_id="conv-codex-1",
is_codex_backend=True,
request_overrides={"extra_headers": {"x-test": "1"}},
)
assert "extra_headers" not in kw
def test_non_codex_responses_preserves_caller_extra_headers(self, transport):
messages = [{"role": "user", "content": "Hi"}]
kw = transport.build_kwargs(
model="gpt-5.4",
messages=messages,
tools=[],
is_codex_backend=False,
request_overrides={"extra_headers": {"x-test": "1"}},
)
assert kw["extra_headers"] == {"x-test": "1"}
def test_xai_headers(self, transport):
messages = [{"role": "user", "content": "Hi"}]
kw = transport.build_kwargs(