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fix(agent): validate context/memory tool schemas before wrapping

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Closes #47707

Context engines and memory providers expose tool schemas via
get_tool_schemas(). agent_init.py wrapped each as
{"type":"function","function":_schema} without validating that
_schema carries a top-level name. A provider returning an entry already
in OpenAI tool form ({"type":"function","function":{...}}) was then
double-wrapped into a tool whose function has no name. Strict providers
(e.g. DeepSeek) reject the entire request with HTTP 400
'tools[N].function: missing field name', so one malformed schema
silently disables the whole toolset and breaks every turn. The schema
was also never added to valid_tool_names, so even lenient providers
could not call it.

Add a shared normalize_tool_schema() helper that unwraps an
already-wrapped entry and returns None for anything lacking a resolvable
string name. Wire it into the agent_init context-engine loop and all
three memory_manager surfaces (inject_memory_provider_tools,
add_provider routing index, get_all_tool_schemas), so a single bad
plugin schema is skipped with a warning instead of poisoning the
request.

Verification: 209 targeted agent/memory tests pass (incl. 9 new).
New tests assert the unwrap + skip-nameless behavior and fail without
the fix.
This commit is contained in:
Bartok9 2026-06-17 03:38:07 -04:00 • committed by kshitijk4poor
parent 77d2b50751
commit 710cd48fb1
3 changed files with 177 additions and 16 deletions
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25
agent/agent_init.py
View file

@ -1621,16 +1621,27 @@ def init_agent(
for t in agent.tools
if isinstance(t, dict)
}
for _schema in agent.context_compressor.get_tool_schemas():
_tname = _schema.get("name", "")
if _tname and _tname in _existing_tool_names:
from agent.memory_manager import normalize_tool_schema as _normalize_tool_schema
for _raw_schema in agent.context_compressor.get_tool_schemas():
_schema = _normalize_tool_schema(_raw_schema)
if _schema is None:
# A schema with no resolvable name (e.g. an already-wrapped
# entry) would append a nameless tool that strict providers
# 400 on, disabling the whole toolset (#47707). Skip it.
_ra().logger.warning(
"Context engine returned a tool schema with no resolvable "
"name; skipping to avoid poisoning the request (%r)",
_raw_schema,
)
continue
_tname = _schema["name"]
if _tname in _existing_tool_names:
continue # already registered via plugin/cache path
_wrapped = {"type": "function", "function": _schema}
agent.tools.append(_wrapped)
if _tname:
agent.valid_tool_names.add(_tname)
agent._context_engine_tool_names.add(_tname)
_existing_tool_names.add(_tname)
agent.valid_tool_names.add(_tname)
agent._context_engine_tool_names.add(_tname)
_existing_tool_names.add(_tname)
# Notify context engine of session start
if hasattr(agent, "context_compressor") and agent.context_compressor: