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Add openai strict mode support for mcp #1437

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Add openai strict mode support for mcp #1437

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949c291
Add openai strict mode support for mcp
nzlzcat Apr 10, 2025
6826d8c
define strict in base class
nzlzcat Apr 10, 2025
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14 changes: 14 additions & 0 deletions pydantic_ai_slim/pydantic_ai/mcp.py
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Original file line number Diff line number Diff line change
Expand Up @@ -34,6 +34,7 @@ class MCPServer(ABC):
"""

is_running: bool = False
strict: bool | None = None

_client: ClientSession
_read_stream: MemoryObjectReceiveStream[JSONRPCMessage | Exception]
Expand Down Expand Up @@ -64,6 +65,7 @@ async def list_tools(self) -> list[ToolDefinition]:
name=tool.name,
description=tool.description or '',
parameters_json_schema=tool.inputSchema,
strict=self.strict,
)
for tool in tools.tools
]
Expand Down Expand Up @@ -150,6 +152,12 @@ async def main():
If you want to inherit the environment variables from the parent process, use `env=os.environ`.
"""

strict: bool | None = None
"""Whether to enforce (vendor-specific) strict JSON schema validation for tool calls.

See [`ToolDefinition`][pydantic_ai.tools.ToolDefinition] for more info.
"""

@asynccontextmanager
async def client_streams(
self,
Expand Down Expand Up @@ -220,6 +228,12 @@ async def main():
and may be closed. Defaults to 5 minutes (300 seconds).
"""

strict: bool | None = None
"""Whether to enforce (vendor-specific) strict JSON schema validation for tool calls.

See [`ToolDefinition`][pydantic_ai.tools.ToolDefinition] for more info.
"""

@asynccontextmanager
async def client_streams(
self,
Expand Down