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[hotfix][mcp][python] Check whether mcp server supports prompts via server capabilities #551

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[hotfix][mcp][python] Check whether mcp server supports prompts via server capabilities #551

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[python][mcp] Check whether mcp server supports prompts via server ca…
xintongsong Feb 24, 2026
48bf735
fixup! [python][mcp] Check whether mcp server supports prompts via se…
xintongsong Feb 24, 2026
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14 changes: 7 additions & 7 deletions python/flink_agents/integrations/mcp/mcp.py
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Original file line number Diff line number Diff line change
Expand Up @@ -27,7 +27,6 @@
import httpx
from mcp.client.session import ClientSession
from mcp.client.streamable_http import streamablehttp_client
from mcp.shared.exceptions import McpError
from mcp.types import PromptArgument, TextContent
from pydantic import (
ConfigDict,
Expand Down Expand Up @@ -272,16 +271,17 @@ def get_tool_metadata(self, name: str) -> ToolMetadata:

def list_prompts(self) -> List[MCPPrompt]:
"""List available prompts from the MCP server."""
try:
return asyncio.run(self._list_prompts_async())
except McpError as e:
if "prompts not supported" in str(e).lower():
return []
raise
return asyncio.run(self._list_prompts_async())

async def _list_prompts_async(self) -> List[MCPPrompt]:
"""Async implementation of list_prompts."""
async with self._get_session() as session:
# Check if the server supports prompts capability
capabilities = session.get_server_capabilities()
if capabilities is None or capabilities.prompts is None:
# Server does not support prompts
return []

prompts_response = await session.list_prompts()

prompts = []
Expand Down