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Title: Python: Model complementary MCP AST handler parameters as ai sources by Tito0015 · Pull Request #22750 · github/codeql · GitHub

Open Graph Title: Python: Model complementary MCP AST handler parameters as ai sources by Tito0015 · Pull Request #22750 · github/codeql

X Title: Python: Model complementary MCP AST handler parameters as ai sources by Tito0015 · Pull Request #22750 · github/codeql

Description: Summary This PR provides complementary native QL AST modeling for Python MCP and fastmcp handlers that still fall outside the API-graph baseline in Mcp.qll after #22703. Context & Positioning Following #22822 (legacy queries accept ActiveThreatModelSource), #22703 (now merged) models standard MCP/fastmcp handler parameters and transport sources via QL + MaD. This PR adds the remaining programmatic edge cases only, deduplicated with not isClientParameter(...). Handlers that MaD / the baseline still miss include: Stacked custom project decorators (e.g. @custom_telemetry above @mcp.tool()), via getADecorator(). Nested instance registrations (e.g. @self.mcp.tool()). @staticmethod MCP tools where the first parameter must not be treated as self. The complementary class McpHandlerParameter extends ThreatModelSource::Range with threat-model kind ai and source type MCP server handler parameter (baseline uses MCP handler parameter). Context parameters are excluded using the upstream isContextAnnotation() logic. Testing Merged upstream/main. Local test python/ql/test/library-tests/dataflow/remote-flow-sources/ passes (complementary sources only).

Open Graph Description: Summary This PR provides complementary native QL AST modeling for Python MCP and fastmcp handlers that still fall outside the API-graph baseline in Mcp.qll after #22703. Context & Positioning F...

X Description: Summary This PR provides complementary native QL AST modeling for Python MCP and fastmcp handlers that still fall outside the API-graph baseline in Mcp.qll after #22703. Context & Positioni...

Opengraph URL: https://github.com/github/codeql/pull/22750

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5e30bf2 Python: model MCP and FastMCP server handler parameters as remote flo… Tito0015 Oct 4, 2026 https://github.com/github/codeql/pull/22750/commits/5e30bf27732527f4e13e37c4a0a0b4ba3bc8e475
d0a798c Python: restrict MCP remote sources to stacked and instance handlers Tito0015 Oct 15, 2026 https://github.com/github/codeql/pull/22750/commits/d0a798cf100de1a9bf765dd7f477f78734514e76
40805f5 Merge upstream/main into feature/python-mcp-remote-sources Tito0015 Nov 2, 2026 https://github.com/github/codeql/pull/22750/commits/40805f51fe03644c3b0c8e0b5ffab8c208ee1ee3
99cdc47 Python: model MCP handler params as ai threat-model sources Tito0015 Nov 4, 2026 https://github.com/github/codeql/pull/22750/commits/99cdc47cbd1b2514805a6df32adc7c9b382b4c85
9caec6c Merge upstream/main into feature/python-mcp-remote-sources Tito0015 Nov 4, 2026 https://github.com/github/codeql/pull/22750/commits/9caec6cc5f6d54611eea35b4110b37efd438b866
13f146e Merge upstream/main and align complementary MCP AST models Tito0015 Nov 14, 2026 https://github.com/github/codeql/pull/22750/commits/13f146e70913fe45729c41cb5795ebc2a471eb8f
208033b Merge upstream/main into feature/python-mcp-remote-sources Tito0015 Nov 14, 2026 https://github.com/github/codeql/pull/22750/commits/208033b584d6c4fe7022dcd00353654651e9adea
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