Pain point · API & developer experience · Blocks work
MCP query tools reject valid portable foreign-key queries
1 source thread · first seen 2026-09
Summary
The MCP construct_query and query tools reject requests containing a valid portable source-table reference, including the documented Sample Database example. The failure occurs before query processing or SQL execution.
- Affects
- MCP client users
Evidence
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“The MCP `construct_query` and `query` tools reject every request with:”