# X_MCP_JOB_TOOL_INVALID

## Means

jobTool() was declared with something it cannot run

## Typical cause

the job is not job()'s handle, the jobs driver has no introspect, or inlineMs is outside 0..25000

## Fix

`jobTool({ job: myJob, policy, result, inlineMs: 5_000 }) — on the postgres or memory jobs driver`

[MCP and AI](/error-codes#mcp-and-ai)