Symptom
The run ends with 'Received tool input did not match expected schema' and the user gets nothing.
Evidence what you'll see
- Happens on a share of runs when a tool parameter is marked required
Cause
The agent node treats a schema-invalid tool call as fatal instead of returning it to the model as an error it can fix.
Fix steps
0 of 3 done
Your check marks stay in this browser only.
Verify the fix worked
- Run the same question set: failed runs drop to zero or close to it.
Did this fix it?
Sources and credit
Summarized in our own words from these public reports. Credit goes to their authors.
Provided as is, without warranty. Test in a non-production environment and back up first. Security-related steps: verify against the official docs. Terms · Request removal or attribution change