Attempting to use search tools results in bad error request 400

[danielrosehill]

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Dify version

Dify 0.15.2

Cloud or Self Hosted

Self Hosted (Docker)

Steps to reproduce

Create agent with access to a real time search tool (I tried Perplexity first, then Google).

✔️ Expected Behavior

Retrieves output augmented by data from real time / search API

❌ Actual Behavior

Got this error message:

This might also help with debugging; looks as if the tool gets called multiple times: