Fix Fireworks LLM integration tool validation errors

[exedev-shelley]

Author: tsfreddie
Channel: #feedback
Link: https://discord.com/channels/1405685085923049482/1405686161791516873/1528086535268728904

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Issue

LLM requests to Fireworks models are failing with a 400 Bad Request error after a Shelley update. The error indicates tool validation failures:

LLM request failed: attempt 1 at 2026-07-18 17:08:31: status 400 Bad Request
(url=https://llm.int.exe.xyz/v1/messages, model=accounts/fireworks/models/minimax-m3)

Error: 2 request validation errors:
- Input should be 'function', 'web_search_preview' or 'code_interpreter', field: 'tools[8].type', value: 'web_search_20250305'
- Extra inputs are not permitted, field: 'tools[8].name', value: 'web_search'

(shelley_request_id=6eaaba7ba5661a7a upstream_request_id=c8c8a3d6-959e-40ca-9fb6-6851432dc6e2)

Details

• Affected models: Fireworks models (reported: minimax-m3)
• Root cause: Tools being sent with invalid type web_search_20250305 and unexpected name field
• Expected behavior: Tools should only use valid types: function, web_search_preview, or code_interpreter
• Regression: Issue appeared after Shelley update; previously working

Action Items

1. Verify which Shelley update introduced this regression
2. Update tool validation/transformation logic to comply with Fireworks API requirements
3. Test with all supported Fireworks models
4. Ensure backward compatibility if possible