fix(anthropic): omit tool-streaming beta on MiniMax endpoints#6861
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MiniMax's Anthropic-compatible endpoints reject requests that include the fine-grained-tool-streaming beta header — every tool-use message triggers a connection error (~18s timeout). Regular chat works fine. Add _common_betas_for_base_url() that filters out the tool-streaming beta for Bearer-auth (MiniMax) endpoints while keeping all other betas. All four client-construction branches now use the filtered list. Based on #6528 by @HiddenPuppy. Original cherry-picked from PR #6688 by kshitijk4poor. Fixes #6510, fixes #6555.
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Summary
Salvage of #6688 by @kshitijk4poor (based on #6528 by @HiddenPuppy). Fixes #6510, #6555.
Problem
MiniMax's Anthropic-compatible endpoints (
api.minimax.io/anthropic,api.minimaxi.com/anthropic) reject thefine-grained-tool-streaming-2025-05-14beta header. Regular chat works fine, but any tool-use request triggers an ~18s timeout connection error.Fix
Adds
_common_betas_for_base_url()that filters out the tool-streaming beta for Bearer-auth (MiniMax) endpoints. All four client-construction branches inbuild_anthropic_client()now use the filtered list. Other betas (interleaved-thinking) are kept — MiniMax ignores unrecognized betas harmlessly.Tests
140/140 tests pass across
test_anthropic_adapter.py+test_minimax_provider.py, including 12 new tests covering both MiniMax domains, trailing slashes, non-MiniMax keeps full betas, and direct_common_betas_for_base_url()unit tests.