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fix: MiniMax/Alibaba incorrectly detected as Anthropic OAuth, causing mcp_ tool prefix (#7509)

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_is_oauth_token() returned True for any key not starting with 'sk-ant-api',
which means MiniMax and Alibaba API keys were falsely treated as Anthropic
OAuth tokens. This triggered the Claude Code compatibility path:
- All tool names prefixed with mcp_ (e.g. mcp_terminal, mcp_web_search)
- System prompt injected with 'You are Claude Code' identity
- 'Hermes Agent' replaced with 'Claude Code' throughout

Fix: Make _is_oauth_token() positively identify Anthropic OAuth tokens by
their key format instead of using a broad catch-all:
- sk-ant-* (but not sk-ant-api-*) -> setup tokens, managed keys
- eyJ* -> JWTs from Anthropic OAuth flow
- Everything else -> False (MiniMax, Alibaba, etc.)

Reported by stefan171.
This commit is contained in:
Teknium 2026-04-11 00:43:01 -07:00 • committed by GitHub
parent e902e55b26
commit caf371da18
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3 changed files with 23 additions and 9 deletions
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run_agent.py
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@ -4425,7 +4425,7 @@ class AIAgent:
self._anthropic_api_key = runtime_key
self._anthropic_base_url = runtime_base
self._anthropic_client = build_anthropic_client(runtime_key, runtime_base)
self._is_anthropic_oauth = _is_oauth_token(runtime_key) if self.provider == "anthropic" else False
self._is_anthropic_oauth = _is_oauth_token(runtime_key)
self.api_key = runtime_key
self.base_url = runtime_base
return