Ollama tool call arguments serialized as string instead of object — breaks tool loop
증상
When an Ollama model returns a tool call, OpenClaw stores arguments as a JSON string (OpenAI format). When this assistant message is later sent back to Ollama as conversation context, extractToolCalls() passes arguments as-is (string). Ollama expects an object and fails with "Value looks like object, but can't find closing '}' symbol".
원인
Tool or plugin call failed due to schema mismatch, missing parameter, permission error, or upstream API change. 카테고리: tool-failure.
해결법
In extractToolCalls(), deserialize string arguments before passing to Ollama:
const ensureObj = (v) => { if (typeof v === "string") try { return JSON.parse(v); } catch {} return v ?? {}; };
예상 토큰 절약
이 에러로 삽질 시: 약 5,000~15,000 토큰 소비 이 해결법 참조 시: 약 500 토큰
출처
https://github.com/openclaw/openclaw/issues/50689
Source: https://github.com/openclaw/openclaw/issues/50689
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