[bug] Tool call Error: unknown tool ""

[gaboolic]

[lanjie8]

I reproduced this issue with deepseek-v4-flash through an OpenAI-compatible endpoint and confirmed the wire-level cause.

The first streamed tool_calls delta contains a valid identity, for example:

{"index":0,"id":"call_...","function":{"name":"bash","arguments":""}}

Continuation deltas then repeat id: "" and name: "" while appending argument fragments. dsh-llm-deepseek currently replaces callId and name whenever those fields are defined, so the empty continuation placeholders erase the valid values from the first delta. The assembled assistant/message and tool/call consequently contain an empty tool name, and dispatch fails with UNKNOWN_TOOL.

This also explains the follow-on session corruption: a persisted tool/result with an empty source callId is rejected by session validation when the history is loaded again.

I prepared a minimal fix that retains the last non-empty tool-call id and function name, while preserving the existing fallback when a stream never supplies either field:

lanjie8@1e635ed

Verification completed:

• dsh-llm-deepseek: 152 tests passed, including a regression fixture for non-empty first delta + empty continuation delta.
• Repository lint, typecheck, full build, and all 28 documentation gates passed.
• A real headless request produced name: "bash", a non-empty callId, isError: false, and a completed turn.

The fork commit is ready to cherry-pick if useful.

[gaboolic]

Thank you, If it's because of this issue, then simply avoid using the "compatible with OpenAI" interface.

[gaboolic]

图方便直接把官方的地址改成了opencode go的地址，才出现这个问题。应该用opencode go的提供者就好了

[Laurel-rao]

pnpm dedupe 显示 Already up to date，实际根因是 DeepSeek-V4-Flash 后续流式分片返回 id: ""、name: null，DSH rc.7 将其覆盖到首个正确工具名，最终触发 unknown tool ""；修改 @deepseek-ai/dsh-llm-deepseek/lib/index.js 后重启 DSH 即可：

- if (call.id !== void 0) block.callId = call.id;
- if (call.function?.name !== void 0) block.name = call.function.name;
+ if (typeof call.id === "string" && call.id.length > 0) block.callId = call.id;
+ if (typeof call.function?.name === "string" && call.function.name.length > 0) block.name = call.function.name;

新会话调用 noema_recall 已成功；这是安装目录补丁，升级 DSH 后会被覆盖，建议官方将该判断合入源码。

codex 这样修复的

[winton979]

用这个方法行了。不知道为什么会那么多问题，是否是因为只有windows的问题

[pwh19920920]

用这个方法行了。不知道为什么会那么多问题，是否是因为只有windows的问题

mac也一样的

[tangxiaolu0405]

如果是使用opencode go的订阅，可以暂时使用其他的模型。