Calling `use_skill` tool switches agent to default_agent unexpectedly

[fancydirty]

Description

Problem
When any agent calls the use_skill tool, it gets reset to the global model setting instead of keeping the agent's own configured model.

Evidence
Before use_skill:
▣ Orchestrator · claude-opus-4-5-thinking-high
After use_skill:
▣ Orchestrator · gemini-3-flash
Impact

• Agents lose their model configuration after loading skills
• Subagents spawned in parallel get stuck when their model changes mid-task
• Skills become unusable for agents with custom model configurations
  Expected Behavior
  use_skill should load the skill content without changing the agent's model. Each agent should retain its configured model throughout its lifecycle.

Plugins

oh-my-opencode, oh-my-opencode-slim

OpenCode version

1.1.25

Steps to reproduce

1. Configure global model: "google/gemini-3-flash" in opencode.json
2. Configure an agent with a different model:
   orchestrator: {
   model: anthropic/claude-opus-4-5
   }
3. Use that agent and call use_skill("some-skill")
4. Observed: Agent switches to global default model (gemini-3-flash)
5. Expected: Agent stays on its configured model (claude-opus-4-5)

Operating System

Ubuntu 22.04

Terminal

wsl

[github-actions]

This issue might be a duplicate of existing issues. Please check:

• Server API ignores agent's configured model when only agent parameter is passed #7099: Server API ignores agent's configured model when only agent parameter is passed
• Subagent with specific model results in model change in build and plan mode #6636: Subagent with specific model results in model change in build and plan mode
• Subtask commands do not inherit model #6928: Subtask commands do not inherit model

Feel free to ignore if none of these address your specific case.

[fancydirty]

修复方案

这个问题的根本原因是在 use_skill 工具调用 client.session.prompt() 时没有传递 agent 参数，导致 OpenCode 使用默认的 agent 配置。

问题代码

在 superpowers.js 的 use_skill 工具中：

await client.session.prompt({
  path: { id: context.sessionID },
  body: { noReply: true, parts: [{ type: 'text', text: skillContent, synthetic: true }] }
});

修复后代码

添加 agent: context.agent 参数来保留当前 agent 的配置：

await client.session.prompt({
  path: { id: context.sessionID },
  body: { agent: context.agent, noReply: true, parts: [{ type: 'text', text: skillContent, synthetic: true }] }
});

修改文件位置

文件路径: ~/.config/opencode/plugin/superpowers.js（或项目内的 .opencode/plugin/superpowers.js）

代码行: 约第 120 行附近

修复原理

context.agent 包含了当前会话的 agent 配置信息。当调用 session.prompt() 时传递这个参数，OpenCode 会使用当前的 agent 设置而不是全局默认配置。

验证步骤

1. 重启 OpenCode 使插件重新加载
2. 配置一个非默认模型的 agent
3. 调用 use_skill("some-skill")
4. 确认 agent 模型保持不变

相关参考

• 相同的修复已应用于 obra/superpowers 仓库的 PR Azure Model o4-mini error Invalid schema edit #290: fix use_skill agent context obra/superpowers#290

这个修复确保 use_skill 加载 skill 内容时不会改变 agent 的模型配置。