Execution Templates

Execution templates control how s2s stage engineering_exec spawns an AI agent in a worktree to implement code changes.

Note on pipeline mode: In the default chat-native pipeline mode, artifact-producing stages (pm, research, design, engineering) do not use execution templates — they output a task package for the active chat session. Execution templates only apply when s2s stage engineering_exec runs (which spawns a subprocess in a worktree) or when pipelineMode: 'standalone' is set. See LLM Access Modes for standalone configuration.

Execution templates are defined in:

• config/execution.templates.json

Runtime selector is defined in:

• config/runtime.json -> execution.templateId

Recommended strict templates

Codex strict

{
  "execution": {
    "mode": "shell",
    "templateId": "codex_strict",
    "timeoutMs": 1200000,
    "allowedCommands": ["codex", "claude", "opencode", "just", "pnpm", "node", "git"],
    "allowUnsafeRawCommand": false
  }
}

Claude strict

{
  "execution": {
    "mode": "shell",
    "templateId": "claude_strict",
    "timeoutMs": 1800000,
    "allowedCommands": ["codex", "claude", "opencode", "just", "pnpm", "node", "git"],
    "allowUnsafeRawCommand": false
  }
}

OpenCode strict

{
  "execution": {
    "mode": "shell",
    "templateId": "opencode_strict",
    "timeoutMs": 1800000,
    "allowedCommands": ["codex", "claude", "opencode", "just", "pnpm", "node", "git"],
    "allowUnsafeRawCommand": false
  }
}

OpenCode configuration

opencode_* templates are runtime-ready and configurable. If your local OpenCode CLI uses different flags, update:

• command
• args

inside config/execution.templates.json for opencode_strict / opencode_fast.

Branch naming

Engineering delivery branches use:

• s2s-<provider>/<change-id>

Examples:

• s2s-codex/auth-refactor
• s2s-claude/checkout-ui
• s2s-opencode/fix-build

Safety checklist

1. Keep allowUnsafeRawCommand set to false.
2. Keep allowedCommands minimal.
3. Use strict templates in production.
4. Keep timeoutMs bounded per task.