harnesses.json

{
  "harnesses": {
    "claude-code": {
      "name": "Claude Code",
      "package": "@anthropic-ai/claude-code",
      "install": "npm install -g @anthropic-ai/claude-code",
      "command": "claude",
      "args": ["-p", "{prompt}", "--model", "{model}", "--permission-mode", "acceptEdits", "--max-turns", "{max_turns}", "--output-format", "json"],
      "env_key": "ANTHROPIC_API_KEY",
      "models": [
        "claude-opus-4-6",
        "claude-sonnet-4-6",
        "claude-sonnet-4-5",
        "claude-haiku-4-5"
      ]
    },
    "gemini-cli": {
      "name": "Gemini CLI",
      "package": "@anthropic-ai/gemini-cli",
      "install": "npm install -g @anthropic-ai/gemini-cli",
      "command": "gemini",
      "args": ["-p", "{prompt}", "--model", "{model}"],
      "env_key": "GEMINI_API_KEY",
      "models": [
        "gemini-2.0-flash-001",
        "gemini-2.5-flash",
        "gemini-2.5-pro",
        "gemini-3-flash-preview",
        "gemini-3.1-pro-preview"
      ]
    },
    "codex-cli": {
      "name": "Codex CLI",
      "package": "@openai/codex",
      "install": "npm install -g @openai/codex",
      "command": "codex",
      "args": ["-p", "{prompt}"],
      "env_key": "OPENAI_API_KEY",
      "models": [
        "gpt-4o",
        "gpt-4.1"
      ]
    }
  },
  "fallback": {
    "name": "runner.py",
    "description": "Simple API agent loop — bash/read/edit tools via docker exec",
    "env_key": "OPENROUTER_API_KEY"
  },
  "treatment": {
    "name": "ostk",
    "install": "curl -fsSL https://ostk.ai/install | OSTK_INSTALL_DIR=/usr/local/bin sh",
    "init": "ostk init --non-interactive",
    "boot": "ostk boot",
    "description": "Full ostk kernel — boot, heartbeat, dying, governance, audit"
  }
}