[
  {
    "type": "function",
    "function": {
      "name": "list_files",
      "description": "List project files (optionally under a directory).",
      "parameters": {
        "type": "object",
        "properties": {
          "root": { "type": "string", "description": "Directory root, e.g. '.' or 'src'." },
          "glob": { "type": "string", "description": "Glob filter, e.g. '**/*.py'." },
          "max_results": { "type": "integer", "minimum": 1, "maximum": 500, "default": 200 }
        },
        "required": []
      }
    }
  },
  {
    "type": "function",
    "function": {
      "name": "read_file",
      "description": "Read a text file (optionally a line range).",
      "parameters": {
        "type": "object",
        "properties": {
          "path": { "type": "string" },
          "start_line": { "type": "integer", "minimum": 1, "description": "1-based inclusive." },
          "end_line": { "type": "integer", "minimum": 1, "description": "1-based inclusive." },
          "max_chars": { "type": "integer", "minimum": 200, "maximum": 200000, "default": 40000 }
        },
        "required": ["path"]
      }
    }
  },
  {
    "type": "function",
    "function": {
      "name": "search_in_repo",
      "description": "Search for a pattern across the repository.",
      "parameters": {
        "type": "object",
        "properties": {
          "query": { "type": "string", "description": "Literal or regex depending on implementation." },
          "glob": { "type": "string", "description": "Optional glob scope." },
          "case_sensitive": { "type": "boolean", "default": false },
          "max_results": { "type": "integer", "minimum": 1, "maximum": 500, "default": 50 }
        },
        "required": ["query"]
      }
    }
  },
  {
    "type": "function",
    "function": {
      "name": "get_env",
      "description": "Get environment info: OS, language versions, package manager, tool versions.",
      "parameters": { "type": "object", "properties": {}, "required": [] }
    }
  },
  {
    "type": "function",
    "function": {
      "name": "run",
      "description": "Run a command (lint/build/custom).",
      "parameters": {
        "type": "object",
        "properties": {
          "command": { "type": "string" },
          "cwd": { "type": "string", "default": "." },
          "timeout_sec": { "type": "integer", "minimum": 1, "maximum": 600, "default": 120 }
        },
        "required": ["command"]
      }
    }
  },
  {
    "type": "function",
    "function": {
      "name": "run_tests",
      "description": "Run the project's test suite with a command.",
      "parameters": {
        "type": "object",
        "properties": {
          "command": { "type": "string", "description": "e.g. 'pytest -q' or 'npm test'." },
          "cwd": { "type": "string", "default": "." },
          "timeout_sec": { "type": "integer", "minimum": 1, "maximum": 1800, "default": 600 }
        },
        "required": ["command"]
      }
    }
  },
  {
    "type": "function",
    "function": {
      "name": "get_logs",
      "description": "Get recent application logs / build logs / runtime logs.",
      "parameters": {
        "type": "object",
        "properties": {
          "source": { "type": "string", "description": "e.g. 'app', 'build', 'runtime'." },
          "last_n": { "type": "integer", "minimum": 1, "maximum": 5000, "default": 200 }
        },
        "required": ["source"]
      }
    }
  },
  {
    "type": "function",
    "function": {
      "name": "apply_patch",
      "description": "Apply a unified diff patch to the repository.",
      "parameters": {
        "type": "object",
        "properties": {
          "diff": { "type": "string", "description": "Unified diff" }
        },
        "required": ["diff"]
      }
    }
  }
]