io.github.jascal/orca-mcp-server

Official

by jascal · TypeScript

Orca MCP Server

Go from natural language to verified finite state machines — topology bugs caught before code runs.

Convert natural language to verified finite state machines with topology validation.

Install

Configuration

Environment variables

ANTHROPIC_API_KEYsecret

Anthropic API key for LLM-powered tools (generate_machine, generate_multi_machine, refine_machine, generate_actions with use_llm). Not required for parse_machine, verify_machine, compile_machine, or server_status.

ORCA_PROVIDERdefault anthropic

LLM provider to use: anthropic (default), openai, grok, or ollama.

ORCA_MODEL

Model name to use for LLM tools. Defaults to claude-sonnet-4-6 for Anthropic.

claude_desktop_config.json

{
  "mcpServers": {
    "orca-mcp-server": {
      "command": "npx",
      "args": [
        "-y",
        "@orcalang/orca-mcp-server@0.1.30"
      ],
      "env": {
        "ANTHROPIC_API_KEY": "<YOUR_ANTHROPIC_API_KEY>",
        "ORCA_PROVIDER": "anthropic",
        "ORCA_MODEL": "<YOUR_ORCA_MODEL>"
      }
    }
  }
}