Orca MCP Server

The Orca MCP Server provides tools for generating, verifying, and compiling finite state machines from natural language specifications. It supports LLM-native code generation targets and allows agents to create verified state machines, multi-machine systems, and decision tables without direct shell or file access.

Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

Community listingLocal stdioSource reviewed; not executedPublished by jascal

You need:ORCA_API_KEY Yes API key for your LLM provider

Vendor documentation

What you can do with it

Generate a verified machine from a natural language spec
Verify a machine for errors and warnings
Compile state machines to XState TypeScript or Mermaid
Generate action scaffold stubs for TypeScript, Python, or Go

Source and maintenance

Community listingRegistry 0.1.30

mcp-registry: io.github.jascal/orca-mcp-server@0.1.30 Source repository

Maintenance checked: Oct 31, 2026, 10:27 PM UTC

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

@orcalang/orca-mcp-server 0.1.30

npmnpx

@orcalang/orca-mcp-server package definition

{
  "version": "0.1.30",
  "transport": "stdio",
  "identifier": "@orcalang/orca-mcp-server",
  "runtimeHint": "npx",
  "registryType": "npm",
  "environmentVariables": [
    {
      "name": "ANTHROPIC_API_KEY",
      "description": "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."
    },
    {
      "name": "ORCA_PROVIDER",
      "default": "anthropic",
      "description": "LLM provider to use: anthropic (default), openai, grok, or ollama."
    },
    {
      "name": "ORCA_MODEL",
      "description": "Model name to use for LLM tools. Defaults to claude-sonnet-4-6 for Anthropic."
    }
  ]
}

Tools

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No tool definitions available.

Connect from your client

Each snippet configures the same source-provided package; replace placeholders before use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.

Cursor configuration

{
  "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": "<YOUR_ORCA_PROVIDER>",
        "ORCA_MODEL": "<YOUR_ORCA_MODEL>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.

Cline configuration

{
  "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": "<YOUR_ORCA_PROVIDER>",
        "ORCA_MODEL": "<YOUR_ORCA_MODEL>"
      }
    }
  }
}

VS Code

Merge this local stdio configuration, replace every placeholder environment value, and restart VS Code. Koskamo has not executed this package.

VS Code configuration

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

Claude Desktop

Merge this local stdio configuration, replace every placeholder environment value, and restart Claude Desktop. Koskamo has not executed this package.

Claude Desktop configuration

{
  "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": "<YOUR_ORCA_PROVIDER>",
        "ORCA_MODEL": "<YOUR_ORCA_MODEL>"
      }
    }
  }
}

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