ordinals-mcp

The most complete Bitcoin Ordinals MCP server. 24 tools covering inscriptions, runes, BRC-20 tokens, collections, rare sats, and marketplace data. Aggregates Hiro, Ordiscan, and Magic Eden APIs with intelligent caching and automatic failover.

The only alternative (ordiscan-mcp) has 25 npm downloads and covers a fraction of the surface. This server is the production-grade option.

Install

npx ordinals-mcp@latest

Or install globally:

npm install -g ordinals-mcp
ordinals-mcp

Configure

Add to your MCP config (claude_desktop_config.json or ~/.mcp.json):

{
  "mcpServers": {
    "ordinals": {
      "command": "npx",
      "args": ["-y", "ordinals-mcp@latest"],
      "env": {
        "HIRO_API_KEY": "your-key",
        "ORDISCAN_API_KEY": "your-key"
      }
    }
  }
}

At least one of HIRO_API_KEY or ORDISCAN_API_KEY is required. Both are free:

Tools (24)

Inscriptions (5)

Address Queries (4)

Runes (6)

BRC-20 (3)

Collections (3)

Sats & Transactions (3)

Why This One?

• 24 tools, full coverage. Inscriptions, runes, BRC-20, collections, rare sats, and marketplace data. No other Ordinals MCP covers all six categories.
• Multi-API with automatic failover. Aggregates Hiro (primary, 500 RPM), Ordiscan (fallback), and Magic Eden (marketplace). If one API rate-limits, requests automatically route to the next.
• Intelligent caching. TTLs tuned per data type -- sat rarity (24h), inscription metadata (5m), collection info (2m), balances (1m), marketplace listings (30s). Stale cache serves as last resort during outages.

Architecture

Request --> Cache (TTL + ETag)
  |--> HIT: return cached
  |--> MISS:
      |--> Hiro (primary, 500 RPM)
      |     |--> Success: cache + return
      |     |--> Rate limited: Ordiscan (fallback) --> Stale cache (last resort)
      |--> Magic Eden (marketplace-specific)

Environment Variables

*At least one required.

Development

git clone https://github.com/ExpertVagabond/ordinals-mcp.git
cd ordinals-mcp
npm install
npm run build
npm run inspector    # MCP Inspector for testing

License

MIT -- Purple Squirrel Media