ar-mcp

The AnchorRegistry MCP server. Resolve any AR-ID, manifest hash, or provenance tree from any MCP-compatible AI client. Authless, read-only, free.

Install

Claude Desktop — Settings → Integrations → Add server, URL: https://mcp.anchorregistry.ai/mcp

Claude Code

claude mcp add --transport http anchorregistry https://mcp.anchorregistry.ai/mcp

Cursor — Settings → MCP → Add new MCP server, type http, URL https://mcp.anchorregistry.ai/mcp

Tools (v0.1)

• ar_verify_arid — resolve an AR-ID to its full provenance record
• ar_verify_by_hash — resolve an artifact by SHA-256 manifest hash
• ar_resolve_tree — full provenance tree for any AR-ID

How it works

ar-mcp is a thin proxy. Every tool call hits api.anchorregistry.ai and returns the JSON unchanged. No data is logged, no credentials are stored, no state is held between requests.

See also

• anchorregistry.com — main site
• llms.txt · agents.json
• OpenAPI spec · Swagger UI
• Source · Python SDK