AnchorRegistry

io.github.AnchorRegistryv0.1.0Updated Sep 28, 2026

On-chain provenance lookup for AnchorRegistry. Resolve AR-IDs, hashes, and full trees. Authless.

VerifiedStreamable HTTPWeb executableOther

Installation

In SourceWeft

  1. Open AnchorRegistry in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "ar-mcp": {
      "type": "http",
      "url": "https://mcp.anchorregistry.ai/mcp"
    }
  }
}

README

ar-mcp

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

[License: MIT] [MCP] [Cloudflare Workers] [smithery badge] [arXiv]

Endpoint: https://mcp.anchorregistry.ai/mcp

Install

Claude Desktop

Settings → Integrations → Add server. URL: https://mcp.anchorregistry.ai/mcp

Claude Code

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

Cursor

Settings → MCP → Add new MCP server. Name: anchorregistry · Type: http · URL: https://mcp.anchorregistry.ai/mcp

Tools

ar_verify_arid

Resolves an AR-ID to its full provenance record.

"What's at AR-2026-qnPOJ1z?"

ar_verify_by_hash

Resolves an artifact by SHA-256 manifest hash.

ar_resolve_tree

Returns the 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.

The full surface is documented at:

Roadmap

v0.2 will add ar_check_balance and ar_register_artifact once the MCP credential-handling pattern stabilizes across clients. ar_seal_tree is deferred indefinitely (irreversible action; needs robust user-confirmation primitives the protocol does not yet provide). The deferred tools are fully implemented and live in src/future-tools.ts — enabling them is a one-line flip per tool.

Develop

bash
npm installnpm test           # vitest, hits live api.anchorregistry.ainpm run type-checknpm run dev        # wrangler dev — http://localhost:8787npm run deploy     # wrangler deploy

Verify locally with the MCP inspector:

bash
npx @modelcontextprotocol/inspector http://localhost:8787/mcp

License

MIT.

See also

Source: README.md at commit 1762fbf

Tools

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Version history

1
  1. v0.1.0LatestSep 16, 2026