How do I install AnchorRegistry?

Copy the http config for Cursor, Claude Desktop, Claude Code, or VS Code on this page. It uses the publisher's install, not a PlugMCP proxy.

Does AnchorRegistry need an API key?

No required environment variable is listed on this record.

What transport does AnchorRegistry use?

AnchorRegistry is reached over HTTP.

When was AnchorRegistry last checked?

Last checked 2026-11-08. On-chain provenance lookup for AnchorRegistry. Resolve AR-IDs, hashes, and full trees. Authless.

AnchorRegistry MCP server

Power your agent

Add this server

The publisher's own URL. Not a PlugMCP endpoint.

Add to Cursor Add in Claude Add to VS Code Run on PlugMCP

Host a copy with our keys and logs.

Server URL

https://mcp.anchorregistry.ai/mcp

The Claude button above opens Claude with the name and URL filled in. You still confirm it there.

shClaude Code

1claude mcp add --transport http io.github.anchorregistry-ar-mcp https://mcp.anchorregistry.ai/mcp

Run in a terminal.

jsonClaude Desktop

1{2  "mcpServers": {3    "io.github.anchorregistry-ar-mcp": {4      "command": "npx",5      "args": [6        "-y",7        "mcp-remote",8        "https://mcp.anchorregistry.ai/mcp"9      ]10    }11  }12}

claude_desktop_config.json

Remote · HTTPPublisher installStep-by-step: add this in Claude

Remote URL or a command on your machine? How the two installs differ

Run on PlugMCP

Host a copy with our keys and logs.

A new server you create. It is not this listing's official endpoint. Use the publisher install when you want their URL and their credentials.

Launch

Server facts

Live

Transport: http
Version: 0.1.0
Last checked

3 tools

Tools

tools/listVoice mode preview

Tool	What it does
ar_verify_arid

ar-mcp

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

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

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. 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

npm install
npm test           # vitest, hits live api.anchorregistry.ai
npm run type-check
npm run dev        # wrangler dev — http://localhost:8787
npm run deploy     # wrangler deploy

Verify locally with the MCP inspector:

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

License

MIT.

AnchorRegistry

Add this server

Host a copy with our keys and logs.

Server facts

Tools

Questions

How do I install AnchorRegistry?

Does AnchorRegistry need an API key?

What transport does AnchorRegistry use?

When was AnchorRegistry last checked?

Documentation

ar-mcp

Install

Claude Desktop

Claude Code

Cursor

Tools

`ar_verify_arid`

`ar_verify_by_hash`

`ar_resolve_tree`

How it works

Roadmap

Develop

License

See also