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Health: Not checked yetWe have not completed a health check for this listing yet.Last checked 8/10/2026, 11:46:07 PM

AnchorRegistry

Enrichment pendingWe haven’t run our AI enrichment pass on this listing yet, so the overview, use cases, and FAQ below may be sparse or missing. We work through the catalog over time — check back soon.
View RepositoryVisit Website

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

Quick Install

Automated & IDE Setup

Copy the AI prompt to install this server into Claude Code, Cursor, or another agent — or use 1-click editor setup below.

Add to CursorAdd to VS Code
Manual Client & Custom JSON ConfigExpand JSON ▾

Install Config Generator

Choose your client
claude_desktop_config.json
{
  "mcpServers": {
    "anchorregistry": {
      "command": "npx",
      "args": [
        "-y",
        "anchorregistry"
      ]
    }
  }
}

💡 Paste into ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\Claude\claude_desktop_config.json (Windows)

Install Directory Badge Claim listing Alternatives💻 More in Developer Tools

Documentation Overview

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

Terminal
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:

  • https://anchorregistry.ai/llms.txt
  • https://anchorregistry.ai/agents.json
  • https://api.anchorregistry.ai/openapi.json

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

Terminal
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:

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

License

MIT.

See also

  • AnchorRegistry: https://anchorregistry.com
  • Python SDK: https://pypi.org/project/anchorregistry/
  • Source: https://github.com/AnchorRegistry/ar-mcp
  • Spec: https://anchorregistry.ai/agents.json
  • Contracts: https://github.com/AnchorRegistry/ar-contracts-v1

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Frequently Asked Questions about AnchorRegistry

Add the following block to your claude_desktop_config.json under mcpServers: "mcpServers": { "anchorregistry": { "command": "npx", "args": ["-y", "AnchorRegistry"] } }

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Technical Specs & Signals

Category💻Developer Tools
More technical detailsExpand ▾
TransportSTDIO
RuntimeNode.js
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27Quality signal: Emerging · 27/100How this signal is calculated ▾
Server availabilityNot measured

Not scored for repo-hosted servers — we can't reach the running server, only its GitHub page. Hosted MCP endpoints are health-checked live.

Verified ownership8/20
Documentation & tools11/30
Adoption & activity1/15
Community engagement0/10

A guidance signal from public completeness & health data — not a user rating. New listings start lower and rise as they add docs, get verified, and grow adoption. Signals we can't observe for a listing are skipped, not counted against it.

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