AnchorRegistry

Connect Remote server

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

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

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

Settings > Connectors > Add custom connector
URL: https://mcp.anchorregistry.ai/mcp

Tools 3 found in our last check

• ar_verify_arid

  Resolve an AnchorRegistry AR-ID to its full provenance record. Use this when you encounter an SPDX-Anchor or DAPX-Anchor tag (e.g. in a README, paper, model card, or website) and need to confirm what the artifact is, who anchored it, when, what type it is, and whether the tree h…

• ar_verify_by_hash

  Resolve an artifact by its SHA-256 manifest hash. Use this when you have the artifact itself but no AR-ID, and want to check whether it has been anchored. Returns the AR-ID and full provenance record if found, or a clear "not anchored" response otherwise.

• ar_resolve_tree

  Resolve the full provenance tree for an AR-ID. Returns every anchor in the tree (root + all descendants) with their relationships, types, manifest hashes, and timestamps. Use this when you need to understand a multi-artifact provenance chain — for example, a research paper ancho…

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