AnchorRegistry

io.github.AnchorRegistry/ar-mcpVersion 0.1.0

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

Status

Responds552 msNov 14, 2026, 14:35 UTCAnswered our handshake without sign-in.

Registry data may be out of date

We could not refresh it, so this page shows the last copy.

Last checked: Nov 14, 2026, 14:35 UTC
Latency: 552 ms
Remotes responding: 1 of 2
Sign-in: No sign-in, Sign-in unknown
Hosting: Hosted outside the EU (detected)
Registry data as of: Nov 14, 2026, 22:14 UTC

Data from the official MCP Registry, checked by run.zero. How we check

Connect

Streamable HTTP

https://mcp.anchorregistry.ai/mcpResponds552 msNov 14, 2026, 14:35 UTC

No sign-in

Claude Code

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

Claude Desktop and claude.ai

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Settings > Connectors > Add custom connector
Name: ar-mcp
Remote MCP server URL: https://mcp.anchorregistry.ai/mcp

Cursor

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

VS Code

code --add-mcp '{"name":"ar-mcp","type":"http","url":"https://mcp.anchorregistry.ai/mcp"}'

SSE

https://mcp.anchorregistry.ai/sseNot checkedUses SSE

Uses SSE (legacy), not checked

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Tools

3 tools

Tools of AnchorRegistry
	Description		Read-only	Idempotent	Open world
`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 anchored as the root with its training dataset and model weights as children.	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 anchored as the root with its training dataset and model weights as children.	Not declared	Not declared	Not declared	Not declared
`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 has been sealed, retracted, voided, or affirmed. Free, public, no auth required.	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 has been sealed, retracted, voided, or affirmed. Free, public, no auth required.	Not declared	Not declared	Not declared	Not declared
`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.	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.	Not declared	Not declared	Not declared	Not declared

Details

Registry status: Active
Published: Apr 30, 2026
Updated: Apr 30, 2026
Website: https://anchorregistry.com/⁠ (opens in a new tab)
Repository: https://github.com/anchorregistry/ar-mcp⁠ (opens in a new tab)
Categories: Uncategorized
GDPR: Not declared

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