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8 clients · secrets stay placeholders

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

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

[mcp_servers.ar-mcp]
url = "https://mcp.anchorregistry.ai/mcp"

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "ar-mcp": {
      "type": "remote",
      "url": "https://mcp.anchorregistry.ai/mcp",
      "enabled": true
    }
  }
}

{
  "mcpServers": {
    "ar-mcp": {
      "type": "http",
      "url": "https://mcp.anchorregistry.ai/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=ar-mcp&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vbWNwLmFuY2hvcnJlZ2lzdHJ5LmFpL21jcCJ9"
}

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

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

extensions:
  "ar-mcp":
    enabled: true
    name: "ar-mcp"
    type: streamable_http
    uri: "https://mcp.anchorregistry.ai/mcp"
    timeout: 300

Quality 79 / 100good

protocol75 · weight 25

warn
protocol.modernnewest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
n/a
protocol.statelessonly applies to 2026-07-28 servers
pass
protocol.transportstreamable HTTP
n/a
protocol.list_ttlonly applies to 2026-07-28 servers

authorizationn/a · weight 15

n/a
auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
n/a
auth.secret_in_urlno templated URL

tool hygiene71 · weight 30

pass
tools.descriptionsevery tool has a description
pass
tools.description_lengthdescriptions are concise
pass
tools.schemasevery tool has an object input schema
fail
tools.annotationsno tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones
fail
tools.directory_hintsno tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: ar_verify_arid (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); ar_resolve_tree (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); ar_verify_by_hash (readOnlyHint, destructiveHint, idempotentHint, openWorldHint)
pass
tools.token_costabout 441 tokens to load every tool
pass
tools.api_dumptools are not a one-to-one API dump

stability100 · weight 15

pass
stability.changesno tool changes in 30 days
pass
stability.rug_pullno tool changed its meaning under the same name

dependenciesn/a · weight 15

n/a
deps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI package

3 tools, about 441 tokens to load them all · tool set bc7a88abc1b3 · checked 2026-10-20 12:13 UTC

Tool changes

No tool definition changes recorded. A server's first observation is its baseline; later probes record what changes.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 90 / 100

provenance90

liveness100

freshness65

hygiene100

+repository +namespace-matches-repo +website +reachable +uptime-99% ~updated-173d-ago

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Endpoints

remote	auth	reachable	uptime 30d	p50	protocol	last ok
`https://mcp.anchorregistry.ai/mcp` streamable-http	none	yes	96%	349 ms	2025-11-25	2026-10-20
`https://mcp.anchorregistry.ai/sse` sse	none	yes	99%	313 ms	2025-11-25	2026-10-20

Tools (3)

`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.
`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.
`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.

Schemas: list_tools.

Similar MCP servers

Official server.json

{
  "name": "io.github.AnchorRegistry/ar-mcp",
  "title": "AnchorRegistry",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://mcp.anchorregistry.ai/mcp",
      "type": "streamable-http"
    },
    {
      "url": "https://mcp.anchorregistry.ai/sse",
      "type": "sse"
    }
  ],
  "version": "0.1.0",
  "repository": {
    "url": "https://github.com/anchorregistry/ar-mcp",
    "source": "github"
  },
  "websiteUrl": "https://anchorregistry.com",
  "description": "On-chain provenance lookup for AnchorRegistry. Resolve AR-IDs, hashes, and full trees. Authless."
}