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8 clients · secrets stay placeholders

JSON (mcpServers)Claude CodeCodexOpenCodeCursorVS CodeGemini CLIGoose

{
  "mcpServers": {
    "arcnautical": {
      "type": "http",
      "url": "https://mcp.arcnautical.com/mcp",
      "headers": {
        "Authorization": "Bearer ${ARCNAUTICAL_TOKEN}"
      }
    }
  }
}

claude mcp add --transport http arcnautical https://mcp.arcnautical.com/mcp --header "Authorization: Bearer ${ARCNAUTICAL_TOKEN}"

[mcp_servers.arcnautical]
url = "https://mcp.arcnautical.com/mcp"
bearer_token_env_var = "ARCNAUTICAL_TOKEN"

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "arcnautical": {
      "type": "remote",
      "url": "https://mcp.arcnautical.com/mcp",
      "enabled": true,
      "headers": {
        "Authorization": "Bearer {env:ARCNAUTICAL_TOKEN}"
      }
    }
  }
}

{
  "mcpServers": {
    "arcnautical": {
      "type": "http",
      "url": "https://mcp.arcnautical.com/mcp",
      "headers": {
        "Authorization": "Bearer ${ARCNAUTICAL_TOKEN}"
      }
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=arcnautical&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vbWNwLmFyY25hdXRpY2FsLmNvbS9tY3AiLCJoZWFkZXJzIjp7IkF1dGhvcml6YXRpb24iOiJCZWFyZXIgJHtBUkNOQVVUSUNBTF9UT0tFTn0ifX0%3D"
}

{
  "servers": {
    "arcnautical": {
      "type": "http",
      "url": "https://mcp.arcnautical.com/mcp",
      "headers": {
        "Authorization": "Bearer ${ARCNAUTICAL_TOKEN}"
      }
    }
  }
}

{
  "mcpServers": {
    "arcnautical": {
      "httpUrl": "https://mcp.arcnautical.com/mcp",
      "headers": {
        "Authorization": "Bearer ${ARCNAUTICAL_TOKEN}"
      }
    }
  }
}

extensions:
  "arcnautical":
    enabled: true
    name: "arcnautical"
    type: streamable_http
    uri: "https://mcp.arcnautical.com/mcp"
    headers:
      "Authorization": "Bearer ${ARCNAUTICAL_TOKEN}"
    timeout: 300

Placeholders to fill from your own secret store: ${ARCNAUTICAL_TOKEN}. The registry never accepts secret values.

Quality 82 / 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 hygiene86 · weight 30

pass
tools.descriptionsevery tool has a description
pass
tools.description_lengthdescriptions are concise
pass
tools.schemasevery tool has an object input schema
pass
tools.annotations7 of 7 tools declare readOnlyHint or destructiveHint
fail
tools.directory_hintsno tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: check_vessel (destructiveHint); screen_vessel (destructiveHint); get_screening (destructiveHint); …
pass
tools.token_costabout 1,384 tokens to load every tool
pass
tools.api_dumptools are not a one-to-one API dump

stability100 · weight 15

pass
stability.changes2 tool changes in 30 days
pass
stability.rug_pullno tool changed its meaning under the same name

dependencies67 · weight 15

pass
deps.known_vulnsno known advisory in 98 resolved packages
fail
deps.mcp_sdk_version@modelcontextprotocol/sdk 1.30.1 has 1 known advisory (GHSA-6qxp-vccf-f47h); update @modelcontextprotocol/sdk to 1.31.0 or later
pass
deps.resolvable@arcnautical/[email protected] resolved: 98 packages

7 tools, about 1,384 tokens to load them all · tool set bacfe8bf6e4d · tools last changed 2026-10-11 · checked 2026-10-20 11:08 UTC

Tool changes

2026-10-11screen_vesselchangeddescription
before
The authenticated screening record for one vessel: every sanctions match with its source list, programme and confidence class, ownership opacity, the graded vetting factors, per-source freshness, and a retained record id. Needs ARCNAUTICAL_API_KEY. Metered: a new self-serve key includes 5,000 live screenings once (a one-time allowance). The same vessel asked again on the same day replays the stored record free. If the result is INCOMPLETE for identity, call again with vessel_name.
after · 86% of words in common
The authenticated screening record for one vessel: every sanctions match with its source list, programme and confidence class, ownership opacity, the graded vetting factors, per-source freshness, and a retained record id. Needs ARCNAUTICAL_API_KEY. Metered: a new self-serve key includes a one-time free allowance of live screenings; get_usage reports what is left. The same vessel asked again on the same day replays the stored record free. If the result is INCOMPLETE for identity, call again with vessel_name.
2026-10-01screen_vesselchangeddescription
before
The authenticated screening record for one vessel: every sanctions match with its source list, programme and confidence class, ownership opacity, the graded vetting factors, per-source freshness, and a retained record id. Needs ARCNAUTICAL_API_KEY. Metered: 5,000 live screenings a month are included with a self-serve key. The same vessel asked again on the same day replays the stored record free. If the result is INCOMPLETE for identity, call again with vessel_name.
after · 87% of words in common
The authenticated screening record for one vessel: every sanctions match with its source list, programme and confidence class, ownership opacity, the graded vetting factors, per-source freshness, and a retained record id. Needs ARCNAUTICAL_API_KEY. Metered: a new self-serve key includes 5,000 live screenings once (a one-time allowance). The same vessel asked again on the same day replays the stored record free. If the result is INCOMPLETE for identity, call again with vessel_name.

Full history: list_changes · trend: quality JSON.

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 100 / 100

provenance100

liveness99

freshness100

hygiene100

+repository +namespace-matches-repo +dns-namespace +website +reachable +uptime-97% +updated-27d-ago

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

Dependencies

@arcnautical/[email protected] npm97 dependencies, resolved · MCP SDK @modelcontextprotocol/sdk 1.30.1 · advisories checked 2026-10-19

advisory	severity	package	fixed in
GHSA-6qxp-vccf-f47hMCP TypeScript SDK: OAuth client could send credentials to an authorization server chosen by the MCP server	high	`@modelcontextprotocol/[email protected]`MCP SDK, direct	fixed in `1.31.0`

Dependency graphs from deps.dev; advisories from OSV.dev, including the GitHub Advisory Database and the PyPI Advisory Database; all CC BY 4.0. The graph is what a clean install of this version resolves today; nothing was installed or run. How it is checked.

Endpoints

remote	auth	reachable	uptime 30d	p50	protocol	last ok
`https://mcp.arcnautical.com/mcp` streamable-http	none	yes	97%	956 ms	2025-11-25	2026-10-20

package	registry	version	runtime	secrets
`@arcnautical/mcp`	npm	0.2.1	–	`ARCNAUTICAL_API_KEY`

Tools (7)

`check_vessel`read-only	Screen one vessel by IMO number against OFAC SDN, EU, UN, UK OFSI and OpenSanctions, with an ownership-opacity score and an A–E vetting grade from port-state-control history. Works with no API key. Rate-limited to 100 requests per hour per IP. Returns the VERDICT SUMMARY only; for every sanctions match with its source list and confidence class use screen_vessel (needs a key).
`find_port`read-only	Resolve a port name, country or partial UN/LOCODE to the LOCODEs the routing engine knows. Routes are addressed by LOCODE, so call this before score_voyage rather than guessing a code. Works with no API key.
`get_screening`read-only	Fetch a stored screening record by id — the audit copy, retained ten years. Needs ARCNAUTICAL_API_KEY.
`get_usage`read-only	Live and test usage, remaining allowance, reset time, batch limits and monitor capacity for the configured key.
`score_voyage`	Route risk between two ports (UN/LOCODEs): a 0–100 score, risk level, the signals driving it (war-risk areas, piracy, chokepoints, weather, sanctions exposure of transited EEZs), confidence and any missing sources. Resolve port names with find_port first. Needs ARCNAUTICAL_API_KEY; 10,000 assessments a month are included with a self-serve key.
`screen_vessel`	The authenticated screening record for one vessel: every sanctions match with its source list, programme and confidence class, ownership opacity, the graded vetting factors, per-source freshness, and a retained record id. Needs ARCNAUTICAL_API_KEY. Metered: a new self-serve key includes a one-time free allowance of live screenings; get_usage reports what is left. The same vessel asked again on the same day replays the stored record free. If the result is INCOMPLETE for identity, call again with vessel_name.
`screen_vessels`	Batch-screen a list of IMO numbers and wait for the results (up to two minutes). Returns one verdict per hull plus the batch status. Needs ARCNAUTICAL_API_KEY. Each hull spends one screening unit unless it was already screened today.

Schemas: list_tools.

Similar MCP servers

Official server.json

{
  "name": "com.arcnautical/mcp",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://mcp.arcnautical.com/mcp",
      "type": "streamable-http",
      "headers": [
        {
          "name": "Authorization",
          "isSecret": true,
          "description": "Optional. `Bearer <API key>` unlocks the full screening record, batches, voyage scoring and usage; self-serve at https://arcnautical.com/get-a-key?from=mcp. check_vessel and find_port work with no header."
        }
      ]
    }
  ],
  "version": "0.2.1",
  "packages": [
    {
      "version": "0.2.1",
      "transport": {
        "type": "stdio"
      },
      "identifier": "@arcnautical/mcp",
      "registryType": "npm",
      "registryBaseUrl": "https://registry.npmjs.org",
      "environmentVariables": [
        {
          "name": "ARCNAUTICAL_API_KEY",
          "isSecret": true,
          "description": "Optional. Self-serve at https://arcnautical.com/get-a-key?from=mcp; unlocks the full screening record, batches and voyage scoring. check_vessel and find_port work without it."
        }
      ]
    }
  ],
  "repository": {
    "url": "https://github.com/arcnautical/arcnautical-mcp",
    "source": "github"
  },
  "websiteUrl": "https://arcnautical.com/developers/",
  "description": "Screen any vessel by IMO for sanctions, ownership opacity and vetting grade. Keyless check included."
}

Arcnautical