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8 clients · secrets stay placeholders

JSON (mcpServers)Claude CodeCodexOpenCodeCursorVS CodeGemini CLIGoose

{
  "mcpServers": {
    "checkdigit": {
      "type": "http",
      "url": "https://checkdigit.mike-tusa.workers.dev/mcp",
      "headers": {
        "Authorization": "Bearer ${CHECKDIGIT_TOKEN}"
      }
    }
  }
}

claude mcp add --transport http checkdigit https://checkdigit.mike-tusa.workers.dev/mcp --header "Authorization: Bearer ${CHECKDIGIT_TOKEN}"

[mcp_servers.checkdigit]
url = "https://checkdigit.mike-tusa.workers.dev/mcp"
bearer_token_env_var = "CHECKDIGIT_TOKEN"

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "checkdigit": {
      "type": "remote",
      "url": "https://checkdigit.mike-tusa.workers.dev/mcp",
      "enabled": true,
      "headers": {
        "Authorization": "Bearer {env:CHECKDIGIT_TOKEN}"
      }
    }
  }
}

{
  "mcpServers": {
    "checkdigit": {
      "type": "http",
      "url": "https://checkdigit.mike-tusa.workers.dev/mcp",
      "headers": {
        "Authorization": "Bearer ${CHECKDIGIT_TOKEN}"
      }
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=checkdigit&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vY2hlY2tkaWdpdC5taWtlLXR1c2Eud29ya2Vycy5kZXYvbWNwIiwiaGVhZGVycyI6eyJBdXRob3JpemF0aW9uIjoiQmVhcmVyICR7Q0hFQ0tESUdJVF9UT0tFTn0ifX0%3D"
}

{
  "servers": {
    "checkdigit": {
      "type": "http",
      "url": "https://checkdigit.mike-tusa.workers.dev/mcp",
      "headers": {
        "Authorization": "Bearer ${CHECKDIGIT_TOKEN}"
      }
    }
  }
}

{
  "mcpServers": {
    "checkdigit": {
      "httpUrl": "https://checkdigit.mike-tusa.workers.dev/mcp",
      "headers": {
        "Authorization": "Bearer ${CHECKDIGIT_TOKEN}"
      }
    }
  }
}

extensions:
  "checkdigit":
    enabled: true
    name: "checkdigit"
    type: streamable_http
    uri: "https://checkdigit.mike-tusa.workers.dev/mcp"
    headers:
      "Authorization": "Bearer ${CHECKDIGIT_TOKEN}"
    timeout: 300

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

Quality 100 / 100new

protocol100 · weight 25

pass
protocol.modernsupports 2026-07-28 (server/discover)
pass
protocol.statelessanswers without a session
pass
protocol.transportstreamable HTTP
pass
protocol.list_ttltool list is cacheable (ttlMs 3600000)

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 hygiene100 · 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.annotations2 of 2 tools declare readOnlyHint or destructiveHint
pass
tools.directory_hintsevery tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
pass
tools.token_costabout 403 tokens to load every tool
pass
tools.api_dumptools are not a one-to-one API dump

stabilityn/a · weight 15

n/a
stability.changes, stability.rug_pulltool history recorded for 5 of the 7 days needed

dependenciesn/a · weight 15

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

2 tools, about 403 tokens to load them all · tool set 136039d8d3b9 · 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 83 / 100

no-repository

provenance55

liveness100

freshness100

hygiene80

+dns-namespace +website +reachable +uptime-100% +updated-5d-ago -no-repository

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://checkdigit.mike-tusa.workers.dev/mcp` streamable-http	none	yes	100%	151 ms	2026-07-28, 2025-11-25, 2025-06-18, 2025-03-26, 2024-11-05	2026-10-20

Tools (2)

get_metaread-only Return the service version and build, supported IBAN and VAT countries, GTIN formats, the disclaimer and the current limits. Does not count as a check. Read-only. Same data as GET /v1/meta.

validate_coderead-only Check the format and check digits of one identifier: IBAN (ISO 13616, per-country length and layout), BIC/SWIFT (ISO 9362 format and country), EU VAT number (offline checksum, VIES not queried), GTIN/EAN-8/UPC-A/EAN-13/GTIN-14 (GS1 mod 10) or ISBN-10/13. type "auto" (default) detects the type from the shape. Returns valid, a reason when invalid (e.g. the expected check digit), and normalized/formatted forms. Format check, not a compliance check: valid does not mean the account, registration or product exists. The code is sent in a POST body and not stored or logged. Read-only. Same engine, keys and limits as POST /v1/{type}.

Schemas: list_tools.

Similar MCP servers

Official server.json

{
  "name": "dev.workers.mike-tusa.checkdigit/checkdigit",
  "title": "CheckDigit",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://checkdigit.mike-tusa.workers.dev/mcp",
      "type": "streamable-http",
      "headers": [
        {
          "name": "Authorization",
          "isSecret": true,
          "description": "Optional. 'Bearer <key>' for higher limits. Works without a key."
        }
      ]
    }
  ],
  "version": "0.2.1",
  "websiteUrl": "https://checkdigit.mike-tusa.workers.dev/",
  "description": "Offline check-digit validation for IBAN, BIC, EU VAT, GTIN/EAN/UPC and ISBN. Format check only."
}