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8 clients · secrets stay placeholders

JSON (mcpServers)Claude CodeCodexOpenCodeCursorVS CodeGemini CLIGoose

{
  "mcpServers": {
    "fax-credits": {
      "type": "http",
      "url": "https://sofortfax.de/api/mcp-credits.php",
      "headers": {
        "X-API-Key": "${X_API_KEY}",
        "Authorization": "${X_API_KEY}"
      }
    }
  }
}

claude mcp add --transport http fax-credits https://sofortfax.de/api/mcp-credits.php --header "X-API-Key: ${X_API_KEY}" --header "Authorization: ${X_API_KEY}"

[mcp_servers.fax-credits]
url = "https://sofortfax.de/api/mcp-credits.php"
env_http_headers = { "X-API-Key" = "X_API_KEY", "Authorization" = "X_API_KEY" }

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "fax-credits": {
      "type": "remote",
      "url": "https://sofortfax.de/api/mcp-credits.php",
      "enabled": true,
      "headers": {
        "X-API-Key": "{env:X_API_KEY}",
        "Authorization": "{env:X_API_KEY}"
      }
    }
  }
}

{
  "mcpServers": {
    "fax-credits": {
      "type": "http",
      "url": "https://sofortfax.de/api/mcp-credits.php",
      "headers": {
        "X-API-Key": "${X_API_KEY}",
        "Authorization": "${X_API_KEY}"
      }
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=fax-credits&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vc29mb3J0ZmF4LmRlL2FwaS9tY3AtY3JlZGl0cy5waHAiLCJoZWFkZXJzIjp7IlgtQVBJLUtleSI6IiR7WF9BUElfS0VZfSIsIkF1dGhvcml6YXRpb24iOiIke1hfQVBJX0tFWX0ifX0%3D"
}

{
  "servers": {
    "fax-credits": {
      "type": "http",
      "url": "https://sofortfax.de/api/mcp-credits.php",
      "headers": {
        "X-API-Key": "${X_API_KEY}",
        "Authorization": "${X_API_KEY}"
      }
    }
  }
}

{
  "mcpServers": {
    "fax-credits": {
      "httpUrl": "https://sofortfax.de/api/mcp-credits.php",
      "headers": {
        "X-API-Key": "${X_API_KEY}",
        "Authorization": "${X_API_KEY}"
      }
    }
  }
}

extensions:
  "fax-credits":
    enabled: true
    name: "fax-credits"
    type: streamable_http
    uri: "https://sofortfax.de/api/mcp-credits.php"
    headers:
      "X-API-Key": "${X_API_KEY}"
      "Authorization": "${X_API_KEY}"
    timeout: 300

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

Quality 91 / 100strong

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 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.annotations6 of 6 tools declare readOnlyHint or destructiveHint
pass
tools.directory_hintsevery tool declares readOnlyHint, destructiveHint, idempotentHint and openWorldHint
pass
tools.token_costabout 1,027 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

6 tools, about 1,027 tokens to load them all · tool set 4be69d71a454 · checked 2026-10-20 23:59 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-12d-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://sofortfax.de/api/mcp-credits.php` streamable-http	api_key `${X_API_KEY}`	yes	100%	363 ms	2025-11-25	2026-10-20

Tools (6)

`create_upload_link`	Erstellt einen sicheren Einmal-Upload-Link (30 Minuten gültig) für das Fax-Dokument: PDF, JPG, PNG oder direkt ein Foto mit der Handykamera, max. 10 MB. Der Nutzer öffnet upload_url und lädt die Datei hoch; danach send_fax mit der upload_id. Kostet nichts und sendet nichts.
`get_account_balance`read-only	Zeigt das verbleibende KI-Fax-Guthaben (Credits) dieses Keys.
`get_fax_price`read-only	Prüft, ob eine Faxnummer erlaubt ist. Mit KI-Credits kostet jedes Fax 1 Credit (bis 40 Seiten).
`get_fax_status`read-only	Liefert den Status eines Faxes (Zahlung ausstehend, geplant, wird gesendet, zugestellt, fehlgeschlagen, storniert) und nach Zustellung den Link zum Sendebericht.
`list_fax_history`read-only	Listet die letzten Faxe dieses KI-Credits-Keys mit Status.
`send_fax`	Sendet ein echtes Fax über SofortFax und zieht 1 Credit ab (1 Credit = 1 Fax bis 40 Seiten). Vorher dem Nutzer Faxnummer, Dokument und ggf. Sendezeitpunkt bestätigen lassen. DOKUMENT (genau eines): "upload_id" aus create_upload_link (für Dateien/Fotos auf dem Gerät), "file" (in ChatGPT angehängte Datei, wird automatisch befüllt), "document_url" (direkter öffentlicher HTTPS-Link zu PDF/JPG/PNG) oder "document_base64" (nur sehr kleine Dateien, max. 700 KB). Bestätigung, Zustellbericht (Sendebericht) und Dankes-Mail kommen per E-Mail an "email". Das Ergebnis sagt eindeutig, ob das Fax gesendet, geplant oder noch unbezahlt ist.

Schemas: list_tools.

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Official server.json

{
  "name": "de.sofortfax/fax-credits",
  "icons": [
    {
      "src": "https://sofortfax.de/sofortfax-logo.png",
      "sizes": [
        "800x800"
      ],
      "mimeType": "image/png"
    }
  ],
  "title": "SofortFax (KI-Fax-Credits)",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://sofortfax.de/api/mcp-credits.php",
      "type": "streamable-http",
      "headers": [
        {
          "name": "X-API-Key",
          "isSecret": true,
          "isRequired": true,
          "description": "Dein sfk_ Key aus der KI-Credits-Mail (kaufen: sofortfax.de/ki-credits.html)"
        }
      ]
    }
  ],
  "version": "1.0.0",
  "websiteUrl": "https://sofortfax.de/ki-credits.html",
  "description": "Send faxes from AI chat with prepaid credits (1 credit = 1 fax, up to 40 pages). DE/AT + 40 more."
}