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8 clients · secrets stay placeholders

JSON (mcpServers)Claude CodeCodexOpenCodeCursorVS CodeGemini CLIGoose

{
  "mcpServers": {
    "letter": {
      "type": "http",
      "url": "https://briefflink.de/api/mcp.php"
    }
  }
}

claude mcp add --transport http letter https://briefflink.de/api/mcp.php

[mcp_servers.letter]
url = "https://briefflink.de/api/mcp.php"

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "letter": {
      "type": "remote",
      "url": "https://briefflink.de/api/mcp.php",
      "enabled": true
    }
  }
}

{
  "mcpServers": {
    "letter": {
      "type": "http",
      "url": "https://briefflink.de/api/mcp.php"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=letter&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vYnJpZWZmbGluay5kZS9hcGkvbWNwLnBocCJ9"
}

{
  "servers": {
    "letter": {
      "type": "http",
      "url": "https://briefflink.de/api/mcp.php"
    }
  }
}

{
  "mcpServers": {
    "letter": {
      "httpUrl": "https://briefflink.de/api/mcp.php"
    }
  }
}

extensions:
  "letter":
    enabled: true
    name: "letter"
    type: streamable_http
    uri: "https://briefflink.de/api/mcp.php"
    timeout: 300

Quality 81 / 100new

protocol75 · weight 25

warn
protocol.modernnewest supported version is 2025-06-18; 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.annotations4 of 4 tools declare readOnlyHint or destructiveHint
fail
tools.directory_hintsno tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: send_letter (idempotentHint); get_letter_price (destructiveHint, idempotentHint); create_upload_link (idempotentHint); …
pass
tools.token_costabout 692 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 0 of the 7 days needed

dependenciesn/a · weight 15

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

4 tools, about 692 tokens to load them all · tool set 4a85162db747 · checked 2026-10-19 21:42 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-0d-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://briefflink.de/api/mcp.php` streamable-http	none	yes	100%	769 ms	2025-06-18	2026-10-19

Tools (4)

`create_upload_link`	Erstellt einen Link (24 h gültig), über den der Nutzer sein PDF selbst hochlädt. Die upload_id danach an send_letter übergeben.
`get_letter_price`read-only	Berechnet den Endpreis eines Briefes (Druck, Kuvert, Porto) aus Seitenzahl, Einschreiben-Wahl und Zielland. Kein Auftrag, keine Kosten.
`get_letter_status`read-only	Zeigt, ob ein Auftrag noch auf Zahlung wartet, bezahlt, versendet oder fehlgeschlagen ist.
`send_letter`	Legt einen Briefauftrag an und gibt einen Stripe-Bezahllink zurück. Der Brief wird erst gedruckt und versendet, wenn der Nutzer bezahlt hat. Dokument per upload_id (aus create_upload_link) oder pdf_base64.

Schemas: list_tools.

Similar MCP servers

Official server.json

{
  "name": "de.briefflink/letter",
  "icons": [
    {
      "src": "https://briefflink.de/briefflink-logo-512.png",
      "sizes": [
        "512x512"
      ],
      "mimeType": "image/png"
    }
  ],
  "title": "Briefflink – Briefe mit KI versenden",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
  "remotes": [
    {
      "url": "https://briefflink.de/api/mcp.php",
      "type": "streamable-http"
    }
  ],
  "version": "1.0.0",
  "websiteUrl": "https://briefflink.de/ai/",
  "description": "Send real paper letters from AI chat: print, envelope, postage, delivery. Pay per letter."
}