How do I connect an AI agent to SofortFax – Faxen mit KI?

Use the MCP streamable HTTP endpoint https://sofortfax.de/api/mcp.php.

Catalog › de.sofortfax/fax

Is SofortFax – Faxen mit KI reliable?

Flaky Partly. Faceabot measured SofortFax – Faxen mit KI 7 times and only 86% of checks succeeded. Plan a fallback. It also does the job: its real read-only task worked 6 of 6 times.

Last check: 2026-10-10 23:31 UTC · answered in 8000 ms · remote (no install)

En français : Instable. Faceabot teste cet outil lui-même, en continu, sans dépendre de ce que son auteur affirme.

What it does

Send real faxes from AI chat (DE/AT + 40 countries). PDF, JPG, photo. Pay per fax via Stripe.

Source: official MCP registry (registry.modelcontextprotocol.io) · version 1.0.0 · publisher website

Connect your agent

{
  "mcpServers": {
    "fax": {
      "url": "https://sofortfax.de/api/mcp.php"
    }
  }
}

Or ask Faceabot first: MCP tool check_reliability {"id":"de.sofortfax/fax"} on https://faceabot.com/api/mcp.

Does it actually do the job?

Does the job (tested) — Faceabot asked get_fax_price to do a small read-only task 6 time(s): 6 returned a real result, the last 6 in a row. Last result: ok in 3520 ms.

Sample input: {}. A success means a non-empty result without error; it does not certify the accuracy or safety of the content.

Faceabot measurements

When	Answers	Real task	Latency
2026-10-10 23:31 UTC	❌ timeout		8000 ms
2026-10-10 17:25 UTC	✅ ok	✅ done	9253 ms
2026-10-10 11:15 UTC	✅ ok	✅ done	9813 ms
2026-10-10 05:11 UTC	✅ ok	✅ done	8410 ms
2026-10-09 22:51 UTC	✅ ok	✅ done	10378 ms
2026-10-09 16:10 UTC	✅ ok	✅ done	10547 ms
2026-10-09 09:01 UTC	✅ ok	✅ done	9516 ms

Method: MCP initialize then tools/list from Faceabot (FaceabotProbe/1.0), plus one read-only tool call with a neutral input when the server declares one, repeated over time. This checks that the server is up and speaks MCP correctly; it does not certify the quality or safety of each tool. How measurement works.

More from the same publisher

SofortFax (KI-Fax-Credits) Flaky · 86% over 7 checks Fails real tasks · 0/6

Send faxes from AI chat with prepaid credits (1 credit = 1 fax, up to 40 pages). DE/AT + 40 more.

MCP endpoint : https://sofortfax.de/api/mcp-credits.php · website · measurements and details

SofortFax – Faxen mit KI (Login) Private (key required)

Fax from ChatGPT/Claude with OAuth sign-in: pay per fax or KI credits. DE/AT + 40 countries.

MCP endpoint : https://sofortfax.de/api/mcp-oauth.php · website · measurements and details

Publisher of SofortFax – Faxen mit KI?

Show your measured reliability on your README or website:

[![Measured by Faceabot](https://faceabot.com/badge/de.sofortfax/fax.svg)](https://faceabot.com/tools/de.sofortfax/fax)

Data in JSON: /api/catalog?id=de.sofortfax/fax · Stop probes: POST /api/reliability/opt-out

AI agents: all of this is available without keys over MCP https://faceabot.com/api/mcp · HTTP https://faceabot.com/api/catalog?q=… · Guide : llms.txt

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