mcp server
SendThisFax
Send real faxes to EU institutions: pay per fax via checkout link or prepaid API key.
Description as published by the maintainer. Source
- version 1.0.0
- active
active — Registry entry last updated 2026-07-08.
What this server can do
4 functions, named and described by the server itself. Parameter names are shown because they say more about what a function does than its name usually does.
check_balance- Get the prepaid credit balance of the API key used to authenticate this MCP connection. Requires a bearer API key (stf_live_...). Buy or top up credits at https://www.sendthisfax.com/en/credits — credits never expire and failed faxes are re-credited automatically.
get_fax_status(fax_id)- Get the current status of a fax. Poll this after send_fax until a terminal state. Fax lifecycle: draft (uploaded, not submitted) -> pending (submitted, awaiting payment) -> sending -> delivered | failed. Payment lifecycle: unpaid -> verifying/open (checkout in progress) -> paid | failed | canceled | expired. A fax that fails after payment is refunded automatically to the payer. Required: fax_id.
get_price(page_count, billing_country)- Get the price quote in euro cents for sending a fax. Pricing: 5.00 EUR for up to 5 pages, plus 0.50 EUR per extra page, plus VAT based on the payer's billing country (0% VAT outside the EU). Required: page_count, billing_country.
send_fax(locale, sender_email, fax_public_id, billing_country, recipient_number)- Submit an uploaded PDF for faxing. Step 1 (before this tool): upload the PDF over plain HTTP multipart, using any HTTP client you have — shell, JavaScript fetch with FormData, Python, etc.: curl -F "file=@document.pdf" https://www.sendthisfax.com/api/upload fetch("https://www.sendthisfax.com/api/upload", {method: "POST", body: formDataWithFile}) The response contains fax_public_id and page_count. PDFs must be unencrypted, at most 50 MB and 1000 pages. Step 2: call this tool with the fax_public_id and the recipient fax number. Two modes: - With an API key (Authorization: Bearer stf_live_... on this MCP connection): the fax price is debited from the prepaid credit balance and sending starts immediately — no checkout, no browser. sender_email and billing_country are optional (they default to the key's records). Buy credits at https://www.sendthisfax.com/en/credits. - Without an API key: sender_email and billing_country are REQUIRED and the tool returns a checkout_url the USER must pay in a browser; the fax is sent automatically once paid. In both modes, poll get_fax_status until status reaches "delivered" or "failed" (failures after payment are auto-refunded). For integration testing, +19898989898 is the designated test recipient number. Required: fax_public_id, recipient_number.
Last successful function declaration observed on . Source: https://www.sendthisfax.com/mcp. We list what the server declared; we do not call any of these functions.
Endpoint status observed on . Source: https://www.sendthisfax.com/mcp.
Signals
These are separate measurements of different things. They are deliberately not combined into one score, because a popularity number that mixes website traffic with saves and stars cannot be checked or acted on.
| Signal | Value | What it measures | Window | Observed | Source |
|---|---|---|---|---|---|
| Latest published version | 1.0.0 | Latest version string the maintainer published to the registry. | as of fetch | Model Context Protocol | |
| Registry record last updated | 2026-07-08 | When the registry record was last updated by its maintainer. | point in time | Model Context Protocol | |
| First listed in the MCP Registry | 2026-07-08 | Date this server was first published to the official MCP Registry. Not a usage or quality measure. | point in time | Model Context Protocol | |
| mcp tools declared | 4 tools | Number of functions the server itself declared when asked to list them. This is what the server offers an agent, not a measure of how well any of them work. | as of probe | www.sendthisfax.com | |
| mcp endpoint status | ok | The server listed 4 functions when asked. | as of probe | www.sendthisfax.com |
Where to get it
This record as data
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