SendThisFax

com.sendthisfax/faxVersion 1.0.0

Send real faxes to EU institutions: pay per fax via checkout link or prepaid API key.

Status

Responds218 msNov 14, 2026, 14:14 UTCAnswered our handshake without sign-in.

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Last checked: Nov 14, 2026, 14:14 UTC
Latency: 218 ms
Remotes responding: 1 of 1
Sign-in: No sign-in
Hosting: Hosted outside the EU (detected)
Registry data as of: Nov 14, 2026, 22:14 UTC

Data from the official MCP Registry, checked by run.zero. How we check

Connect

Streamable HTTP

https://www.sendthisfax.com/mcpResponds218 msNov 14, 2026, 14:14 UTC

No sign-in

Claude Code

claude mcp add --transport http fax https://www.sendthisfax.com/mcp

Claude Desktop and claude.ai

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Settings > Connectors > Add custom connector
Name: fax
Remote MCP server URL: https://www.sendthisfax.com/mcp

Cursor

{
  "mcpServers": {
    "fax": {
      "url": "https://www.sendthisfax.com/mcp"
    }
  }
}

VS Code

code --add-mcp '{"name":"fax","type":"http","url":"https://www.sendthisfax.com/mcp"}'

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Tools

4 tools

Tools of SendThisFax
	Description		Read-only	Idempotent	Open world
`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 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.	Not declared	Yes	Not declared	No
`get_fax_status`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.	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.	Not declared	Yes	Not declared	No
`get_price`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).	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).	Not declared	Yes	Not declared	No
`send_fax`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.	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.	No	No	No	Yes

Details

Registry status: Active
Published: Jul 8, 2026
Updated: Jul 8, 2026
Website: https://www.sendthisfax.com/en/mcp⁠ (opens in a new tab)
Repository: Not given
Categories (suggested): E-commerceSuggested categories are assigned automatically from the registry text and may be wrong. Verified operators can correct them.
GDPR: Not declared

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