SendFaxFast (AI Fax Credits)
Send faxes from AI chat with prepaid credits (1 credit = 1 fax, up to 100 pages). PDF, JPG, PNG.
Connect it
Settings → Connectors → Add custom connector
URL: https://sendfaxfast.com/api/mcp-credits.phpSettings → Apps & Connectors → Advanced → Developer mode
Create connector with URL: https://sendfaxfast.com/api/mcp-credits.php{
"mcpServers": {
"fax-credits": {
"url": "https://sendfaxfast.com/api/mcp-credits.php",
"headers": {
"X-API-Key": "<YOUR_X_API_KEY>"
}
}
}
}claude mcp add --transport http fax-credits https://sendfaxfast.com/api/mcp-credits.php --header "X-API-Key: <value>"{
"servers": {
"fax-credits": {
"type": "http",
"url": "https://sendfaxfast.com/api/mcp-credits.php",
"headers": {
"X-API-Key": "<YOUR_X_API_KEY>"
}
}
}
}5 tools, verified live
get_account_balanceread-onlyCheck how many fax credits remain on your account. Requires your credits API key (sfx_...).
get_fax_priceread-onlyCheck if a fax destination is supported and how many credits it costs (a flat 1 credit per fax, up to 100 pages). No API key required. Supported: USA, Canada, Australia, New Zealand and 39 more countries (same list as sendfaxfast.com); premium-rate numbers are not supported.
send_faxcan modifySend a fax using 1 prepaid credit. Requires your credits API key (sfx_...) and a direct, publicly accessible HTTPS link to a PDF (max. 10 MB, 100 pages). Supported: USA, Canada, Australia, New Zealand and 39 more countries (same list as sendfaxfast.com); premium-rate numbers are not supported. Each call transmits a real fax to the given number. DOCUMENT (exactly one): "upload_id" from create_uploa
get_fax_statusread-onlyCheck the delivery status of one of your faxes. Use the fax_id returned by send_fax. Requires your credits API key; only your own faxes are visible.
create_upload_linkCreates a secure one-time upload link (valid 30 minutes) for the fax document (PDF, JPG or PNG, max. 10 MB) – upload from phone or computer by drag & drop, file picker or camera. For files on the user's device, or chat attachments that are not available as send_fax's "file" parameter. The user opens upload_url and uploads the file; send_fax then accepts the returned upload_id. Creating a link send
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