A
licenseNot graded
qualityD
maintenanceEnables AI agents to send free and paid faxes to US and Canada numbers, check fax status, and purchase prepaid credits, all without leaving the chat.
MIT
SendFaxFast (AI Fax Credits)
Server Details
Send faxes from AI chat with prepaid credits (1 credit = 1 fax, up to 100 pages). PDF, JPG, PNG.
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- Status
- Healthy
- Last Tested
- Transport
- Streamable HTTP · MCP 2025-11-25
- URL
TDQS
Score is being calculated.
Available Tools
5 toolscreate_upload_linkCreate upload linkInspect
Creates 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 sends nothing and costs nothing.
ParametersJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
No parameters | |||
get_account_balanceGet credit balanceRead-onlyIdempotentInspect
Check how many fax credits remain on your account. Requires your credits API key (sfx_...).
ParametersJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
No parameters | |||
get_fax_priceCheck fax priceRead-onlyIdempotentInspect
Check 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.
ParametersJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| fax_number | Yes | Recipient fax number in E.164 format (e.g. +12125550100 for USA, +61212345678 for Australia, +911123456789 for India) |
get_fax_statusGet fax statusRead-onlyIdempotentInspect
Check 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.
ParametersJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| fax_id | Yes | Fax ID returned by send_fax |
send_faxSend fax (uses 1 credit)DestructiveInspect
Send 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_upload_link (for files on the user's device), "file" (a file attached in ChatGPT, filled in automatically), "document_url" (direct public HTTPS link to a PDF) or "document_base64" (tiny files only, max. 700 KB). For an attachment that is not available as "file", create_upload_link provides an upload link. The result states whether the fax was sent, scheduled or is awaiting payment.
ParametersJSON Schema
| Name | Required | Description | Default |
|---|---|---|---|
| file | No | ChatGPT: the fax document the user attached in the chat (PDF, JPG or PNG). Filled in automatically by ChatGPT. | |
| upload_id | No | upload_id returned by create_upload_link (after the user uploaded the file). One-time use. | |
| fax_number | Yes | Recipient fax number in E.164 format (e.g. +12125550100) | |
| document_url | No | Direct, publicly accessible HTTPS URL of the PDF document to fax (no login or preview pages) Alternative to upload_id / file. | |
| document_name | No | Optional: original file name of the document (e.g. "invoice.pdf"), shown on the transmission report. Not needed with upload_id or file. | |
| document_base64 | No | Only for very small files (max. 700 KB): the PDF, JPG or PNG as base64 or data: URI. Prefer create_upload_link. |
Tool Schema Changelog
Recent tool additions, removals, and schema changes observed during successful MCP inspections.
5 tool updates
- First observed
create_upload_link - First observed
get_account_balance - First observed
get_fax_price - First observed
get_fax_status - First observed
send_fax
Related MCP Connectors
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61Send real faxes from AI chat. PDF, JPG or PNG. Pay per fax via Stripe link. US, CA, AU, NZ + 39
61Send a fax from AI. Pay per fax. No registration or subscription. Pay only for successful faxes.
Send real faxes from AI chat (DE/AT + 40 countries). PDF, JPG, photo. Pay per fax via Stripe.
41
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