Send a fax to any US or Canada number. 10¢ a page, no subscription, no account needed first.
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How a fax set up with send_fax is going: waiting for payment, sending, trying again, delivered, or why it didn’t go through.
The code send_fax returned (the end of the link).
Pick your client. Values in capitals, like YOUR_TOKEN, are yours to fill in.
claude mcp add --transport http faxwell https://api.sendfaxwell.com/mcp
How a fax set up with send_fax is going: waiting for payment, sending, trying again, delivered, or why it didn’t go through.
| Argument | Type | Description |
|---|---|---|
| code* | string | The code send_fax returned (the end of the link). |
{
"type": "object",
"required": [
"code"
],
"properties": {
"code": {
"type": "string",
"description": "The code send_fax returned (the end of the link)."
}
},
"additionalProperties": false
}Send a fax to a US or Canada fax number with Faxwell (10¢ a page, no subscription, no account needed first). Give the document as base64 (PDF, PNG or JPEG), as a public https link to one, or as the plain text of a letter you wrote. This prepares the fax and returns a link for the user: they check it and pay (Apple Pay, Google Pay or card) or use page credits they already have, and it sends automatically. Nothing is sent or charged before that. If you can’t pass the file, call this with just the number: the user can add the document at the link.
| Argument | Type | Description |
|---|---|---|
| to* | string | The fax number, US or Canada, e.g. "(503) 555-0147" or "+15035550147". |
| text | string | The text of a letter to fax, if there is no file. Faxwell sets it on letter-size pages. |
| document_url | string | A public https link to a PDF, PNG or JPEG. |
| document_base64 | string | The document, base64-encoded: a PDF, PNG or JPEG. |
{
"type": "object",
"required": [
"to"
],
"properties": {
"to": {
"type": "string",
"description": "The fax number, US or Canada, e.g. \"(503) 555-0147\" or \"+15035550147\"."
},
"text": {
"type": "string",
"description": "The text of a letter to fax, if there is no file. Faxwell sets it on letter-size pages."
},
"document_url": {
"type": "string",
"description": "A public https link to a PDF, PNG or JPEG."
},
"document_base64": {
"type": "string",
"description": "The document, base64-encoded: a PDF, PNG or JPEG."
}
},
"additionalProperties": false
}We read every tool's name, description and inputs the way the model will, looking for instructions hidden from you. A clean result means no warning signs, not a guarantee. Scanned Nov 3, 2026.