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AgentFax Send Fax
faxdocumentspdfcommunicationsocial
AgentFax Send Fax is a paid API for AI agents from agentfax at agentfax.val.run, paid per call via MPP, $0.20/page (dynamic), status unknown (last checked 2026-09-14).
Sends a fax document (PDF or base64 content) to a phone number, billed per page in USDC
Price$0.20/pagevaries by input
Success—
StatusUnknown
How this service works
Send a fax to a phone number, priced per page. Pay with MPP (USDC.e on Tempo).
Output
Returns a fax job object with a unique job ID, the destination number echoed back, number of pages transmitted, current status (queued/sending/delivered/failed), and total cost in USD. The job ID can be used to poll the fax status via GET /v1/fax/{id}.
Example use cases
Example prompt
“Send a fax to +14155550123 with the PDF at https://example.com/contract.pdf — it's a signed contract I need delivered immediately.”
Technical details
Endpoint
POSThttps://agentfax.val.run/v1/faxWhen to prefer
Choose this endpoint when you need to programmatically send a fax to any phone number without API keys or signup, especially in automated agent workflows. It is pay-per-use (per page) with no subscription, accepts either a public PDF URL or base64-encoded content, and documents are never stored. Ideal for compliance workflows, legal document delivery, or any scenario requiring fax transmission from an AI agent.
Side effects
- Invalid or unreachable fax number — fax fails with 'failed' status
- Neither file_url nor content_base64 provided — request rejected
- Malformed E.164 phone number — validation error
- PDF URL is not publicly accessible — document fetch failure
- Insufficient USDC balance to cover per-page cost — payment failure
- Document is corrupt or unsupported format — processing error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| torequired | string | Destination fax number in E.164, e.g. +14155550123 |
| file_url | string | Public URL to a PDF (provide this or content_base64) |
| metadata | object | Optional, echoed back in the response |
| file_name | string | Optional filename for content_base64 |
| content_base64 | string | Base64-encoded document bytes |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| id | string | Fax job id (use with GET /v1/fax/{id}) |
| to | string | Destination number, echoed back |
| pages | integer | Number of pages sent |
| status | string | queued | sending | delivered | failed |
| price_usd | string | Total charged, in USD |
Tags
faxdocumentspdfcommunicationsocial
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