{"uid":"cap_sMYMct-hTib2JW1BXkAEk","slug":"agentfax-fax-0e498a36","name":"AgentFax Send Fax","description":"Send a fax to a phone number, priced per page. Pay with MPP (USDC.e on Tempo).","url":"https://agentfax.val.run/v1/fax","method":"POST","headers":{},"bodySchema":{"type":"object","required":["to"],"properties":{"to":{"type":"string","description":"Destination fax number in E.164, e.g. +14155550123"},"file_url":{"type":"string","description":"Public URL to a PDF (provide this or content_base64)"},"metadata":{"type":"object","description":"Optional, echoed back in the response"},"file_name":{"type":"string","description":"Optional filename for content_base64"},"content_base64":{"type":"string","description":"Base64-encoded document bytes"}}},"responseSchema":{"type":"object","properties":{"id":{"type":"string","description":"Fax job id (use with GET /v1/fax/{id})"},"to":{"type":"string","description":"Destination number, echoed back"},"pages":{"type":"integer","description":"Number of pages sent"},"status":{"type":"string","description":"queued | sending | delivered | failed"},"price_usd":{"type":"string","description":"Total charged, in USD"}}},"example":null,"exampleRequest":null,"tags":["fax","documents","pdf","communication","social"],"displayCostAmount":"0.2","displayCostAsset":"USDC","priceDynamic":true,"priceHint":"$0.20/page","priceStatus":"priced","priceSource":"settled","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"dynamic","summary":"$0.20/page (dynamic)","primary":{"kind":"dynamic","protocol":"mpp","network":"tempo","amountUsd":"0.2","per":"call","confidence":"exact"},"accepted":[{"kind":"dynamic","protocol":"mpp","network":"tempo","amountUsd":"0.2","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_0HpQhUQJ7cMi5mEvOvYbD","protocol":"mpp","methodType":"crypto","chain":"tempo","mode":"charge","costAmount":"0.2","costPer":"request","priority":0,"asset":"0x20C000000000000000000000b9537d11c60E8b50","unit":"request","depositMicros":null,"planRef":null}],"brandName":"agentfax","brandSlug":"agentfax-mpp","brandBaseUrl":"https://agentfax.val.run","brandDocsUrl":"https://agentfax.val.run","whatItDoes":"Sends a fax document (PDF or base64 content) to a phone number, billed per page in USDC","exampleAgentPrompt":"Send a fax to +14155550123 with the PDF at https://example.com/contract.pdf — it's a signed contract I need delivered immediately.","exampleUseCases":null,"resultDescription":"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}.","failureModes":["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"],"whenToPreferThis":"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.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-14T18:39:23.486Z","isFirstParty":false}