Your agent can send a fax. Now it can prove it.
A fax API, a hosted MCP server and SDKs. Your agent prepares, quotes, gets approval, sends, receives and reconciles, inside the permissions and the budget you set. Every job ends with a record you can check.
- Job
- fax_019a2f3b7c1d7a2e9f00c4b2d7e8a1f6
- To
- +1 415 555 0142
- From
- +1 628 555 0199
- Pages
- 3 of 3
- Provider ref
- TX-88f2a1
- Document sha256
- 9b1c4e2a...
- Amount captured
- $0.117
- Timestamp
- 2026-10-28 14:02:31 UTC
How a job runs
- 01 / Prepare
Upload a PDF or an image, or post text, Markdown or HTML. The API renders and validates it and records its sha256.
- 02 / Quote
A price before the send, from a versioned rate table. The quote binds the document, the destination, the sender and the amount for ten minutes.
- 03 / Approve
A person approves that exact send, or a delegated policy written in advance allows it. Any change to the document invalidates the approval.
- 04 / Send
Bounded retries on busy and no answer. A circuit breaker per route. The wallet holds the amount until the outcome is known.
- 05 / Receive
A private inbox behind signed URLs. The text of a received fax is listed as untrusted data on every result.
- 06 / Reconcile
Six states: queued, active, partial, failed, unknown, delivered. The word delivered is written only with the provider's evidence on the attempt.
Built for agents
- A hosted MCP server with 15 tools at
https://mcp.faxforagents.com/mcp/, and a REST API athttps://api.faxforagents.com/v1. - Approvals and budgets are evaluated on the server, never from prompt text. An agent cannot widen its own permissions.
- Signed webhooks with event ids. An
Idempotency-Keyon every mutating call, so a retry returns the same job. - The sandbox is free. Every outcome, from delivered to unknown, can be rehearsed with a test API key before real money moves.
- Documents are private, kept 30 days by default, processed in the EU, and deletable by the owner.
How the authorization model works and what the MCP server exposes.
Connect your assistant in one paste
Paste one line into ChatGPT, Claude, a coding agent or a framework. Your assistant reads a page written for assistants, connects to the hosted server and sends a first fax in the free sandbox. No key to copy.
Read https://faxforagents.com/setup.md and set up Fax for Agents for me. Start in Sandbox.Prices
- $0.039per page sent
- $0.019per page received
- $2per number per month
- OptionalAgent workspace, $19 per month
Prepaid wallet, $10 minimum top-up. United States and Canada prices as of 2026-10-28. International rates are in the rate table. The sandbox is free.
What this is not
Not a HIPAA service. Protected health information is out of scope and the acceptable use policy says so.
Not an online fax service for people. It is an API, an MCP server and SDKs for software.
Not every format. PDF, PNG, JPG and TIFF uploads, and text, Markdown and HTML rendered to PDF. No office formats.
Not every country. Inbound numbers in the United States, Canada, Puerto Rico and the US Virgin Islands at launch. International send rates are listed on the coverage page and a country is marked verified only after a real fax reached it.