ProntoFax is now in the Claude directory. Fax from a chat.

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Directory Send a fax

Send a fax from Cursor

Add ProntoFax to Cursor and ask the agent to fax a document. You finish on prontofax.com, and you pay $2.99 only when the fax is delivered. No account and no API key.

Add to Cursor

Prefer to add it by hand? The config is on prontofax.com/mcp.

How it works

1

Add ProntoFax. Click the button and confirm in Cursor. That adds the hosted ProntoFax server to your MCP settings.

2

Ask the agent. Try “Fax this PDF to 555-555-5555” or “What number do I fax MassHealth to?” For government agencies the agent looks the number up in the ProntoFax directory and shows the official source and the date it was last verified.

3

Finish on prontofax.com. The agent gives you a link with the number filled in. Add your pages from a PDF or photos, add a cover page if you want one, and pay.

4

Pay when it arrives. $2.99 flat for up to 25 pages, charged only when delivery is confirmed. If the fax does not go through, you are not charged. A confirmation with the time and page count goes to your email.

What you should know

  • Your documents never pass through the agent. You upload them on prontofax.com. The agent only sees that a fax was started.
  • We do not keep your documents. Original photos are deleted as soon as they are processed, uploaded PDFs and processed pages within two days, and the fax document about 30 days after you send it. The delivery record stays as your proof of transmission. Details on our security page.
  • It never guesses a number. The directory covers Social Security field offices in every state, state unemployment and Medicaid agencies, MassHealth, the IRS by form, FEMA and more, each with its official source and verified date. When there is no verified number for an office, the agent uses the one printed on your letter.
  • It sends faxes only. ProntoFax does not receive them.

Questions

Do I need a ProntoFax account?

No. You pay by card for the fax you send.

Can the agent fax a file from my project directly?

Not yet. You add the file on prontofax.com.

Does it work in other coding agents?

Yes. Any agent that supports remote MCP servers can use it. Setup for Claude Code and VS Code is on prontofax.com/mcp.

Add to Cursor

Details for developers at prontofax.com/mcp.