Someone sent the first customer fax via ChatGPT over Onetime Fax's new MCP server
tdhopper · x · 2026-10-26
Onetime Fax launched an MCP server (https://app.onetimefax.com/mcp), and someone promptly used it with ChatGPT to send the company's first customer fax via MCP.
How it works:
- The assistant can draft a fax, attach documents, and show recipient, files, page count and price; the send only happens after user approval
- Uses the same account and prepaid credits as the developer API; drafts and quotes are free, sending spends credits
- Files up to 25MB; clients without attachment support can pass a public HTTPS link (with privacy caveats)
A neat example of MCP making even legacy services agent-operable.
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