Docs

Outbound fax for US and Canada — from a browser, REST, CLI, or MCP.

Oh Fax turns sending a fax into one action: give it a number and a PDF, pay, get a delivery receipt. No account for the consumer browser flow or for agents paying via MPP (HTTP 402 / payment_link). Developers who want the REST API or CLI use a prepaid balance and API key from Account.

Surfaces

• Send — one-off human fax in the browser (no account).
• Account — Google sign-in, top-up, API keys, MCP URL, webhooks.
• REST API — quote → send → status → receipt.
• MCP — quote_fax, send_fax, get_fax_status, get_fax_receipt.
• CLI — ohfax quote|send|status|receipt.

Start here

• Quickstart — browser, Account + key, or MCP in one command.
• Open Send — drop a PDF and pay.
• Open Account — create a key after Google sign-in.
• Common questions — direct answers, including can an AI agent send a fax.

Next: Quickstart