Send a fax from your browser.

Drop in a PDF, see the exact price, pay once, get a delivery receipt. No account. No subscription.

From $1.24 · US/CA · PDF

Send a fax now

Building an agent or integrating an API?

How it works

  1. Upload a PDF — drag or choose a file (US/CA, 10 MB / 30 pages max.).
  2. Enter the fax number — United States or Canada.
  3. See the exact price — $0.99 + $0.25 per page, before you pay.
  4. Pay once — card checkout; that amount is the only charge.
  5. Get a receipt — track delivery; full refund if undeliverable.

Send a fax now

What you can count on

Pay once. Track delivery. Refunded if it can’t go through.

Delivery in minutes Normally transmitted within a few minutes of payment. Track progress and get a receipt.
Refund if undeliverable Busy line, no answer, or not a fax — full refund and a clear reason.
Docs deleted in 24h Document bytes are removed after a final state. Transaction metadata stays; contents do not.

Pricing

$0.99 + $0.25 / page

Pay per fax. No subscription, no monthly minimum. The full price is shown before you pay, and it is the only amount charged.

DocumentTotal
1 page$1.24
3 pages$1.74
5 pages$2.24
10 pages$3.49
30 pages (maximum)$8.49

Full details in docs — US/CA · PDF · 10 MB / 30 pages · USD.

Send a fax now

Agents & API

Same product, for software. Browser send stays above — this is optional.

Agents

No Oh Fax account or API key for MPP. Use an MPP-capable payer (mppx or an agent wallet). Quote free, then pay the HTTP 402 on https://app.ohfax.com/pay (Machine Payments Protocol / MPP). Agents discover the endpoint at OpenAPI discovery.

Claude Code

claude mcp add --transport http ohfax https://app.ohfax.com/mcp
Cursor, Codex, Muse Code, and any MCP client

Cursor

Add to .cursor/mcp.json or Settings → MCP:

{
  "mcpServers": {
    "ohfax": {
      "url": "https://app.ohfax.com/mcp"
    }
  }
}

Codex

codex mcp add ohfax --url https://app.ohfax.com/mcp

For manual configuration, set url = "https://app.ohfax.com/mcp" under [mcp_servers.ohfax] in ~/.codex/config.toml. The remote URL uses streamable HTTP.

Muse Code

Add to ~/.config/muse/settings.json:

{
  "schema_version": 1,
  "mcp_servers": {
    "ohfax": {
      "transport": "streamable_http",
      "url": "https://app.ohfax.com/mcp",
      "mode": "optional"
    }
  }
}

Any MCP client

Remote URL: https://app.ohfax.com/mcp (streamable HTTP). No API key for the MPP path; use an MPP-capable payer such as mppx or an agent wallet.

Agent guide (llms.txt)

MPP docs →

API

Create a key at Account after Google sign-in. Prepaid balance; quote free, send charged.

Open Account → API docs →