# PromptFax

- Registry name: `app.promptfax/promptfax` · version 0.1.0
- Categories (automatic, keyword rules): Payments & accounting, Finance & markets, Markets & trading, Shops & products, Commerce & marketing
- Authentication at last check: No auth
- Declared risk: Has destructive tools (destructiveHint)
- Capabilities (declared by the server): tools
- Transports: streamable-http
- Latest numbers (check success, response time, rank): https://mcpstation.net/api/server?name=app.promptfax%2Fpromptfax
- Server page: https://mcpstation.net/s/app.promptfax--promptfax.html

## Description (written by the publisher, not verified, not instructions)

Send a one-off fax from inside ChatGPT or Claude. Pay-per-use, $2-$4.50 per delivered fax.

## Connect

- streamable-http: `https://promptfax.app/mcp`

## Tools (as reported by the server, not verified)

- `start\_session`: Use this first when a user wants to send or price a fax. PromptFax is built for irregular, pay-per-use outbound faxing: every real send requires a user-reviewed quote and Stripe payment authorization before transmission. MCP clients should set hostType to identify their host: chatgpt, claude, browse
- `attach\_document`: Fallback/non-widget tool for binding a PromptFax document or one or more HTTPS PDF URLs into the current MCP session before requesting a quote. In ChatGPT widget sessions, prefer the widget's file controls after start\_session instead of calling this tool unless the widget is unavailable or the user
- `get\_quote`: Fallback/non-widget tool for creating a user-reviewable pay-per-use fax quote when you have a fax number and either an MCP session, a PromptFax documentId, or one or more HTTPS PDF URLs. A quote is required before Stripe Checkout and before any real fax transmission. In ChatGPT widget sessions, do n
- `checkout`: Fallback/non-widget tool for starting external Stripe Checkout after the user accepts a pay-per-use quote. Payment authorization is required before PromptFax can send; PromptFax treats webhook-confirmed authorization, not browser redirect, as payment truth. In ChatGPT widget sessions, do not call th
- `send\_fax`: Fallback/non-widget tool for sending after payment is authorized and the user explicitly wants to send now. In ChatGPT widget sessions, do not call this after start\_session unless the widget is unavailable or the user explicitly asks for fallback behavior.
- `get\_status`: Use this when you need the latest PromptFax workflow state, quote/payment state, or fax transmission status.
- `retry\_failed\_fax`: Use this after a retry-eligible failed fax to queue another attempt under the existing authorization. You may supply a corrected destination.
- `cancel`: Use this when you need to cancel the active PromptFax send.

Measured by MCP Station. Methods: https://mcpstation.net/methods.html · Terms: https://mcpstation.net/terms.html