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100
MCP live MCP 2025-11-25 streamable-http

PromptFax

app.promptfax/promptfax

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

Uptime
100.0%
2 direct probes · 30d
Response
838ms
last probe
Tools
8
callable
Resources
0
readable
Prompts
0
available
Primary URL
https://promptfax.app/mcp

Tools · 8

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 …

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 con…

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 re…

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-confirm…

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 unavai…

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.

How to use

Add to your Claude Desktop / Cursor / Cline MCP config:

{
  "mcpServers": {
    "promptfax": {
      "url": "https://promptfax.app/mcp",
      "transport": "streamable-http"
    }
  }
}