app.promptfax/promptfax · v0.1.0 · finance-and-payments
PromptFax is healthy: it completed an MCP handshake in 1150 ms and exposes 8 tools.
Send a one-off fax from inside ChatGPT or Claude. Pay-per-use, $2-$4.50 per delivered fax.
Endpoint: https://promptfax.app/mcp (streamable-http)
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| Users (last 30 days) | 0 |
| Handshake | Healthy |
| Auth needed | None |
| Tool count | 8 |
| Latency | 1150 ms |
| Last checked (UTC) | 2026-10-17T00:20:39.228Z |
| Checked (UTC) | Status | Latency | Error |
|---|---|---|---|
| 2026-10-17T00:20:39.228Z | Healthy | 1150 | |
| 2026-10-15T17:30:10.165Z | Healthy | 1905 | |
| 2026-10-14T16:45:46.609Z | Healthy | 2777 |
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. |