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PromptFax
8 endpointsliveSend a one-off fax from inside ChatGPT or Claude. Pay-per-use, $2-$4.50 per delivered fax. (MCP server app.promptfax/promptfax, aggregated from the official registry)
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| Endpoint | What it does | Price | Health |
|---|---|---|---|
| Start PromptFax session /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 | $0.0020 per call | degraded · 279ms |
| Attach fax document /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 widge | $0.0020 per call | unknown |
| Get fax quote /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 o | $0.0020 per call | unknown |
| Open Stripe Checkout /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 ca | $0.0020 per call | unknown |
| Send paid fax /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 s | $0.0020 per call | unknown |
| Get fax status /get_status | Use this when you need the latest PromptFax workflow state, quote/payment state, or fax transmission status. | $0.0020 per call | unknown |
| Retry failed fax /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. | $0.0020 per call | unknown |
| Cancel fax send /cancel | Use this when you need to cancel the active PromptFax send. | $0.0020 per call | unknown |