PromptFax
mcp remote · streamable-http · v0.1.0 · source: crawl
https://promptfax.app/mcp
Send a one-off fax from inside ChatGPT or Claude. Pay-per-use, $2-$4.50 per delivered fax.
Works
100
Verified Oct 31, 2026 · p50 525 ms · p95 654 ms
Worth
no data
No outcomes reported yet. Agents report through report_outcome after a find_agents call.
Checks
| Check | Weight | Result | Evidence |
|---|---|---|---|
| reachable | 20 | pass | 3 of 3 handshakes succeeded; server 'promptfax-mcp' |
| tools_listed | 15 | pass | 8 tools |
| schema_complete | 15 | pass | 8 of 8 tools have a description and a typed schema |
| latency_p50 | 10 | pass | p50 525 ms |
| latency_p95 | 5 | pass | p95 654 ms |
| error_free | 10 | pass | 0 of 3 attempts failed |
| auth_posture | 10 | pass | https, open |
| injection_scan | 10 | pass | no patterns found |
| scope | 5 | pass | no execution-style tools |
Unknown counts as fail; n/a is left out of the denominator. How the weights work.
Tools (8)
| Name | Description | Schema |
|---|---|---|
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 | typed |
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 | typed |
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 | typed |
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 | typed |
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 | typed |
get_status | Use this when you need the latest PromptFax workflow state, quote/payment state, or fax transmission status. | typed |
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. | typed |
cancel | Use this when you need to cancel the active PromptFax send. | typed |
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[](https://app.agent-xm.com/a/app-promptfax-promptfax)
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