PromptFax
app.promptfax/promptfax
8 toolsHTTPregistry active
Summary
This connects Claude or ChatGPT to PromptFax's fax delivery service, letting you send actual faxes without leaving your chat session. You'd reach for this when you need to file something with a government office, send documents to a medical provider, or hit any other institution that still requires faxed submissions. It's pay per use at $2 to $4.50 per delivered fax, so you're not paying for a subscription to handle occasional fax requirements. The server exposes fax sending operations through a streamable HTTP transport, handling the conversion and delivery while you stay in your workflow.
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Public tool metadata for what this MCP can expose to an agent.
8 tools
start_sessionCreate or resume a PromptFax MCP session. Use this first when a user wants to send or price a fax.6 params
Create or resume a PromptFax MCP session. Use this first when a user wants to send or price a fax.
Parameters* required
faxNumberstringDestination US fax number. Accepts common human formats such as 415-555-0182 or E.164 format such as +14155550182.
filesarrayOptional host-supplied files for initial attachment. ChatGPT may provide temporary download URLs in files[].download_url.
hostCapabilitiesobjectOptional host capability hints, such as whether the client supports widgets, file-picking, hosted links, or other interactive surfaces.
hostTypestringIdentify the MCP host so PromptFax can choose the right interaction mode. Use chatgpt for ChatGPT, claude for Claude, browser for a browser-hosted app, or other for unknown clients.
metadataobjectOptional host-specific metadata for diagnostics or session continuity.
sessionIdstringPromptFax MCP session identifier returned by start_session. Use this to continue a session-backed fax workflow.
attach_documentBind a PromptFax document or one or more HTTPS PDF URLs into the current MCP session before requesting a quote.3 params
Bind a PromptFax document or one or more HTTPS PDF URLs into the current MCP session before requesting a quote.
Parameters* required
documentIdstringPromptFax document identifier created by a prior upload or hosted session.
fileUrlsarrayOne or more HTTPS URLs for PDF or image documents that PromptFax should attach to the fax workflow.
sessionIdstringPromptFax MCP session identifier returned by start_session. Use this to continue a session-backed fax workflow.
get_quoteCreate 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.4 params
Create 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.
Parameters* required
documentIdstringPromptFax document identifier created by a prior upload or hosted session.
faxNumberstringDestination US fax number. Accepts common human formats such as 415-555-0182 or E.164 format such as +14155550182.
fileUrlsarrayOne or more HTTPS URLs for PDF or image documents that PromptFax should attach to the fax workflow.
sessionIdstringPromptFax MCP session identifier returned by start_session. Use this to continue a session-backed fax workflow.
checkoutStart external Stripe Checkout after the user accepts a pay-per-use quote.3 params
Start external Stripe Checkout after the user accepts a pay-per-use quote.
Parameters* required
autoSendAfterAuthorizationbooleanWhen true, PromptFax sends automatically after Stripe confirms payment authorization. When false, call send_fax after authorization.
sendIntentIdstringPromptFax send intent identifier returned by get_quote or session status. Use this for checkout, send, status, retry, or cancel operations.
sessionIdstringPromptFax MCP session identifier returned by start_session. Use this to continue a session-backed fax workflow.
send_faxQueue a paid fax for transmission after payment is authorized and the user explicitly wants to send now.2 params
Queue a paid fax for transmission after payment is authorized and the user explicitly wants to send now.
Parameters* required
sendIntentIdstringPromptFax send intent identifier returned by get_quote or session status. Use this for checkout, send, status, retry, or cancel operations.
sessionIdstringPromptFax MCP session identifier returned by start_session. Use this to continue a session-backed fax workflow.
get_statusFetch the latest PromptFax workflow state, quote/payment state, or fax transmission status.2 params
Fetch the latest PromptFax workflow state, quote/payment state, or fax transmission status.
Parameters* required
sendIntentIdstringPromptFax send intent identifier returned by get_quote or session status. Use this for checkout, send, status, retry, or cancel operations.
sessionIdstringPromptFax MCP session identifier returned by start_session. Use this to continue a session-backed fax workflow.
retry_failed_faxPrepare a retry flow after a retry-eligible failed fax.2 params
Prepare a retry flow after a retry-eligible failed fax.
Parameters* required
sendIntentIdstringPromptFax send intent identifier returned by get_quote or session status. Use this for checkout, send, status, retry, or cancel operations.
sessionIdstringPromptFax MCP session identifier returned by start_session. Use this to continue a session-backed fax workflow.
cancelCancel the active PromptFax send when cancellation is still possible.2 params
Cancel the active PromptFax send when cancellation is still possible.
Parameters* required
sendIntentIdstringPromptFax send intent identifier returned by get_quote or session status. Use this for checkout, send, status, retry, or cancel operations.
sessionIdstringPromptFax MCP session identifier returned by start_session. Use this to continue a session-backed fax workflow.
Featured
Keeps your Mac awake while Claude Code, Codex or Cursor works. Lets it sleep when they are done.
Try free for 7 days →Block distracting apps from your iPhone permanently without a 3rd party app. Free and open source.
Block now (100% free) →Notes, actions and memory. Without a meeting bot. First month 100% off.
Download for free →belt cli automatically finds the best tools and skills for your agent. image, video, music, tts...
one prompt install →Free an open-source skills that make AI coding agents easier to understand, verify, and control.
Download for free →Connect your Claude agent to live crypto prices and trading routes via 1inch
Get the MCP →