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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Tools
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
filesarrayOptional host-supplied files for initial attachment. ChatGPT may provide temporary download URLs in files[].download_url.
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.
faxNumberstringDestination US fax number. Accepts common human formats such as 415-555-0182 or E.164 format such as +14155550182.
sessionIdstringPromptFax MCP session identifier returned by start_session. Use this to continue a session-backed fax workflow.
hostCapabilitiesobjectOptional host capability hints, such as whether the client supports widgets, file-picking, hosted links, or other interactive surfaces.
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
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.
documentIdstringPromptFax document identifier created by a prior upload or hosted session.
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
fileUrlsarrayOne or more HTTPS URLs for PDF or image documents that PromptFax should attach to the fax workflow.
faxNumberstringDestination US fax number. Accepts common human formats such as 415-555-0182 or E.164 format such as +14155550182.
sessionIdstringPromptFax MCP session identifier returned by start_session. Use this to continue a session-backed fax workflow.
documentIdstringPromptFax document identifier created by a prior upload or hosted session.
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
sessionIdstringPromptFax MCP session identifier returned by start_session. Use this to continue a session-backed fax workflow.
sendIntentIdstringPromptFax send intent identifier returned by get_quote or session status. Use this for checkout, send, status, retry, or cancel operations.
autoSendAfterAuthorizationbooleanWhen true, PromptFax sends automatically after Stripe confirms payment authorization. When false, call send_fax after authorization.
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
sessionIdstringPromptFax MCP session identifier returned by start_session. Use this to continue a session-backed fax workflow.
sendIntentIdstringPromptFax send intent identifier returned by get_quote or session status. Use this for checkout, send, status, retry, or cancel operations.
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
sessionIdstringPromptFax MCP session identifier returned by start_session. Use this to continue a session-backed fax workflow.
sendIntentIdstringPromptFax send intent identifier returned by get_quote or session status. Use this for checkout, send, status, retry, or cancel operations.
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
sessionIdstringPromptFax MCP session identifier returned by start_session. Use this to continue a session-backed fax workflow.
sendIntentIdstringPromptFax send intent identifier returned by get_quote or session status. Use this for checkout, send, status, retry, or cancel operations.
cancelCancel the active PromptFax send when cancellation is still possible.2 params
Cancel the active PromptFax send when cancellation is still possible.
Parameters* required
sessionIdstringPromptFax MCP session identifier returned by start_session. Use this to continue a session-backed fax workflow.
sendIntentIdstringPromptFax send intent identifier returned by get_quote or session status. Use this for checkout, send, status, retry, or cancel operations.
Featured
Keep your Mac awake while Claude Code and 40+ AI agents run. Sleeps when they're idle.
One time payment $9 →Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →On Capafy, your Skill runs online 24/7 as an agent product, and you get paid every time someone uses it.
Start earning →