PromptFax
RemoteAbout PromptFax
Send a one-off fax from inside ChatGPT or Claude. Pay-per-use, $2-$4.50 per delivered fax.
Configuration
Remote servers need no local install. Pick your client, then copy the config or install in one click.
https://promptfax.app/mcpclaude mcp add --transport http app-promptfax-promptfax https://promptfax.app/mcp{"mcpServers":{"app-promptfax-promptfax":{"type":"http","url":"https://promptfax.app/mcp"}}}Open in Cursor{"servers":{"app-promptfax-promptfax":{"type":"http","url":"https://promptfax.app/mcp"}}}Open in VS Code{"mcpServers":{"app-promptfax-promptfax":{"type":"http","url":"https://promptfax.app/mcp"}}}{"mcpServers":{"app-promptfax-promptfax":{"serverUrl":"https://promptfax.app/mcp"}}}Run commands in a terminal; paste JSON into the client’s MCP config and restart. Servers that need sign-in will prompt on first connect.
Tools
8| Parameter | Type | Required | Description |
|---|---|---|---|
| files | array | No | Optional host-supplied files for initial attachment. ChatGPT file parameters include files[].download_url and files[].file_id. |
| hostType | string | No | Identify 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. |
| metadata | object | No | Optional host-specific metadata for diagnostics or session continuity. |
| faxNumber | string | No | Destination US fax number. Accepts common human formats such as 415-555-0182 or E.164 format such as +14155550182. |
| sessionId | string | No | PromptFax MCP session identifier returned by start_session. Use this to continue a session-backed fax workflow. |
| hostCapabilities | object | No | Optional host capability hints, such as whether the client supports widgets, file-picking, hosted links, or other interactive surfaces. |
Details
The maintainer has not added details yet. Check the README in the repository.
Comments
New to MCP?
From what the protocol is to installing your first server, these answers cover most first questions.
An open protocol that defines how AI applications connect to external tools and data in a uniform way. Clients talk to the model; MCP servers provide tools, resources and prompt templates. They exchange standard messages, so one server can be reused by many clients.