About FaxOnline
Prepare and track US PDF faxes with user-approved checkout. No account or subscription
Configuration
Remote servers need no local install. Pick your client, then copy the config or install in one click.
https://faxonline.app/mcp/faxclaude mcp add --transport http abrudtkuhl-faxonline https://faxonline.app/mcp/fax{"mcpServers":{"abrudtkuhl-faxonline":{"type":"http","url":"https://faxonline.app/mcp/fax"}}}Open in Cursor{"servers":{"abrudtkuhl-faxonline":{"type":"http","url":"https://faxonline.app/mcp/fax"}}}Open in VS Code{"mcpServers":{"abrudtkuhl-faxonline":{"type":"http","url":"https://faxonline.app/mcp/fax"}}}{"mcpServers":{"abrudtkuhl-faxonline":{"serverUrl":"https://faxonline.app/mcp/fax"}}}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
2| Parameter | Type | Required | Description |
|---|---|---|---|
| string | Yes | Email address for delivery notifications. | |
| filename | string | Yes | PDF filename without directory paths. |
| fax_number | string | Yes | US destination fax number: 10 digits (5155551234), optionally prefixed with 1 or +1 (+15155551234). Common formatting such as (515) 555-1234 is accepted. |
| draft_token | string | Yes | A secret, cryptographically random 64-character lowercase hex token. Reuse for retries and status checks. |
| document_base64 | string | Yes | Standard base64 of the PDF bytes, without a data URL prefix; maximum decoded size 10 MiB. |
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.