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SendFaxFast (AI Fax Credits)

by sendfaxfast.com · remote · no sign-in to list tools · v1.1.0 · published by com.sendfaxfast

Send faxes from AI chat with prepaid credits (1 credit = 1 fax, up to 100 pages). PDF, JPG, PNG.

Deletes · 1Changes · 1
CompareRegistry entry

5 tools: 1 can delete or cancel things, 1 change things and 3 only read.

Scanned Oct 21, 2026

No check matched anything in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http fax-credits https://sendfaxfast.com/api/mcp-credits.php --header 'X-API-Key: <your-x-api-key>'

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

5 tools

Deletes or cancels 1Claude Code: deny
  • send_faxSend a fax using 1 prepaid credit.No findings

    Why it is in this group

    • The name "send_fax" says "send": a word for sending, and what is sent cannot be taken back.
    • The server marks it destructive (destructiveHint: true).
    Description, as the server wrote it
    Send a fax using 1 prepaid credit. Requires your credits API key (sfx_...) and a direct, publicly accessible HTTPS link to a PDF (max. 10 MB, 100 pages). Supported: USA, Canada, Australia, New Zealand and 39 more countries (same list as sendfaxfast.com); premium-rate numbers are not supported. Each call transmits a real fax to the given number. DOCUMENT (exactly one): "upload_id" from create_upload_link (for files on the user's device), "file" (a file attached in ChatGPT, filled in automatically), "document_url" (direct public HTTPS link to a PDF) or "document_base64" (tiny files only, max. 700 KB). For an attachment that is not available as "file", create_upload_link provides an upload link. The result states whether the fax was sent, scheduled or is awaiting payment.

    Annotations the server declares

    • title: Send fax (uses 1 credit)
    • readOnlyHint: false
    • destructiveHint: true
    • idempotentHint: false
    • openWorldHint: true
Changes things 1Claude Code: ask
Only reads 3Claude Code: allow
  • get_account_balanceCheck how many fax credits remain on your account.No findings

    Why it is in this group

    • The name "get_account_balance" says "get": a word for reading.
    Description, as the server wrote it
    Check how many fax credits remain on your account. Requires your credits API key (sfx_...).

    Annotations the server declares

    • title: Get credit balance
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • get_fax_priceCheck if a fax destination is supported and how many credits it costs (a flat 1 credit per fax, up to 100 pages).No findings

    Why it is in this group

    • The name "get_fax_price" says "get": a word for reading.
    Description, as the server wrote it
    Check if a fax destination is supported and how many credits it costs (a flat 1 credit per fax, up to 100 pages). No API key required. Supported: USA, Canada, Australia, New Zealand and 39 more countries (same list as sendfaxfast.com); premium-rate numbers are not supported.

    Annotations the server declares

    • title: Check fax price
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false
  • get_fax_statusCheck the delivery status of one of your faxes.No findings

    Why it is in this group

    • The name "get_fax_status" says "get": a word for reading.
    Description, as the server wrote it
    Check the delivery status of one of your faxes. Use the fax_id returned by send_fax. Requires your credits API key; only your own faxes are visible.

    Annotations the server declares

    • title: Get fax status
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: false

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 1.1.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http fax-credits https://sendfaxfast.com/api/mcp-credits.php --header 'X-API-Key: <your-x-api-key>'

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [
      "mcp__fax-credits__get_account_balance",
      "mcp__fax-credits__get_fax_price",
      "mcp__fax-credits__get_fax_status"
    ],
    "ask": [
      "mcp__fax-credits__create_upload_link"
    ],
    "deny": [
      "mcp__fax-credits__send_fax"
    ]
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as fax-credits. Review it before you use it.