The SingleFax MCP server,
connected in one click.
Send a fax from Claude, ChatGPT, or Cursor. Upload a PDF, pay, get delivery status. Connect the official SingleFax MCP server to Claude, ChatGPT, or Cursor through gate — one gateway URL, no config files, security-checked.
Free to start · No credit card · No hosting needed
Add SingleFax to your AI in one minute
Pick your client. Copy, paste, done — or let gate handle sign-ins and policies for you.
claude mcp add --transport http singlefax https://singlefax.com/mcpRun in your terminal, then restart Claude Code.
SingleFax · https://singlefax.com/mcp
What your AI can do with SingleFax
Real prompts you can type the moment it's connected — no setup, no docs to read.
“Use “list_skus”: Catalog of SingleFax SKUs with prices. MCP can check out credit_pack, inbound_30day, subscriptions, and lifetime numbers. Send a PDF with cr.”
“Use “quote_fax”: Retail send quote without charging. Pass to (E.164). Optional pages (default 10) or base64 of the PDF for a live page count.”
“Use “get_credits”: Read prepaid credit balance.”
“Use “get_fax_status”: Get fulfillment/payment status for a fax order you own.”
How secure is the SingleFax MCP server?
Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how SingleFax holds up.
Official endpoint
Operated by SingleFax (singlefax.com) at its documented MCP endpoint — not a third-party mirror or community re-host.
No sign-in needed
This server only exposes public data — no account and no credentials are involved when you connect.
Scanned before it goes live
gate checks every tool for prompt injection, hidden instructions, data-exfiltration hints, and over-broad permissions before the server is available through your gateway.
Watched for drift
If SingleFax adds or changes tools later, gate re-scans and alerts you — before your AI acts on the change.
Connected in three steps
Connect your gate
Add one gateway URL to Claude, ChatGPT, or any MCP client. One-time setup, about two minutes.
Pick SingleFax
Choose SingleFax in the gate directory. No sign-in needed.
Use it anywhere
SingleFax's tools are live in every AI client you've connected — with rules and logging built in.
Free to start · No credit card · No hosting needed
The actual tools SingleFax exposes
Fetched live from the official endpoint and re-checked daily by gate — not marketing copy.
list_skus — Catalog of SingleFax SKUs with prices. MCP can check out credit_pack, inbound_30day, subscriptions, and lifetime numbers. Send a PDF with cr
quote_fax — Retail send quote without charging. Pass to (E.164). Optional pages (default 10) or base64 of the PDF for a live page count.
get_credits — Read prepaid credit balance
get_fax_status — Get fulfillment/payment status for a fax order you own
create_upload — Optional. Prefer create_fax_draft with base64. Pass base64 here to store the file on this authenticated call (no PUT). Without base64, retur
create_fax_draft — Send a fax from this authenticated session. Pass to and base64 of the PDF in the same call. Do not PUT uploadUrl. Queues on credits or a pag
create_machine_fax — Autonomous MPP path — returns payment_required challenge when unpaid, then charges on retry with payment_authorization
create_checkout — Start Stripe Checkout for a catalog SKU. User pays in the browser. sku: credit_pack | inbound_30day | monthly-basic | annual-basic | monthly
Who runs the SingleFax MCP server?
The SingleFax MCP server at a glance
https://singlefax.com/mcpQuestions, answered
Is there an official SingleFax MCP server?
Yes — SingleFax operates its own remote MCP server at singlefax.com. gate connects you to that official endpoint and adds security scanning, per-tool access rules, and an activity log on top.
How do I connect SingleFax to Claude or ChatGPT?
Add gate's gateway URL to your AI client once, then pick SingleFax in the directory. No account or sign-in is needed. From then on, SingleFax's tools are available in every client you've connected to gate.
Do I need to host anything?
No. SingleFax runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.
Is the SingleFax MCP server safe to connect?
It's the vendor's official endpoint, and gate scans its tools for prompt injection and hidden instructions before it goes live, re-checks it whenever it changes, and lets you allow, block, or require approval for every single tool.
Is it free?
Yes — you can get started with gate for free and connect SingleFax in minutes. No credit card required.
Connect more than just SingleFax
Every server below works through the same gateway URL — connect once, add tools anytime.
Squarespace DomainsDesignView →Set up SingleFax in: Claude · Claude Code · ChatGPT · Cursor · VS Code