Prepaid email-verify credits for MCP agents via Stripe Link. Connect the official Proof Inbox 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
Pick your client. Copy, paste, done — or let gate handle sign-ins and policies for you.
claude mcp add --transport http proof-inbox https://mcp.proofinbox.com/mcpRun in your terminal, then restart Claude Code.
Proof Inbox · https://mcp.proofinbox.com/mcp
Real prompts you can type the moment it's connected — no setup, no docs to read.
“Use “balance”: Read-only verify credit balance for a workspace. Call this before a batch. Does not burn credits.”
“Use “verify_email”: Verify one email. Cached repeats within 30 days are free. If credits are 0, returns payment_required with a checkout_url. Never invent resul.”
“Use “receipts”: List proof of spend and proof of checks for this workspace. Use this when the human asks what a charge paid for. Do not invent checkout sess.”
Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how Proof Inbox holds up.
Operated by Proof Inbox (proofinbox.com) at its documented MCP endpoint — not a third-party mirror or community re-host.
This server only exposes public data — no account and no credentials are involved when you connect.
gate checks every tool for prompt injection, hidden instructions, data-exfiltration hints, and over-broad permissions before the server is available through your gateway.
If Proof Inbox adds or changes tools later, gate re-scans and alerts you — before your AI acts on the change.
Add one gateway URL to Claude, ChatGPT, or any MCP client. One-time setup, about two minutes.
Choose Proof Inbox in the gate directory. No sign-in needed.
Proof Inbox'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
Fetched live from the official endpoint and re-checked daily by gate — not marketing copy.
balance — Read-only verify credit balance for a workspace. Call this before a batch. Does not burn credits.
verify_email — Verify one email. Cached repeats within 30 days are free. If credits are 0, returns payment_required with a checkout_url. Never invent resul
receipts — List proof of spend and proof of checks for this workspace. Use this when the human asks what a charge paid for. Do not invent checkout sess
https://mcp.proofinbox.com/mcpYes — Proof Inbox operates its own remote MCP server at mcp.proofinbox.com. gate connects you to that official endpoint and adds security scanning, per-tool access rules, and an activity log on top.
Add gate's gateway URL to your AI client once, then pick Proof Inbox in the directory. No account or sign-in is needed. From then on, Proof Inbox's tools are available in every client you've connected to gate.
No. Proof Inbox runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.
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.
Yes — you can get started with gate for free and connect Proof Inbox in minutes. No credit card required.
Every server below works through the same gateway URL — connect once, add tools anytime.
Set up Proof Inbox in: Claude · Claude Code · ChatGPT · Cursor · VS Code