GateCheck by LarryBuildsAI

Name: GateCheck by LarryBuildsAI
Author: LarryLemonBot

by LarryLemonBotversion 0.1.3i★ –iRuns in the cloud

Registry nameio.github.LarryLemonBot/gatecheck

Install

Overview

Description from the maker (original English)

One-cent x402 and MCP readiness checks plus fixed-price marketplace launch packs.

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

User voiceiNo reviews yetReviews open together with accounts in a later step
Our basic checksi1 of 1 passedChecked from public information; code not scanned yet
UsageiNot measured yet★ –

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

Connection: Runs in the cloud
Transport: Streamable HTTP
Category: Online shops & payments
You need to fill in: Authorization

Install

Pick the AI app you use, then copy the settings.

Before you install

Basic checks: 1 of 1 passed
Runs on the maker’s server: what you ask it goes through their server.
You fill in yourself: Authorization

Values marked secret are keys to your account. Never share them or paste them into a chat.

You need

Runs in the cloudNothing to install; it connects over the internet

Which app do you use?

ClaudeClaude CodeCursorVS CodeChatGPT

Pick your app above. We remember it, so next time the button says “Install in …”.

This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.

Run this in your terminal

claude mcp add --transport http gatecheck https://proofbeforepay.vercel.app/gatecheck/mcp --header 'Authorization: your-value'

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "gatecheck": {
      "url": "https://proofbeforepay.vercel.app/gatecheck/mcp",
      "headers": {
        "Authorization": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "gatecheck": {
      "type": "http",
      "url": "https://proofbeforepay.vercel.app/gatecheck/mcp",
      "headers": {
        "Authorization": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

Authorization secret HTTP header
Bearer token for protected direct tool execution; public initialize and tools/list are available without it.

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

We have not read this server’s tool list yet; we check endpoints in rotation.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 8, 2026

✓ Pass
Maker matches the repo
The registry name was verified with the GitHub account LarryLemonBot, which owns the repo
… Not checked yet
Still maintained
We have not read this repo from GitHub yet
… Not checked yet
Has a licence
We have not read this repo from GitHub yet
… Not checked yet
Endpoint responds
Not checked yet; we check endpoints in rotation
… Not checked yet
Sign-in with OAuth
Not checked yet; we check endpoints in rotation
… Not checked yet
No hidden instructions in tool descriptions
Not checked yet; we read the tool list when we check the endpoint

Compared with others in Online shops & paymentsi

More stars than 0% of the other 2546 servers in this category
Published to the registry more recently than 18% of the other 2546 servers in this category
Basic checks equal to or better than 100% of the other 2546 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is GateCheck by LarryBuildsAI safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

You need to fill in: Authorization

Does it run on my computer or in the cloud?

It runs in the maker’s cloud. Connect over the internet with nothing to install, but what you send passes through the maker’s servers.

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.1.3) reached the registry 4 months ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.

What can I use instead?

In the same category: Spree Commerce: open-source B2B and marketplace ecommerce, Stripe MCP, MCP Cn Commerce

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Spree Commerce: open-source B2B and marketplace ecommerce

by spree

Open-source B2B and marketplace ecommerce; new stores include an MCP server for AI agents.

Runs in the cloud★ 15,812BSD-3-ClauseUpdated 8 days ago

Install

Stripe MCP

by stripe

Stripe’s official server lets AI view and manage customers, products, payments and invoices. Connect to Stripe’s cloud and sign in with OAuth.

Runs in the cloud★ 2,043MITUpdated 12 months ago

Install

MCP Cn Commerce

by TonyWang-hub

8 read-only MCP platform entries; support is operation-specific; merchant live acceptance pending

Runs on your computer★ 96MITUpdated 29 days ago

Install

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

GateCheck by LarryBuildsAI

GateCheck is a hosted remote MCP server and x402 readiness surface for paid agent-tool sellers.

Use it before public submission, promotion, or paid agent routing to verify that a paid x402 or MCP tool is discoverable, inspectable, and claim-bounded.

Hosted MCP Endpoint

Remote MCP URL: https://proofbeforepay.vercel.app/gatecheck/mcp
Transport: streamable-http
Public introspection: initialize and tools/list
Protected tool execution: bearer auth may be required for direct production calls
Product homepage: https://proofbeforepay.vercel.app/gatecheck
Scorecard: https://github.com/LarryLemonBot/gatecheck/blob/main/scorecard.md
Product card: https://proofbeforepay.vercel.app/gatecheck/product-card.md
Marketplace index: https://proofbeforepay.vercel.app/gatecheck/marketplaces.json

MCP Client Config

"mcpServers": { "gatecheck": { "type": "streamable-http", "url": "https://proofbeforepay.vercel.app/gatecheck/mcp" } } }

If your client supports request headers and you have a GateCheck production token, add:

"Authorization": "Bearer YOUR_GATECHECK_TOKEN" }

Do not put private keys, wallet secrets, cookies, customer data, or marketplace dashboard credentials into public metadata.

Tools

GateCheck currently exposes six MCP tools:

boundary_guard_check
scan_x402_resource
probe_x402_paid_path
check_agent_tool_readiness
generate_x402_launch_pack
generate_trust_receipt

Public tools/list is available so buyers, agents, and directories can inspect the tool inventory before protected calls.

Buy through PayanAgent

These fixed-price offers settle in USDC through PayanAgent and automatically return the purchased GateCheck artifact:

Buyer input is validated before PayanAgent presents the payment flow. Generated launch packs contain listing and approval-review artifacts; they do not publish listings, contact buyers, or claim marketplace endorsement.

What GateCheck Checks

Product-scoped discovery: homepage, llms.txt, agents.txt, product card, skill card, sitemap, and MCP server card.
MCP inventory: public initialize and tool-list introspection.
x402 behavior: unpaid 402 challenge metadata without submitting payment signatures or moving funds.
Listing readiness: buyer-facing copy, prices, evidence links, launch-pack artifacts, and claim boundaries.

Claim Boundary

GateCheck reports and receipts prove observed public metadata, unpaid 402 behavior, request summaries, hashes, and returned artifacts only.

They do not prove marketplace endorsement, settlement, security certification, custody, KYC/AML coverage, buyer adoption, or downstream execution.

Product Boundary

GateCheck is separate from Signal Desk and ResultRail.

This repository is the public distribution and marketplace-submission surface for GateCheck only.

Current Public Visibility

Verified public surfaces include:

GateCheck remote MCP endpoint: https://proofbeforepay.vercel.app/gatecheck/mcp
Official MCP Registry: https://registry.modelcontextprotocol.io/v0.1/servers?search=io.github.LarryLemonBot/gatecheck
Smithery: https://smithery.ai/servers/larrybuildsai/gatecheck
Glama: https://glama.ai/mcp/connectors/io.github.LarryLemonBot/gatecheck
mcpservers.org: https://mcpservers.org/servers/x402-resource-scanner-vercel-app-gatecheck-marketplaces

Known external blockers: the former MCP.so listing URL currently returns 404, and https://xpay.tools/agents.txt has not exposed gatecheck. Neither surface is claimed as live.

Marketplace Packet

Cline submission draft: marketplaces/cline-submission.md
MCP.Directory submission draft: marketplaces/mcp-directory-submission.md
Server manifest: server.json
Public scorecard: scorecard.md
Logo SVG: assets/gatecheck-logo.svg
Logo PNG: assets/gatecheck-logo.png

GateCheck by LarryBuildsAI

Overview

PopNx MCP’s three pillars

What you can do with it

Install

Before you install

Values you fill in

What it can do

Basic checksi

Maker matches the repo

Still maintained

Has a licence

Endpoint responds

Sign-in with OAuth

No hidden instructions in tool descriptions

Compared with others in Online shops & paymentsi

Common questions

Alternatives

Spree Commerce: open-source B2B and marketplace ecommerce

Stripe MCP

MCP Cn Commerce

README from the maker

GateCheck by LarryBuildsAI

Hosted MCP Endpoint

MCP Client Config

Tools

Buy through PayanAgent

What GateCheck Checks

Claim Boundary

Product Boundary

Current Public Visibility

Marketplace Packet