GateCheck by LarryBuildsAI MCP Server

by larrylemonbot Your server? Claim it

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GateCheck by LarryBuildsAI is listed as active in the registry but did not answer our last check. It exposes 6 tools. Last commit 15 Jul 2026.

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

Uptime history 91 days of history · worst day 30%

91 days agonow

83.7%

Uptime 24h

77 of 92 checks

Tools

read from the server

235 ms

Response time

average over 24h

Stars

last commit 15 Jul 2026

GateCheck by LarryBuildsAI does not always answer

Over the last week it answered 96.1% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 3 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add gatecheck --transport http https://proofbeforepay.vercel.app/gatecheck/mcp

Settings → Connectors → Add custom connector, then paste this address

https://proofbeforepay.vercel.app/gatecheck/mcp

~/.codex/config.toml

[mcp_servers.gatecheck]
url = "https://proofbeforepay.vercel.app/gatecheck/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "gatecheck": {
      "url": "https://proofbeforepay.vercel.app/gatecheck/mcp"
    }
  }
}

.vscode/mcp.json

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

Available tools 6

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

generate

generate_trust_receipt

Generate a deterministic trust receipt from sanitized request/policy/result/payment summaries. Do not submit raw auth headers, cookies, API keys, private keys, payment signatures, payment response headers, customer prompts, customer documents, or payer-identifying evidence.

generate_x402_launch_pack

Generate marketplace-safe launch assets for an x402/MCP seller: listing copy, buyer FAQ, checklist, approval packet, and claim boundaries. Pass target plus optional product_name, audience, primary_use_case, marketplace_url, and paid_path; service/premium tiers include readiness evidence. Tiers: single $9, service $29, premium $49.

agent

check_agent_tool_readiness

GateCheck readiness: check whether an x402/agent-facing tool is ready for agent routing, marketplace listing, and paid-path monitoring, including public agent discovery surfaces (/llms.txt, /agents.txt, /.well-known/mcp.json, /mcp). Pass target plus optional tier, marketplace_url, expected_resources, and paid_path; deep/report tiers add unpaid 402 probing when paid_path is supplied. Tiers: quick $1, deep $5, report $10.

boundary

boundary_guard_check

Create a deterministic, read-only pre-action receipt from request, policy, and optional result evidence. Use before an agent posts, spends, lists, or writes so the decision can be audited; no external action is executed.

probe

probe_x402_paid_path

Probe a public x402 paid endpoint without signing or paying, then parse the HTTP 402 challenge. Pass target plus optional expected network/asset/price to verify payment metadata and receive a deterministic health receipt.

scan

scan_x402_resource

Read-only scan of a public API/provider URL for x402, OpenAPI, pricing, and agent-discovery metadata. Pass url, and optionally marketplace_url plus expected_resources, to get a readiness score, issues, and fixes; no private endpoints are called.

Endpoints

URL	Transport	State	Latency	Checked
https://proofbeforepay.vercel.app/gatecheck/mcp	streamable-http	answering	44 ms	3 min ago

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GateCheck by LarryBuildsAI — questions

Answers built from our own checks of this server.

What can GateCheck by LarryBuildsAI do?

It exposes 6 tools, read directly from the server on our last check. Among them: boundary_guard_check, check_agent_tool_readiness, generate_trust_receipt, generate_x402_launch_pack, probe_x402_paid_path, scan_x402_resource. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →

Is GateCheck by LarryBuildsAI working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 77 of 92 checks got a reply (83.7%), average response time 235 ms. The bar chart above shows every period we have measured.

The registry lists GateCheck by LarryBuildsAI as active — why does it not respond?

The official MCP registry stores what the author submitted; it does not verify that the server still runs. We check the endpoint ourselves, and this one does not answer. Catalogues that copy the registry without checking will show it as working.

How do I connect GateCheck by LarryBuildsAI?

Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.

Does GateCheck by LarryBuildsAI need an API key?

No. GateCheck by LarryBuildsAI completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 6 of them are readable on this page. This is what we observed, not what the docs claim.

How fast is GateCheck by LarryBuildsAI?

It answers our handshake in 235 ms on average, which is faster than 62% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.

Is GateCheck by LarryBuildsAI open source?

We cannot say either way: 1 stars on GitHub, but we could not determine the licence, and without one the code is not open source by default.