mcp server
GateCheck by LarryBuildsAI
One-cent x402 and MCP readiness checks plus fixed-price marketplace launch packs.
Description as published by the maintainer. Source
- version 0.1.3
- active
active — Registry entry last updated 2026-07-14.
What this server can do
6 functions, named and described by the server itself. Parameter names are shown because they say more about what a function does than its name usually does.
boundary_guard_check(policy, result, request, nextStep)- 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. Required: request.
check_agent_tool_readiness(tier, method, target, expected, paid_path, marketplace_url, expected_resources)- 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. Required: target.
generate_trust_receipt(policy, result, payment, request, nextStep)- 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. Required: request.
generate_x402_launch_pack(tier, method, target, audience, expected, paid_path, product_name, marketplace_url, primary_use_case, expected_resources, desired_marketplaces)- 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. Required: target.
probe_x402_paid_path(mode, method, target, expected)- 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. Required: target.
scan_x402_resource(url, marketplace_url, expected_resources)- 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. Required: url.
Last successful function declaration observed on . Source: https://proofbeforepay.vercel.app/gatecheck/mcp. We list what the server declared; we do not call any of these functions.
Endpoint status observed on . Source: https://proofbeforepay.vercel.app/gatecheck/mcp.
Signals
These are separate measurements of different things. They are deliberately not combined into one score, because a popularity number that mixes website traffic with saves and stars cannot be checked or acted on.
| Signal | Value | What it measures | Window | Observed | Source |
|---|---|---|---|---|---|
| Latest published version | 0.1.3 | Latest version string the maintainer published to the registry. | as of fetch | Model Context Protocol | |
| Registry record last updated | 2026-07-14 | When the registry record was last updated by its maintainer. | point in time | Model Context Protocol | |
| First listed in the MCP Registry | 2026-07-14 | Date this server was first published to the official MCP Registry. Not a usage or quality measure. | point in time | Model Context Protocol | |
| mcp tools declared | 6 tools | Number of functions the server itself declared when asked to list them. This is what the server offers an agent, not a measure of how well any of them work. | as of probe | proofbeforepay.vercel.app | |
| mcp endpoint status | ok | The server listed 6 functions when asked. | as of probe | proofbeforepay.vercel.app |
Where to get it
Also from larrylemonbot
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ResultRail by LarryBuildsAI
Five-to-twelve-cent source-attributed public URL and domain result packs for AI agents.
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Signal Desk by LarryBuildsAI
One-to-three-cent spend routing, lead research, token-risk, and agent-tool comparison preflights.
This record as data
Every field on this page, with its source and observation date, is in the catalog JSON. Fetch the whole kind at once instead of parsing this HTML.
GET /api/v1/entries/mcp_server.json