mcpbeat

Boundary Guard x402 MCP Server

io.github.LarryLemonBot/boundary-guard-x402
answering

Boundary Guard x402 is answering right now. Last checked 8 min ago. It exposes 6 tools.

MCP tools for x402 readiness, paid-path probes, launch packs, and trust receipts.

Uptime history 43 hours of history · worst hour 25%
43 hours agonow
100.0%
Uptime 24h
91 of 91 checks
6
Tools
read from the server
232 ms
Response time
average over 24h
open, no key
Access
streamable-http

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 8 min ago.

run in your terminal
claude mcp add boundary-guard-x402 --transport http https://x402-resource-scanner.vercel.app/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "boundary-guard-x402": {
      "url": "https://x402-resource-scanner.vercel.app/mcp"
    }
  }
}
~/.codex/config.toml
[mcp_servers.boundary-guard-x402]
url = "https://x402-resource-scanner.vercel.app/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "boundary-guard-x402": {
      "url": "https://x402-resource-scanner.vercel.app/mcp"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "boundary-guard-x402": {
      "url": "https://x402-resource-scanner.vercel.app/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

URLTransportStateLatencyChecked
https://x402-resource-scanner.vercel.app/mcp streamable-http answering 239 ms 8 min ago

Boundary Guard x402 — questions

Answers built from our own checks of this server.

What can Boundary Guard x402 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 Boundary Guard x402 working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 232 ms. The bar chart above shows every period we have measured.
How do I connect Boundary Guard x402?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Boundary Guard x402 need an API key?
No. Boundary Guard x402 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 Boundary Guard x402?
It answers our handshake in 232 ms on average, which is faster than 56% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.