x402check.dev MCP server
by x402check.dev MCP server in Travel & booking, indexed and not reviewed
HostedLocalvendor's ownwidely used
Not reviewed
No score, grade or rank. This listing is facts from the official MCP registry and our own checks, and it stays out of the rankings until the panel reviews it.
Preflight before paying any x402 tool (ok|caution|avoid + history). 1 free/wallet; then $0.01 Base.
Facts
- MCP registry
dev.x402check/mcp· 0.1.6- Endpoint
https://x402check.dev/mcp- Packages
npmx402check-mcp stdio- Website
- x402check.dev
- npm / week
- 1.2k
- Registry entry
- updated 2 Nov 2026
From the official MCP registry, the package registries and our own checks. JSON · Markdown
Why it's listed
- It's published in the registry under x402check.dev, a namespace the registry only gives to whoever proves they control that domain.
- It's in real use: 1,206 npm downloads a week.
Being indexed says nothing about quality, and nobody can pay for it. Is this yours? Ask for a review.
Tools it lists 6 · about 1,350 tokens of context · checked 2 hours ago
| Tool | What it does | Hint |
|---|---|---|
preflight_check | Preflight an x402 seller URL before settle / PAYMENT-SIGNATURE. Pass the absolute https seller URL. Returns verdict ok|caution|avoid plus that tool's history only (uptime, payToChanges, priceChanges). Use when: about to… | writes |
verify_payto | Verify the payTo / receiving wallet an x402 seller demands before you sign. Same check as preflight_check: live 402 probe + history.payToChanges (wallet rotations) and priceChanges. Use when confirming which Base USDC… | writes |
preflight_batch | Trust-check up to 25 x402 seller URLs in one request. Charged per URL (N × unit) in a single Exact settlement via MCP _meta payment. Prefer when comparing candidates, picking the cheapest/most reliable, or screening… | writes |
compare_tools | Compare several x402 tools before choosing which to pay. Alias of preflight_batch: returns each URL's verdict, priceUsd, payTo, uptimePct, and drift history so you can pick reliable/cheap candidates and skip avoid.… | writes |
deep_check | Deeper trust check before paying an x402 endpoint ($0.05 Exact USDC). Runs the same live 402 + history as preflight_check, then repeated probes for payTo/price consistency, a recent public Base USDC-to-payTo transfer… | writes |
watch_tool | Subscribe to daily re-checks of one x402 seller URL for 30 days. Alerts your webhook and/or email when payTo, price, network, or availability changes. Fixed $5 USDC Exact (not per-check). Optional after a one-shot… | writes |
What https://x402check.dev/mcp answered to tools/list, asked without credentials. answered without the initialize handshake. The token figure is the size of the list as sent, divided by four; a model sees about that much before it calls anything. Full definitions, input schemas included, are in the listing's JSON under mcpTools.
How its tools read to an agent 0 errors · 2 warnings · 1 note
- warnTC11compare_tools1 parameter without a description: fresh
- warnTC11preflight_batch1 parameter without a description: fresh
- noteTC24server6 of 6 tools have no outputSchema
The checks from /check and anchor check, run each day on the list above: about 1,350 tokens of definitions. Not part of the score yet. Check your own server.