Ext Ops Panel
Open dashboard

x402 Precheck

Check an x402 payment challenge before your agent pays: network, USDC, amount, payTo, facilitator.

MCP server · by x402-precheck.w0arvg81zlgf.workers.dev

About

x402 Precheck is an MCP server published by x402-precheck.w0arvg81zlgf.workers.dev. Marketplaces we read that list it: 1 (Official MCP Registry). We first saw it on 2026-11-10 and have recorded no change since. As of our marketplace pass on 2026-11-11.

What it asks for

  • Runs remotely

None of the marketplaces we read publishes its tools or the settings it asks for.

What it declares, asks for and runs, in full

Only install plugins from developers you trust. We list what marketplaces publish and do not test plugins.

Works with

  • Claude Code
  • Codex
  • Cursor
  • VS Code
  • Copilot CLI

A one-click link opens the client, which asks you to confirm before it adds the server.

From the marketplaces that list it and the MCP transport it declares, as each client documents them. We do not test plugins.

Connect

Commands and configs built only from what its marketplaces declare. We do not run them for you and do not test plugins.

As a remote MCP server

Built from what Official MCP Registry declares.

Claude CodeTerminal
claude mcp add --transport http precheck https://x402-precheck.w0arvg81zlgf.workers.dev/mcp
Codex~/.codex/config.toml
[mcp_servers.precheck]
url = "https://x402-precheck.w0arvg81zlgf.workers.dev/mcp"
Cursor~/.cursor/mcp.json
{
  "mcpServers": {
    "precheck": {
      "url": "https://x402-precheck.w0arvg81zlgf.workers.dev/mcp"
    }
  }
}

Where it is published

MarketplaceStatusVersionFiguresVerifiedFirst seen
Official MCP Registry (Open the registry record) Listed 1.0.0 No figure published Not marked

Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.

What changed

  1. Became a product we track
  2. Official MCP Registry: appeared

Similar plugins

Products whose own names, descriptions, tools and skills are closest in meaning to this one, on every marketplace we read. Closeness is ranked within this list only.

  • x402 Pay — USDC API Payment Helper

    Pay for APIs with USDC. Read-only x402 payment discovery, verification, evidence, and status.

    by scriptmasterlabs.com · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

  • x402 endpoint checker

    Test any x402 paid URL without paying: 402, PAYMENT-REQUIRED, USDC, amounts, payTo, EIP-712, CORS.

    by x402-seller-kit.soloearn.workers.dev · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

  • PayAI x402 Facilitator

    Verify and settle x402 stablecoin payments; browse the PayAI Bazaar of x402-payable resources.

    by payai.network · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

  • AgentPay x402 Facilitator

    Verify signed x402 payments; treasury-scoped settlement is irreversible.

    by x402-agent-pay.com · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

  • check-payment-recipient dev.kgninja/check-payment-recipient

    Payment safety check for AI agents before signing. $0.05 per check; $0.50 batch (20). Via x402.

    by kgninja.dev · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

  • HPP x402 MCP Bridge

    MCP bridge for autonomous x402 payments in HPP USDC.e — discover and pay for services per call.

    by hpp-io · MCP server

    Listed on: Official MCP Registry, npm registry (MCP servers) · Describes nearly the same job

  • MoneyTools x402 agent toolkit

    39 agent tools: x402 pay gateway, precheck, token safety, tx decode, DNS; credits or 30-day plan

    by moneytools.dev · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

  • SafePay Check

    Judges a payment (PayPal, PYUSD or USDC) before an AI agent makes it. Signed proof. Moves no money.

    by safepay.agentposhq.com · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

  • 402xAgent

    Check an x402 endpoint before your agent pays: pay, skip or recheck, with Ed25519-signed receipts.

    by withgrokbot · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

  • PayAPI Market

    Search settlement-verified x402 APIs for free. Pay providers in USDC on Base, Solana or Algorand.

    by payapi.market · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

Similar plugins by marketplace

The same question asked of one marketplace at a time: is there an analog of this plugin there?

Has a listing on Claude Code: claude-plugins-community (5)
  • mpp-inspector

    Inspect, debug, and test Machine Payments Protocol (HTTP 402) endpoints directly from Claude Code. Parses spec-compliant WWW-Authenticate challenges, discovers MPP endpoints on…

    by amgb20 · Plugin bundle

    Listed on: Claude Code: claude-plugins-community · Describes nearly the same job

  • MnemoPay

    Governance and audit layer for AI agents: policy, approvals, tamper-evident audit chains.

    by mnemopay.com · MCP server

    Listed on: Official MCP Registry, Claude Code: claude-plugins-community, npm registry (MCP servers) · Describes nearly the same job

  • halliday-payments

    A Clade Code plugin for development with Halliday Payments, the all-in-one platform for integrating crypto deposits, fiat-to-crypto onramps, and cross-chain swaps.

    by HallidayInc · Plugin bundle

    Listed on: Claude Code: claude-plugins-community · Describes nearly the same job

  • coinvoyage-paykit-community

    Accept any crypto payments (Bitcoin, Solana, Ethereum, Base, Arbitrum, Optimism, Polygon, BSC, Sui, plus stablecoins like USDC/USDT) in any Claude-built app via CoinVoyage…

    by KingPeque · Plugin bundle

    Listed on: Claude Code: claude-plugins-community · Describes nearly the same job

  • tres-finance-plugin

    The first official TRES Finance plugin for Claude Code — blockchain accounting workflows, ledger management, and transaction analysis. Connects to the hosted TRES Finance MCP…

    by Nadav Gilliam · Plugin bundle

    Listed on: Claude Code: claude-plugins-community · Describes nearly the same job

Has a listing on Claude Code: claude-plugins-official (5)
  • Airwallex

    Bring Airwallex's global financial infrastructure to Claude. Orchestrate actions across your account in plain language, e.g., set up invoices from a PO, onboard suppliers from…

    by airwallex · Plugin bundle

    Listed on: Claude Code: claude-plugins-official, Claude: knowledge-work-plugins · Describes nearly the same job

  • circle-skills

    Ship stablecoin apps faster. Best-practice skills for USDC payments, cross-chain transfers, wallets, and smart contracts — plus Circle's MCP server for real-time SDK and…

    by circlefin · Plugin bundle

    Listed on: Claude Code: claude-plugins-official, Community GitHub marketplaces · Describes nearly the same job

  • airwallex-dev

    Build Airwallex payment integrations in your own codebase. Generates the checkout, card-element, onboarding, and subscription-billing code for an Airwallex integration and wires…

    by airwallex · Plugin bundle

    Listed on: Claude Code: claude-plugins-official · Describes nearly the same job

  • paypal

    PayPal development plugin for Claude — integrate payments, subscriptions, invoices, disputes, and more using PayPal's APIs and MCP server

    by paypal · Plugin bundle

    Listed on: Claude Code: claude-plugins-official, Community GitHub marketplaces · Describes nearly the same job

  • Wingspan

    Ask Claude about the contractors you pay through Wingspan, what you owe them, and what is holding up a payment, then onboard contractors and log payments as drafts, with a preview…

    by wingspanHQ · Plugin bundle

    Listed on: Claude Code: claude-plugins-official, Claude: knowledge-work-plugins · Describes nearly the same job

Has a listing on Claude: knowledge-work-plugins (5)
  • Airwallex

    Bring Airwallex's global financial infrastructure to Claude. Orchestrate actions across your account in plain language, e.g., set up invoices from a PO, onboard suppliers from…

    by airwallex · Plugin bundle

    Listed on: Claude Code: claude-plugins-official, Claude: knowledge-work-plugins · Describes nearly the same job

  • Wingspan

    Ask Claude about the contractors you pay through Wingspan, what you owe them, and what is holding up a payment, then onboard contractors and log payments as drafts, with a preview…

    by wingspanHQ · Plugin bundle

    Listed on: Claude Code: claude-plugins-official, Claude: knowledge-work-plugins · Describes nearly the same job

  • carta-investors

    Carta Investors plugin — skills for querying investor data, performance benchmarks, regulatory reporting, AGM deck generation, brand extraction, and more via the Carta MCP Server.

    by carta · Plugin bundle

    Listed on: Claude Code: claude-plugins-official, Claude: knowledge-work-plugins, Claude Code: claude-plugins-community · Describes a similar job

  • carta-cap-table

    Carta Cap Table plugin — skills and hooks for querying cap tables, grants, SAFEs, 409A valuations, waterfall scenarios, and more

    by carta · Plugin bundle

    Listed on: Claude Code: claude-plugins-official, Claude: knowledge-work-plugins, Claude Code: claude-plugins-community · Describes a similar job

  • Chronograph LP

    Portfolio monitoring and analytics for private-capital LP teams using the Chronograph connector: cashflow forecasting, commitment pacing, look-through exposure scans and…

    by chronograph-pe · Plugin bundle

    Listed on: Claude Code: claude-plugins-official, Claude: knowledge-work-plugins · Describes a similar job

Has a listing on Codex: openai-curated (openai/plugins) (5)
  • Stripe

    Develop your payments integration faster with the ability to create products, prices, and payment links directly in ChatGPT. Run your business from ChatGPT with the ability to…

    by Stripe · Plugin bundle

    Listed on: Codex: openai-curated (openai/plugins) · Describes nearly the same job

  • Public Equity Investing

    Public equity investing workflows for listed-company research, earnings analysis, valuation, model updates, long/short pitches, catalysts, thesis tracking, ETF/index and…

    by OpenAI · Plugin bundle

    Listed on: Codex: openai-curated (openai/plugins) · Describes a similar job

  • crowdstrike-falcon-fusion

    CrowdStrike Falcon Fusion skills for authoring, deploying, and executing Fusion workflows. Includes live action discovery, YAML authoring with schema validation, workflow import…

    by CrowdStrike · Plugin bundle

    Listed on: Claude Code: claude-plugins-official, Codex: openai-curated (openai/plugins), Copilot CLI: github/awesome-copilot · Describes a similar job

  • ChatCut

    Install, open, and connect the signed ChatCut Desktop app from Codex.

    by ChatCut · Plugin bundle

    Listed on: Codex: openai-curated (openai/plugins) · Describes a similar job

  • Codex Security

    Codex Security workflows for security scans, analysis, and investigation.

    by OpenAI · Plugin bundle

    Listed on: Codex: openai-curated (openai/plugins) · Describes a similar job

Has a listing on Community GitHub marketplaces (5)
  • moonpay-webhooks

    Receive and verify MoonPay webhooks. Use when setting up MoonPay webhook endpoints, debugging Moonpay-Signature-V2 verification, or handling crypto on/off ramp events like…

    by Hookdeck · Plugin bundle

    Listed on: Community GitHub marketplaces · Describes nearly the same job

  • kryptogo-pay

    KryptoGO Payment 穩定幣支付串接工具 - 支付收款、交易查詢、Webhook 回調、提領轉帳

    by kryptogo · Plugin bundle

    Listed on: Community GitHub marketplaces · Describes nearly the same job

  • blindpay-webhooks

    Receive and verify BlindPay webhooks (stablecoin and fiat payins/payouts API, delivered via Svix). Use when setting up BlindPay webhook handlers, debugging svix-signature…

    by Hookdeck · Plugin bundle

    Listed on: Community GitHub marketplaces · Describes nearly the same job

  • nextpay-webhooks

    Receive and verify NextPay (NextAPI) webhooks, delivered via Svix. Use when setting up NextPay webhook handlers, debugging svix-signature verification, or handling events like…

    by Hookdeck · Plugin bundle

    Listed on: Community GitHub marketplaces · Describes nearly the same job

  • spherepay-webhooks

    Receive and verify SpherePay webhooks. Use when setting up SpherePay v2 webhook handlers, debugging Sphere-Signature / Sphere-Timestamp verification, or handling…

    by Hookdeck · Plugin bundle

    Listed on: Community GitHub marketplaces · Describes nearly the same job

Has a listing on Copilot CLI: github/awesome-copilot (5)
  • mastercard-developers

    Mastercard Developers plugin to help build integrations with Mastercard APIs, including best practices and the Mastercard Developers MCP server.

    by Mastercard · Plugin bundle

    Listed on: Copilot CLI: github/awesome-copilot · Describes nearly the same job

  • stripe

    Accept payments and grow your business. Stripe's agent plugin includes best practices, upgrade guidance, and our MCP server.

    by stripe · Plugin bundle

    Listed on: Copilot CLI: github/awesome-copilot · Describes nearly the same job

  • token-pacman

    Visualizes live session AI-credit usage as a Pac-Man board with pellets, ghosts, fruit milestones, and game-over limits.

    by James Montemagno · Plugin bundle

    Listed on: Copilot CLI: github/awesome-copilot · Describes nearly the same job

  • frugal

    Before your agent signs up for a paid API, LLM model, cloud service, SaaS plan, domain or anything else that costs money, it checks free tiers, right-sized plans and billing…

    by fainir · Plugin bundle

    Listed on: Copilot CLI: github/awesome-copilot · Describes nearly the same job

  • BLEA

    Safe BLE diagnostics, evidence workflows, and guarded automation for AI agents.

    by Nitmi · MCP server

    Listed on: Official MCP Registry, Copilot CLI: github/awesome-copilot · Describes a similar job

Has a listing on Copilot CLI: github/copilot-plugins (5)
  • microsoft-365-agents-toolkit

    Toolkit for building Microsoft 365 Copilot declarative agents — scaffolding, JSON manifest development, and capability configuration.

    by microsoft · Plugin bundle

    Listed on: Copilot CLI: github/copilot-plugins · Describes nearly the same job

  • mobile-app

    Build and deploy Power Apps code apps for mobile using Expo (React Native), with native device functionality and Power Platform connectors

    by microsoft · Plugin bundle

    Listed on: Copilot CLI: github/copilot-plugins · Describes nearly the same job

  • advanced-security

    Advanced Security plugin for GitHub Copilot.

    by github · Plugin bundle

    Listed on: Copilot CLI: github/copilot-plugins · Describes nearly the same job

  • workiq

    Query Microsoft 365 data with natural language — emails, meetings, documents, Teams messages, and more.

    by microsoft · Plugin bundle

    Listed on: Copilot CLI: github/copilot-plugins, npm registry (MCP servers) · Describes nearly the same job

  • canvas-apps

    Build Power Apps Canvas Apps using the Canvas Authoring MCP server.

    by microsoft · Plugin bundle

    Listed on: Copilot CLI: github/copilot-plugins · Describes nearly the same job

Has a listing on Cursor: cursor/plugins (5)
  • OnePay

    Access your OnePay accounts: balances, transactions, credit, Pay Later, investments, crypto, and rewards.

    by Cursor · Plugin bundle

    Listed on: Cursor: cursor/plugins · Describes nearly the same job

  • X Money

    Use your X Money Card, send money to users on X, manage your finances, view your balance and browse through your transaction history.

    by Cursor · Plugin bundle

    Listed on: Cursor: cursor/plugins · Describes nearly the same job

  • Coinbase

    Check balances, get quotes, and preview or place trades.

    by Cursor · Plugin bundle

    Listed on: Cursor: cursor/plugins · Describes nearly the same job

  • Brex

    Query expenses, receipts, bills, cards, and travel.

    by Cursor · Plugin bundle

    Listed on: Cursor: cursor/plugins · Describes nearly the same job

  • Navan

    Query expenses, travel bookings, policies, and cards.

    by Cursor · Plugin bundle

    Listed on: Cursor: cursor/plugins · Describes nearly the same job

Has a listing on Docker MCP Catalog (5)
  • Dodo Payments

    Tools for cross-border payments, taxes, and compliance.

    by docker · MCP server

    Listed on: Docker MCP Catalog · Describes nearly the same job

  • Bitrefill

    A Model Context Protocol Server connector for Bitrefill public API, to enable AI agents to search and shop on Bitrefill.

    by bitrefill · MCP server

    Listed on: Docker MCP Catalog · Describes nearly the same job

  • OpenZeppelin Stellar Contracts

    Access to OpenZeppelin Stellar Contracts.

    by docker · MCP server

    Listed on: Docker MCP Catalog · Describes nearly the same job

  • Mercado Pago

    Provides access to Mercado Pago Marketplace API.

    by docker · MCP server

    Listed on: Docker MCP Catalog · Describes nearly the same job

  • Stripe

    Interact with Stripe services over the Stripe API.

    by stripe · MCP server

    Listed on: Docker MCP Catalog · Describes nearly the same job

Has a listing on Official MCP Registry (5)
  • x402 Pay — USDC API Payment Helper

    Pay for APIs with USDC. Read-only x402 payment discovery, verification, evidence, and status.

    by scriptmasterlabs.com · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

  • x402 endpoint checker

    Test any x402 paid URL without paying: 402, PAYMENT-REQUIRED, USDC, amounts, payTo, EIP-712, CORS.

    by x402-seller-kit.soloearn.workers.dev · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

  • PayAI x402 Facilitator

    Verify and settle x402 stablecoin payments; browse the PayAI Bazaar of x402-payable resources.

    by payai.network · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

  • AgentPay x402 Facilitator

    Verify signed x402 payments; treasury-scoped settlement is irreversible.

    by x402-agent-pay.com · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

  • check-payment-recipient dev.kgninja/check-payment-recipient

    Payment safety check for AI agents before signing. $0.05 per check; $0.50 batch (20). Via x402.

    by kgninja.dev · MCP server

    Listed on: Official MCP Registry · Describes nearly the same job

Has a listing on PyPI (MCP servers) (5)
  • SRA-RiskGate

    Check stablecoin and x402 payments before an AI agent pays: approve, hold or reject.

    by sriram1983007-dev · MCP server

    Listed on: Official MCP Registry, PyPI (MCP servers) · Describes nearly the same job

  • PayPing

    PayPing merchant account for agents: balance, sales, invoices; create invoices and payment links.

    by sepehr071 · MCP server

    Listed on: Official MCP Registry, PyPI (MCP servers) · Describes nearly the same job

  • Lightning Enable MCP Server

    AI agent Lightning payments: L402, invoices, wallets, API discovery, budgets, self-serve signup.

    by refined-element · MCP server

    Listed on: Official MCP Registry, PyPI (MCP servers) · Describes nearly the same job

  • pain001-mcp io.github.sebastienrousseau/pain001-mcp

    ISO 20022 payment files for agents: generate, validate, and convert pain.001, pain.008, MT101.

    by sebastienrousseau · MCP server

    Listed on: Official MCP Registry, PyPI (MCP servers) · Describes nearly the same job

  • remit-mcp io.github.gabrielmahia/remit-mcp

    Compare remittance corridors to Kenya (US, UK, Canada) on synthetic prices. Demonstration only.

    by gabrielmahia · MCP server

    Listed on: Official MCP Registry, PyPI (MCP servers) · Describes a similar job

Has a listing on npm registry (MCP servers) (5)
  • HPP x402 MCP Bridge

    MCP bridge for autonomous x402 payments in HPP USDC.e — discover and pay for services per call.

    by hpp-io · MCP server

    Listed on: Official MCP Registry, npm registry (MCP servers) · Describes nearly the same job

  • payagent-mcp io.github.stevemilton/payagent-mcp

    Pay x402 APIs in USDC on Base, Solana, and BNB Chain with spend mandates, receipts, idempotency.

    by stevemilton · MCP server

    Listed on: Official MCP Registry, npm registry (MCP servers) · Describes nearly the same job

  • x402check

    Risk-check counterparties before an AI agent pays; pay x402 resources only after a verified allow

    by caiovicentino · MCP server

    Listed on: Official MCP Registry, npm registry (MCP servers) · Describes nearly the same job

  • AiFinPay

    Pay for any HTTP API in stablecoins on Polygon and Solana with one MCP call.

    by daochild · MCP server

    Listed on: Official MCP Registry, npm registry (MCP servers) · Describes nearly the same job

  • StablecoinX

    StablecoinX merchant tools: auth, payments, paymaster, webhooks, floYsh sites and vault settings.

    by e2xlabs · MCP server

    Listed on: Official MCP Registry, npm registry (MCP servers) · Describes nearly the same job

Found by meaning, not by shared code or a shared repository: similar plugins stay separate products, and this is not a review or a recommendation.

Want this mark on your plugin in our catalog?

Prove you maintain it with a file in its repository, a file on your domain or a DNS record, and you can show this mark on the card, with live banners for your site and README. How verification works

You also get alerts when a marketplace lists it, drops it, changes its verified mark or what it asks for, and its remote endpoint goes on monitoring as a web service.

Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.

Where the data comes from: how the catalog is built