x402 agent toolkit: service finder, payment safety, Solana & web tools

Reliability

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How to connect

Add it to any MCP client that supports remote servers.

{
  "mcpServers": {
    "x402-agent-toolkit-service-finder-payment-safety-solana-web": {
      "type": "http",
      "url": "https://x402-pay-precheck.moneytools.workers.dev/mcp"
    }
  }
}

137 tools

• x402_recommend

  Find which x402 paid service to call for a task. Returns endpoints ranked by relevance and live liveness (unpaid probe returned valid x402 terms, payTo OFAC-screened), latency and price; top 3 freshly pre-checked. Free to try: 20 MCP calls/day per client, no API key or wallet…

• x402_precheck

  Before paying an x402 endpoint: fetch it, validate its HTTP 402 payment requirements (scheme, network, payTo, amount, asset) and screen payTo against the OFAC SDN crypto-address list. Returns verdict ok|warn|block|not_402. Free to try: 20 MCP calls/day per client, no API key or…

• x402_verify_settlement

  Verify an on-chain USDC settlement: tx hash on network (base, base-sepolia, polygon, arbitrum, avalanche, bsc) paid amount to payTo. Returns verdict valid|invalid|pending|not_found. Free to try: 20 MCP calls/day per client, no API key or wallet needed (beyond that: prepaid…

• x402_gateway_plan

  Before paying an x402 seller through the non-custodial MoneyTools Pay Gateway: prechecks the seller (valid x402 terms, OFAC-screened payTo) and returns the gateway URL to call, the price and the gateway fee (max(0.5% of price, $0.001), charged from prepaid credits only when the…

• solana_mint_check

  Rule-based safety check of a Solana SPL / Token-2022 mint: mint & freeze authority, permanent delegate, transfer hook/fee, pausable, default-frozen, largest-holder concentration. Returns riskScore 0-100 and verdict low|medium|high. Free to try: 20 MCP calls/day per client, no…

• web_read_markdown

  Fetch a public web page and return clean Markdown (title, headings, links, lists, code) with a sha256 of the content. Respects robots.txt, public pages only, 1h cache. Free to try: 20 MCP calls/day per client, no API key or wallet needed (beyond that: prepaid credits via header…

• email_check

  Validate an email address without sending mail or SMTP probing: syntax, domain exists, MX / null-MX, SPF, DMARC, disposable domain (10k+ list), role account, free provider, typo suggestion. Verdict valid|risky|invalid. Free to try: 20 MCP calls/day per client, no API key or…

• swap_quote

  Get a best-price token swap quote on one EVM chain (KyberSwap aggregator) or a cross-chain bridge quote (LI.FI, fallback Relay; set toChain). Returns expected and minimum output, price impact, gas, every fee, safety warnings and, if you pass taker, an UNSIGNED transaction (plus…

• x402_find_endpoint

  Find which live x402 paid API to call for a need (e.g. 'transcribe audio', 'web search', 'token price'), ranked by relevance and measured seller reputation (uptime 24h/7d, valid x402 terms, latency, price stability) from status.moneytools.dev probes, with price and ready links…

• allowance_setup

  For a human who wants to give their AI agent money but does not know crypto: returns a tailored 3-step plan (zh-TW or English) - 1) create their own non-custodial AI wallet with email sign-in (Coinbase Agentic Wallet), 2) top up by region (card where supported; Taiwan…

• list_swap_tokens

  List the chains, chain ids, native tokens and token symbols accepted by swap_quote. Free.

• plan_buy

  Free: returns price, coverage, fair-use cap and the exact x402 URL to buy the monthly plan (1 USDC once via x402 = 30 days of all paid MoneyTools tools, 1,000 calls/day fair use; excludes Pay Gateway 0.5% fees and swap fees; NOT auto-renewing). MCP cannot carry the x402 payment…

• plan_status

  Free: status of your MoneyTools API key: monthly-plan expiry, calls used today vs the 1,000/day fair-use cap, or remaining prepaid credits. Uses the X-API-Key header of this MCP request (or the apiKey argument).

• token_safety_check

  Before buying an ERC-20: simulates USDC→token→USDC with aggregator quotes and reads the contract (owner, proxy, paused, supply). Flags no-sell-route (honeypot pattern), high round-trip loss (tax / thin liquidity). Free: 10 calls/day; then $0.003 via the HTTP endpoint or…

• address_profile

  Profile an EVM address or ENS name across Ethereum, Base, Arbitrum, Optimism, Polygon, BSC, Avalanche: EOA vs contract vs EIP-7702 delegated, nonce, native balances in USD, primary ENS name, known-contract label. Free: 10 calls/day; then $0.002 via the HTTP endpoint or X-API-Key…

• ens_resolve

  Resolve an ENS name to an address (+ url/avatar/twitter/github records, optional L2 addresses), or an address to its primary ENS name with forward verification. Free: 10 calls/day; then $0.001 via the HTTP endpoint or X-API-Key credits. [served by tools.moneytools.dev]

• gas_compare

  Current gas on 7 EVM chains: base fee, priority fee, suggested maxFee, and the USD cost of a transfer, ERC-20 transfer, approve and DEX swap. Tells you the cheapest chain right now. Free: 10 calls/day; then $0.001 via the HTTP endpoint or X-API-Key credits. [served by…

• erc20_info

  Name, symbol, decimals, total supply, owner, paused, upgradeable-proxy detection and (optional) a holder's balance for any ERC-20. Free: 10 calls/day; then $0.001 via the HTTP endpoint or X-API-Key credits. [served by tools.moneytools.dev]

• allowance_revoke_plan

  Find risky ERC-20 approvals for a wallet (default: common tokens × 20 well-known routers/spenders, or your own lists) and get UNSIGNED approve(spender,0) revoke transactions. Read-only. Free: 10 calls/day; then $0.003 via the HTTP endpoint or X-API-Key credits. [served by…

• tx_explain

  Explain a transaction in plain words: status, fee in USD, decoded method and arguments, token/NFT transfers, approvals (incl. unlimited / setApprovalForAll), other events. Free: 10 calls/day; then $0.003 via the HTTP endpoint or X-API-Key credits. [served by tools.moneytools.dev]

• calldata_decode

  Decode raw EVM calldata before signing: function name and typed arguments via the open Sourcify signature DB (or your ABI / signature), plus a plain-language meaning for risky selectors (approve, setApprovalForAll, permit...). Free: 10 calls/day; then $0.001 via the HTTP…

• contract_abi

  Fetch a verified contract's ABI from Sourcify (open data) with proxy resolution: implementation ABI merged, function and event signature lists. Free: 10 calls/day; then $0.002 via the HTTP endpoint or X-API-Key credits. [served by tools.moneytools.dev]

• signature_verify

  Verify a personal_sign message or EIP-712 typed-data signature against an address, including smart-contract wallets (ERC-1271 / ERC-6492). Free: 10 calls/day; then $0.001 via the HTTP endpoint or X-API-Key credits. [served by tools.moneytools.dev]

• typed_data_risk

  Before an agent signs EIP-712 data: identifies Permit / Permit2 / EIP-3009 (x402) / Seaport / CoW / delegation messages, explains them in one sentence and flags unlimited amounts, far deadlines, unknown spenders and NFT-drain listings. Free: 10 calls/day; then $0.003 via the…

• x402_validate

  Lint any x402 paid endpoint like a client would: 402 status, PAYMENT-REQUIRED header decode, CAIP-2 network, integer amount, payTo/asset, EIP-712 domain extra, CORS expose headers, bazaar discovery, /.well-known/x402. Score + fixes. Unpaid request only. Free: 10 calls/day; then…

• http_inspect

  Fetch a URL and report status, redirect chain, latency, size, cache headers, CORS, parsed rate-limit headers (RateLimit-*, X-RateLimit-*, Retry-After) and a security-headers grade. Free: 10 calls/day; then $0.002 via the HTTP endpoint or X-API-Key credits. [served by…

• url_metadata

  Title, description, canonical, language, favicon, Open Graph + Twitter card, JSON-LD types, feeds, word count and what's missing for link previews. Metadata only, not page content. Free: 10 calls/day; then $0.002 via the HTTP endpoint or X-API-Key credits. [served by…

• dns_lookup

  A/AAAA/CNAME/MX/TXT/NS/CAA (or chosen types) via DNS-over-HTTPS, DNSSEC flag, SPF/DMARC/DKIM detection and common misconfigurations. Free: 10 calls/day; then $0.001 via the HTTP endpoint or X-API-Key credits. [served by tools.moneytools.dev]

• domain_rdap

  Registrar, creation/expiry dates, age in days, status codes, nameservers and DNSSEC from RDAP; flags very new domains (phishing signal) and near expiry. Free: 10 calls/day; then $0.002 via the HTTP endpoint or X-API-Key credits. [served by tools.moneytools.dev]

• robots_check

  May this user agent fetch this URL? RFC 9309 evaluation of robots.txt with the matching rule, crawl-delay, sitemaps, llms.txt presence and an allow/deny table for 12 AI crawlers. Free: 10 calls/day; then $0.001 via the HTTP endpoint or X-API-Key credits. [served by…

• json_schema_validate

  Validate JSON data against a JSON Schema (draft 4, 7, 2019-09, 2020-12) and get precise error paths. Use it to check tool outputs or API payloads. Free: 10 calls/day; then $0.001 via the HTTP endpoint or X-API-Key credits. [served by tools.moneytools.dev]

• time_convert

  op=now|convert|diff|add: current time in many zones, convert a local time between IANA zones (DST-aware), difference incl. business days, add ISO-8601 durations. Free: 10 calls/day; then $0.001 via the HTTP endpoint or X-API-Key credits. [served by tools.moneytools.dev]

• cron_next_runs

  Next N run times of a 5-field cron expression (or @daily etc.) in any IANA time zone, with a plain-language description. Free: 10 calls/day; then $0.001 via the HTTP endpoint or X-API-Key credits. [served by tools.moneytools.dev]

• currency_convert

  Convert fiat amounts with daily reference rates (ECB via Frankfurter; other currencies e.g. TWD from ExchangeRate-API open access, attributed). Not tradable quotes. Free: 10 calls/day; then $0.001 via the HTTP endpoint or X-API-Key credits. [served by tools.moneytools.dev]

• unit_convert

  Length, mass, volume, area (incl. 坪/ping), speed, time, data (KB vs KiB), energy, pressure, temperature and exact wei/gwei/ETH conversion. Free: 10 calls/day; then $0.001 via the HTTP endpoint or X-API-Key credits. [served by tools.moneytools.dev]

• hash_encode

  sha256/sha1/sha512/md5/keccak256, function selector, HMAC-SHA256, base64(url), hex, URL encoding, UUIDs, JWT decode (unverified), EVM checksum address. Free: 10 calls/day; then $0.001 via the HTTP endpoint or X-API-Key credits. [served by tools.moneytools.dev]

• qr_payment_link

  SVG QR code for any text/URL, or build an EIP-681 payment link + QR for a token amount to an address (for an agent asking a human to pay). We never receive the funds. Free: 10 calls/day; then $0.001 via the HTTP endpoint or X-API-Key credits. [served by tools.moneytools.dev]

• nft_metadata

  ERC-721/1155 token: standard, collection name, owner, tokenURI resolved (IPFS/Arweave/data URI) and the metadata JSON with image URL; says whether metadata is on-chain, IPFS or a mutable server. Free: 10 calls/day; then $0.002 via the HTTP endpoint or X-API-Key credits. [served…

• tx_status

  Is my transaction pending, confirmed, reverted or not found? Confirmations and a per-chain finality hint. Cheap polling for agents waiting on a tx. Free: 10 calls/day; then $0.001 via the HTTP endpoint or X-API-Key credits. [served by tools.moneytools.dev]

• block_at_time

  Find the last block at or before a date/time on any of 7 EVM chains (interpolation search). For historical balance queries, snapshots and log ranges. Free: 10 calls/day; then $0.001 via the HTTP endpoint or X-API-Key credits. [served by tools.moneytools.dev]

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