← Back to overview
Service Protocol Price Category Health Latency Source
Check a zone's SOA record through public resolvers: primary server, contact name... https://api.lookproof.dev/v1/dns/soa x402 $0.01 crypto/transactions healthy 292ms bazaar
Check an X-Escrow before you deliver paid work, via Liquid Logic X: send chain +... https://audit.liquidlogicx.com/api/escrow-status x402 $0.0050 crypto/wallet healthy 467ms bazaar
Check an agent wallet's x402 spend cap before it pays, via Liquid Logic X: send ... https://audit.liquidlogicx.com/api/allowance x402 $0.0010 crypto/wallet healthy 270ms bazaar
Check an anonymously readable OCI image tag and resolve its manifest digest thro... https://http--forest-gas-station-mainnet--lcjl27p8lmjs.code.run/container/tag-state x402 $0.0020 media/images healthy 114ms bazaar
Check an exact dependency version for known OSV vulnerabilities https://hermes-counterparty-api.onrender.com/v1/dependency-vulnerability-check x402 $0.0050 Software Security healthy 463ms self-registered
Check an invoice status and, with SIWX from the paying wallet or the Lightning p... https://api.bitrefill.com/x402/invoice/status x402 $0.0010 crypto/wallet healthy 394ms bazaar
Check an unsigned Base mainnet transaction before signing or broadcasting. Simul... https://machinemint-native-x402-production.up.railway.app/v1/base-preflight x402 $0.01 crypto/transactions healthy 257ms bazaar
Check an unsigned Solana transaction before signing. Send its base64 serializati... https://getrugshield.com/v1/tx-guard x402 $0.01 crypto/balances healthy 381ms bazaar
Check an x402 endpoint before paying it. Give it any x402 URL: it makes the unpa... https://xhagents.xyz/api/x402-trust x402 $0.05 crypto/wallet healthy 1258ms bazaar
Check an x402 settlement on Base (chain 8453): tx exists/succeeded, USDC Transfe... https://x402-research-iota.vercel.app/api/x402/settlement-status x402 $0.02 crypto/transactions healthy 410ms bazaar
Check answer. Splits an AI answer into claims and checks each against Wikipedia,... https://claim-grounding.prospectintel.workers.dev/v1/check_answer x402 $1.00 real-time-data/news healthy 371ms bazaar
Check before paying any x402 tool: is this API a scam/safe? Trust-check one sell... https://x402check.dev/preflight x402 $0.01 crypto/wallet healthy — bazaar
Check before you pay an agent: pass ?url=<x402 endpoint>, ?address=<0x payTo or ... https://apexfaucet.xyz/api/x402/agent-trust x402 $0.0050 crypto/wallet healthy 518ms bazaar
Check before you pay or trade: pass / review / block for one wallet or contract ... https://twin.unykorn.org/check/address x402 $0.01 crypto/wallet healthy 277ms bazaar
Check if a URL is a known crypto phishing or scam site — covers fake DEX fronten... https://defi.hugen.tokyo/defi/phishing x402 $0.01 crypto/wallet healthy 1018ms bazaar
Check if a contract is safe before interacting or signing a transaction on Base.... https://www.tereno.xyz/api/v1/capabilities/contract.guard/invoke x402 $0.01 crypto/transactions healthy 285ms bazaar
Check if a crypto-asset service provider (CASP/VASP) is authorized under the EU ... https://api.strale.io/x402/v2/vasp-verify x402 $0.02 tools/search healthy 184ms bazaar
Check if a token is a scam https://api.gadgethumans.com/is-token-a-scam L402 $0.0020 crypto/token-safety healthy — self-registered
Check if a token is a scam (x402) https://api.gadgethumans.com/is-token-a-scam x402 $0.0020 crypto/token-safety healthy — self-registered
Check if two images are duplicates or near-duplicates. Compares two image URLs w... https://api.kakerapetit.dev/v1/check-duplicate-image x402 $0.0050 media/images healthy 868ms bazaar
Check live ERC-20 and Permit2 allowances with risk flags and unsigned revoke tra... https://tanod.dev/v1/chain/approvals x402 $0.0050 crypto/transactions healthy 837ms bazaar
Check one public static HTML page for observed HTTP status, title/description/ca... https://api.mekler.ai/v1/web/seo/check-page x402 $0.0050 media/images healthy 670ms bazaar
Check one structured public or synthetic low-stakes experiment plan for timing, ... https://www.mahastrategies.com/api/v1/celestial/experiments/plan-check x402 $0.01 crypto/defi healthy 304ms bazaar
Check that everyone in an agent session still qualifies, right now. Every member... https://skyemeta.com/api/agenttalk/session x402 $0.15 crypto/wallet healthy 453ms bazaar
Check that everyone in an agent session still qualifies, right now. Every member... https://agenttalk.skyemeta.com/api/agenttalk/session x402 $0.15 crypto/wallet healthy 437ms bazaar
Check that everyone in an agent session still qualifies, right now. Every member... https://skyeskiff.skyemeta.com/api/skyeskiff/session x402 $0.15 crypto/wallet healthy 429ms bazaar
Check the native ETH balance or gas balance of a Base wallet address. Use this t... https://blockchain-api.x402-chain-tools.workers.dev/chain/balance x402 $0.0010 crypto/wallet healthy 604ms bazaar
Check the status of a Base transaction: success/reverted/pending, confirmations,... https://quartermaster.surewhynot.app/v1/tx x402 $0.0020 crypto/transactions healthy 263ms bazaar
Check up to ten declared claim-evidence relationships against a finite, versione... https://www.mahastrategies.com/api/v1/micro/evidence-frame-compatibility x402 $0.01 crypto/transactions healthy 383ms bazaar
Check up to ten declared claim-evidence relationships against a finite, versione... https://www.mahastrategies.com/api/v1/context/evidence/frame-compatibility x402 $0.01 crypto/transactions healthy 428ms bazaar
Check wallet address for malicious activity indicators using GoPlus Labs threat ... https://www.brainiac.software/api/v1/wallet-intelligence/security/address x402 $0.05 crypto/wallet healthy — bazaar
Check wallet address for risky token approvals and permissions using GoPlus Labs... https://www.brainiac.software/api/v1/wallet-intelligence/security/approvals x402 $0.05 crypto/wallet healthy — bazaar
Check whether a Base transaction settled x402 payments (USDC transferWithAuthori... https://base.kagurazaka.dev/v1/x402-payment x402 $0.0010 crypto/transactions healthy 380ms bazaar
Check whether a country or region carries sanctions designations, such as compre... https://api.compliapi.com/api/v1/screen/country/:country x402 $0.01 crypto/transactions healthy 465ms bazaar
Check whether a customer has enough tokens and eligibility to redeem a reward. O... https://api.loyalspark.online/x402-gateway/recipient-api/workflow/reward-status x402 $0.0010 crypto/wallet healthy 446ms bazaar
Check whether a domain's published policy permits AI use of its content before y... https://x402.forgemesh.io/domain-content-signals x402 $0.0050 tools/search healthy 572ms bazaar
Check whether a mined Base transaction did what your agent meant it to do. Fetch... https://receipt.schemasure.com/v1/tx/receipt-verify x402 $0.02 crypto/transactions healthy 574ms bazaar
Check whether a phone number appears in criminal marketplace infrastructure or p... https://api.relayshield.net/v1/payg/phone-reputation x402 $0.05 crypto/defi healthy 538ms bazaar
Check whether a wallet currently holds a valid, unexpired Wicked Identity agent-... https://verify.wickedapi.com/verify/status/:wallet x402 $0.0010 crypto/wallet healthy 204ms bazaar
Check whether a wallet is KYC-eligible for a gated (RWA / tokenized-treasury) yi... https://mcp.yield.xyz/x402/yields_get_kyc_status x402 $0.0010 crypto/wallet healthy 167ms bazaar
Check whether an approved Base token swap is eligible before supplying a wallet.... https://api.usesaferoute.com/v1/swap-safety-check x402 $0.0010 crypto/defi healthy 410ms bazaar
Check whether an icon you already have meets real platform rules — W3C maskable ... https://imagcon.app/routes/x402/check-icon x402 $0.01 media/images healthy 366ms self-registered
Check whether tokens left a wallet through transactions it did not send, with no... https://tanod.dev/v1/chain/drain-check x402 $0.0020 crypto/balances healthy 884ms bazaar
Checks 2 to 10 Ethereum wallets for shared counterparties: addresses that severa... https://api.fadeandco.workers.dev/api/agent-intel/sybil-airdrop-farmer-check x402 $0.0020 crypto/transactions healthy 402ms bazaar
Checks XML tag nesting and reports mismatched or unclosed tags 🆓 5 free trial c... https://minia2a.uk/x402/xml-validate x402 $0.01 crypto/wallet healthy 408ms bazaar
Checks a web page for accessibility (a11y) problems from caller-supplied HTML: d... https://api.ozdreamtools.de/api/bfsg/check x402 $0.10 media/images healthy 1019ms bazaar
Checks any Shopify store you give it for evidence-based dropshipping signals (Al... https://agent-data.centorprat.workers.dev/tools/shopify-dropshipping-checker x402 $0.01 tools/search healthy 491ms bazaar
Checks for an x402 seller wallet on Base: the services that pay out to it and th... https://api.annalist.dev/v1/checks/seller x402 $0.01 crypto/wallet healthy 215ms bazaar
Checks how well a Shopify store's products show up when AI shopping assistants s... https://shopify-ai-rank-checker.underscoredone.com/rank x402 $0.01 tools/search healthy 424ms bazaar
Checks media mentions and RSS news buzz matching the company name. https://bizintel-api.hahavoid0.workers.dev/company/news-buzz x402 $0.02 real-time-data/news healthy 796ms bazaar