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Every pay-per-call x402 API we can find, ranked by what agents actually pay for. No accounts, no API keys.
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Crypto & DeFi
1,023 results- AAsia PulseCrypto & DeFi
Asia-session snapshot: kimchi premium for 8 coins, BTC and ETH funding, BTC regime classification, US Treasury 5y/10y/20y and 2s10s, Fed dollar indexes, Asian FX, US crypto regulation filings, and events with results.
X LayerBaseasia-pulse.comfrom $0.031 endpoint - Xx402 Intelligence APICrypto & DeFi
x402 market intelligence with current catalog-attributed USDC flow, address-level demand signals and separately labeled value-matched history. The headline covers Base only (market.universeChains); the multi-chain picture ships alongside it as ecosystem, split into an RPC-proven floor and an indexed upper bound that are not additive (notASum). Attribution is not exclusive protocol-intent proof.
Baseapi.x402intel.ukfrom $0.051 endpoint - WWalletTriageCrypto & DeFi
WalletTriage — real-time wallet risk check: dangerous ERC20 approvals cross-referenced with a live exploit threat feed. Returns risk_score (0-100), risk_level and actionable findings.
Baseapi.wallettriage.comfrom $0.011 endpoint - Ttokenplans.devCrypto & DeFi
Full JSON catalog of verified AI coding-subscription plans across 31 providers (Claude, OpenAI, Cursor, Gemini, and more). Each record: monthly price and cadence, included models, usage ceilings and rate-limit windows, coding-tool lock-in, and pricing provenance with lastChecked dates. Use it to pick the right plan for an agent workload or to compare providers.
Baseapi.tokenplans.devfrom $0.101 endpoint - Aapi.relayshield.netCrypto & DeFi
Scan a URL for phishing or malware using heuristic signals (Google Safe Browsing, RDAP domain age, known IOC corpus) plus VirusTotal multi-engine analysis. Returns an async analysis ID to poll. Call before an agent clicks, fetches, or shares a link from an untrusted source.
BaseSolanaapi.relayshield.netfrom $0.053 endpoints - OOrionCMD ChecksCrypto & DeFi
OrionCMD Checks: Prepaid domain threat watch: up to 25 domains for 30 days, webhook alerts. Pay once; each domain is re-checked about once a day for 30 days. You get an HMAC-signed JSON POST at your https webhook_url (event watch.changed) when a domain or its IPv4 appears in (or leaves) ThreatCluster's high-confidence IOC feed, when a new ransomware leak-site claim names it, when its A/NS/MX recor
Baseapi.orioncmd.comfrom $0.0112 endpoints
MACH BaseCrypto & DeFiVerify an onchain payment or investigate a failed Base transaction in one call with transaction, receipt, success status, confirmations, gas and fee context.
Baseapi.mach.galleryfrom $0.0052 endpoints- DDataSieveCrypto & DeFi
Something you cannot do while your agent is dead: keep watching. One paid call buys 7 days of it — on-chain on Base (wallet activity, whale transfers, price crossings, new pools), a dead-man switch that fires when YOUR agent goes silent, a cron/schedule webhook, or a url-change web monitor. Every event carries a signed Ed25519 receipt proving a third party observed it then — which your own logs ca
Baseapi.datasieve.xyzfrom $0.101 endpoint - Aapi.cybersecurity-japan.comCrypto & DeFi
Check a public website's security hygiene before your agent links to it, recommends it, or sends data to it. One URL in, deterministic JSON out: HTTPS and redirect chain, HSTS, CSP, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy, security.txt, robots.txt, sitemap.xml, plus plain-language notes. Private, localhost and raw-IP targets are rejected; error responses are no
Baseapi.cybersecurity-japan.comfrom $0.051 endpoint
BotPay NFT MintCrypto & DeFiMint a BotPay NFT on Base after an x402 USDC payment.
BaseSolanaapi.botpay.networkfrom $0.013 endpoints
Generative glyph from verifiableCrypto & DeFiGenerative glyph artwork from verifiable randomness: pass a drand quicknet round number (League of Entropy, one every 3 s) and get its 512x512 SVG drawn by fixed published rules (apexfaucet.xyz/door/glyph.js), the round randomness and BLS signature, and a SHA-256 receipt of the SVG. Anyone can redraw it exactly. From THE DOOR, an open experiment at apexfaucet.xyz/door/.
BaseEVM chain 5042Solana+1apexfaucet.xyzfrom $0.001142 endpoints- 4402atlas.comCrypto & DeFi
Which x402 services actually deliver — every one paid-tested with real USDC, receipts on-chain.
Base402atlas.comfrom $0.101 endpoint - 33-140-99-145.sslip.ioCrypto & DeFi
Checks a list of payment records for common reconciliation bugs: payments marked settled without an on-chain reference, payer or payee stored as a display name instead of an address, idempotency keys that let the same payment through twice, and ledger counts that differ from the chain scan. Returns the findings per row.
Base3-140-99-145.sslip.iofrom $0.051 endpoint - WWicked IdentityCrypto & DeFi
Check whether a wallet currently holds a valid, unexpired Wicked Identity agent-liveness assertion.
Baseverify.wickedapi.comfrom $0.0011 endpoint - Ccode402 Chain DataCrypto & DeFi
Latest Ethereum block height
Baseverify.code402.devfrom $0.0051 endpoint - Vverdict.genexxis.comCrypto & DeFi
Shareable verdict card for a Base or Solana token: grade BASED/MID/COOKED/RADIOACTIVE, 0-100 score, one-liner, reasons, key market metrics, plus a share URL and a 1200x630 PNG. Body {"tokenAddress":"0x..."} or {"chain":"solana","tokenAddress":"<mint>"}.
Baseverdict.genexxis.comfrom $0.501 endpoint - Ttollbooth-sanctions-screener.sjwilliams8.workers.devCrypto & DeFi
Before your agent onboards, pays, or contracts with a counterparty: screen the name against the U.S. Treasury OFAC sanctions lists (SDN + Consolidated non-SDN, synced every 6h) for $0.01. Benchmarked 114/114 sanctioned names found with zero false positives on a 152-case adversarial corpus of misspellings, word-order swaps, and transliterated aliases. Ranked candidates with confidence 0-100, progra
Basetollbooth-sanctions-screener.sjwilliams8.workers.devfrom $0.011 endpoint - Pprotocol-tvl-brief.x402supply.comCrypto & DeFi
Compact DeFi protocol brief by slug or name: current TVL, 1d/7d/30d TVL change, TVL by chain, category, chains, audit links, fees and revenue for 24h/7d/30d where available, DefiLlama URL. Data by DefiLlama. Not financial advice.
Baseprotocol-tvl-brief.x402supply.comfrom $0.011 endpoint - Llounge.genexxis.comCrypto & DeFi
24-hour pass to The Agent Lounge, a forum where AI agents meet: swap notes on x402 services, find collaborators, show what they built, or just chat. Returns a bearer token for posting and full history.
Baselounge.genexxis.comfrom $0.101 endpoint - AAgent-Cron-ServiceCrypto & DeFi
Agent-Cron-Service: schedules a recurring trigger (crontab expression, timezone-aware) delivered to a verified webhook or email, paid per trigger in USDC. POST the job definition; the 402 quotes the exact price.
Baseapi.x402cron.comfrom $0.101 endpoint
ProofableCrypto & DeFiCreate a signed proof for a wallet that anyone can verify offline.
Baseapi.proofable.mefrom $0.011 endpoint- MMoltGuardCrypto & DeFi
Wallet risk score 0-100 with component breakdown for an EVM address.
Baseapi.moltrust.chfrom $0.051 endpoint - AAcePilotCrypto & DeFi
Concentrated-liquidity range evidence for one Aerodrome Slipstream pool on Base: the narrowest price range that stayed in range for a target share (80/90/95 %) of the last 24-720 h, with in-range %, out-of-range episodes, hourly coverage and block-level evidence from on-chain observations. Useful when choosing or re-centring an LP range. Refused or stale queries return 4xx/503 before any payment.
Baseaeroacepilot.xyzfrom $0.041 endpoint - ZZeroWorker MCP Trust GateCrypto & DeFi
MCP security checks and feedback for users and developers. Choose paid access without reports, or ongoing free access within limits: POST /v1/client-token; 1 check/24h + 1 for a previous-use report. Check URL/DNS, metadata/schema/auth, OSV/CVE risk and catalog drift before connecting. Verified owners can read consented weekly reports. ALLOW/BLOCK/UNKNOWN uses caller-confirmed versions. No tool exe
BaseSolanazeroworker-mcp-preflight-api.zeroworker-lab.workers.devfrom $0.0051 endpoint - Xx402.fablerlabs.comCrypto & DeFi
Scan text for accidentally-committed secrets (API keys, tokens, private keys) before you publish it.
Basex402.fablerlabs.comfrom $0.0014 endpoints - Xx402-v2-mint-zenodo-record-lookup.vercel.appCrypto & DeFi
Zenodo records lookup (keyless). POST {q} and/or {record_id?,size?}. Empty → 404 not charged. Board swap vs openfda-device-event.
Basex402-v2-mint-zenodo-record-lookup.vercel.appfrom $0.021 endpoint - Xx402-v2-mint-openssf-scorecard.vercel.appCrypto & DeFi
OpenSSF Scorecard repo supply-chain health (keyless). POST {platform}/{org}/{repo} required. Empty -> 400 not charged. osv-vuln-query/nist-nvd-cve-lookup adjacency disclosed.
Basex402-v2-mint-openssf-scorecard.vercel.appfrom $0.021 endpoint - Xx402-v2-mint-openalex-institutions.vercel.appCrypto & DeFi
OpenAlex institutions search (keyless; disclose OpenAlex adjacency). POST {q|search|query}/{per_page?}. Empty -> 400 not charged. Board W45 swap for gtex.
Basex402-v2-mint-openalex-institutions.vercel.appfrom $0.021 endpoint - Xx402-v2-mint-monarch-search.vercel.appCrypto & DeFi
Monarch Initiative search (keyless; OLS-adjacent caution). POST {q|query}/{limit?}. Empty -> 400 not charged. Board W45 swap for hpo.
Basex402-v2-mint-monarch-search.vercel.appfrom $0.021 endpoint - Xx402-v2-mint-mealdb-search.vercel.appCrypto & DeFi
TheMealDB recipe/meal search (keyless). POST {s|q|name}. Unpaid empty → 402; after settle empty/invalid → 400 charged:false. New meal/recipe lane; cocktail-search soft swap only (do not mint cocktail).
Basex402-v2-mint-mealdb-search.vercel.appfrom $0.021 endpoint
Service data comes from the Coinbase CDP and PayAI discovery lists and refreshes every few hours. Usage is paid calls over the last 30 days. APIs launched here are verified by us; the rest are paid directly to their owners.