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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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968 results
Cult OS Developer ToolsCrypto & DeFiHash & Integrity
BaseSolanacultos.devfrom $0.00114 endpoints
Oblique MarketsSocial & peopleUse when an agent needs a trusted UTC timestamp or the smallest end-to-end test of its x402 payment client. Returns Current server time as ISO 8601 and Unix epoch milliseconds, returned only after a real settlement. $0.01.
BaseSolanaapi.oblique.marketsfrom $0.001165 endpoints- Wweb-searchCrypto & DeFi
Free-text web search for AI agents: ranked title/url/snippet results fused across multiple engines (Brave, Google, DuckDuckGo, Mojeek, Startpage, Yahoo), with freshness filters (past day/week/month/year), region/locale and SafeSearch. One call for grounded, up-to-date web results — no keys, no scraping setup.
Baseapi.agentstools.devfrom $0.001143 endpoints - Ttwin.unykorn.orgSocial & people
Gas price on Base and Ethereum in ONE call (legacy gas price + EIP-1559 priority fee, wei and gwei) — Genesis402 / UnyKorn Operator Network
BasePolygonSolana+1twin.unykorn.orgfrom $0.001276 endpoints - CClash of CoinsData & research
Low-cost gateway health probe for real x402 settlement checks
Basex402.clashofcoins.comfrom $0.0012 endpoints - SweetAIAI & agents
Check if an agent's reputation is real: Sybil forensics for one ERC-8004 AI agent — reviewer concentration, ghost reviewers, burst detection. Is this agent's feedback bought? No account, no API key
BaseSolanaPolygon+1sweetai.tiamatcrypto.comfrom $0.00230 endpoints - SStableSocialSocial & people
Scrape Creators · Instagram — Reels
SolanaBasestablesocial.devfrom $0.0648 endpoints - AApiToll Crypto PricesCrypto & DeFi
Latest crypto token prices by ticker symbol, CoinGecko id, or chain:address (BTC, ETH, SOL, or base:0x…): current spot price, token symbol, decimals, and a confidence score, for up to 50 coins in one call. Pass ?at=<unix> for the historical price at a point in time. Sourced from DefiLlama across every major chain.
BaseSolanacrypto.apitoll.cloudfrom $0.00111 endpoints
BitrefillSearch & webSearch 10,000+ gift card & voucher brands across 180+ countries by name and country. Pay in USDC via x402, no account.
BaseArbitrumPolygon+2api.bitrefill.comfrom $0.0018 endpoints
Agent Web-AccessImages, audio & videoWeb scraping API for AI agents: read any live web page as clean markdown, text or HTML. Renders JavaScript in our own headless browser, then strips navigation, ads and boilerplate. Use it when a plain HTTP GET returns empty or garbled HTML: single-page apps, dynamic feeds, or content that only appears after scripts run. Also returns the page's HTTP status. Page text is flagged untrusted so an agen
Baseweb.cyberwarex.comfrom $0.0016 endpoints- Aapi.blockchainmoneymap.comCrypto & DeFi
Grades paid MCP tool names, descriptions, schemas, and output labels for buyer-agent clarity.
Baseapi.blockchainmoneymap.comfrom $0.01109 endpoints - SStationFXCrypto & DeFi
Convert flat tabular JSON (array of objects, or {meta, data, result_type}) to TOON, a compact pipe-delimited text format with ~60-70% fewer tokens than JSON. $0.005 per call via x402 USDC on Base or Solana, or a bearer token.
BaseSolanastationfx.comfrom $0.00549 endpoints - FForest InfraCrypto & DeFi
Detect material public DNS answer changes with a deterministic hash. TTL-only changes do not count and no arbitrary resolver or AXFR operation is exposed. Base mainnet USDC
Basehttp--forest-gas-station-mainnet--lcjl27p8lmjs.code.runfrom $0.00197 endpoints - Ttick.hugen.tokyoCrypto & DeFi
Get real-time Best Bid/Ask for any FX pair, aggregated from multiple institutional liquidity providers. Includes quality metadata (fresh_sources, quality_state, spread_vs_single_source). Supports 29 FX pairs including EURUSD, USDJPY, GBPUSD, AUDUSD, AUDNZD, and XAUUSD. AI agent API for forex trading signals, portfolio valuation, price comparison, and arbitrage detection. Accepts USDC payments on B
BaseSolanatick.hugen.tokyofrom $0.0053 endpoints - Aapi.you.comSearch & web
You.com Search API: real-time web search returning ranked results grouped by section (results.web, results.news), each with url, title and description; web results also carry snippets. Use when an agent needs fresh, citable web data (news, markets, company facts) to ground a decision. Query params: query (required), count 1-100 (default 10), livecrawl (web|news|all; fetches live page contents, cha
BaseSolanaapi.you.comfrom $0.0052 endpoints - Aapi.locus.reportData & research
Returns cited land use, acreage, year built and legal jurisdiction for an address or jurisdiction-scoped parcel id. Returns the same records as locus_parcel_lookup. Use this when your client can only call paid x402 routes. Use locus-parcel-value instead when you need assessed value and sale fields from the resolved official parcel. Wired official parcel sources only. No owner or mailing fields.
BaseSolanaEthereum+10api.locus.reportfrom $0.0159 endpoints - SSiteCheck Health & TravelSearch & web
Live Bring a Trailer auctions (collector cars, motorcycles, parts), optionally filtered by words in the title (e.g. porsche 911) or no-reserve only: title, model year, current bid with currency, auction end time, no-reserve flag, country and listing URL, soonest-ending first, from BaT's public auctions page.
BaseSolanaEVM chain 5042+9api.healthtravel-api.workers.devfrom $0.002121 endpoints - RReadXSocial & people
Search for tweets by query (optional product filter; paginate with cursor). Example: GET /api/search/tweets?q=typescript
BaseSolanareadx.shfrom $0.0110 endpoints - Ppolynews.newsCrypto & DeFi
Smart money analysis: YES/NO concentration, sharp holders (track record), unusual-wallet anomalies, net flow, and directional lean. Anomaly intensity is NOT a trade recommendation.
BaseSolanapolynews.newsfrom $0.0016 endpoints - AAISkills402 API: JSONL RepairImages, audio & video
JSONL Repair API: turns broken JSON Lines (NDJSON) into one valid record per line - joins, splits, unwraps, drops fences and chat text, fixes quotes, keys, commas, Python literals; numbers copied as written. $0.003 USDC per call, no account, no language model: a cut-off record, repeated key or ambiguous leading zero gets a paid CANNOT REPAIR verdict. POST JSON {input} up to 60 000 chars; free exam
Baseapi.aiskills402.comfrom $0.003172 endpoints - Xx402.forgemesh.ioOther services
A daily rotating spotlight on one paid x402 endpoint from the ForgeMesh fleet: what it does, what it costs, its input schema, a sample response, and the exact call to make. Deterministic by UTC date, so agents and humans checking on the same day see the same pick. Optional date parameter (YYYY-MM-DD) previews past or future days. One call, one new capability discovered.
Basex402.forgemesh.iofrom $0.00159 endpoints
Laso FinanceCrypto & DeFiGet a Firebase ID token for authenticating with the callable APIs
BaseSolanalaso.financefrom $0.0016 endpoints
api.api-agent-ia.chAI & agentsWhat does a transaction on Base cost right now? Returns the current gas price and base fee in gwei, with the block number, cached for 5 s ($0.001 per call).
Baseapi.api-agent-ia.chfrom $0.00124 endpoints- SSiteCheck Agent Intel & DevCrypto & DeFi
Checks an x402 (HTTP 402 payment) endpoint before you pay: one unpaid GET, then the HTTP status, whether a 402 challenge with an accepts list is present, the payment networks, asset, price and pay-to address format, CORS header and response time. Does not pay, does not verify the seller's identity or reputation, and gives one sample, not uptime.
BaseSolanaEVM chain 5042+9api.fadeandco.workers.devfrom $0.002135 endpoints - HHALOWERK tempoImages, audio & video
Prüft am Objekt api-antwort den Befund Gesamtladezeit.
Basetempo.halowerk.comfrom $0.001100 endpoints - TTenPrintCrypto & DeFi
Attested Hedera network facts: HBAR exchange rate, gas fees, supply, node roster, throughput, topic state. Each response carries the ML-DSA-65 attestation ID of the served snapshot — tamper-evident reference data for agents that must prove what they knew when they acted.
BaseSolanaalgorandrubric-protocol.comfrom $0.00129 endpoints
AgentFeedImages, audio & videoSpot price: the on-chain DEX price for SOL, BTC or ETH, the median of deep USDC pools on Solana, Ethereum and Base read from chain state, and the pools that served it. Use when you need to answer: What is the spot price, without picking a venue? Any other symbol answers 400 with the supported list and is never billed.
SolanaBasePolygon+6x402.ochinimus.appfrom $0.00198 endpoints- Aapi.x-402.onlineImages, audio & video
Answer a question about an image, or describe it, from a URL or base64. Image understanding pay-per-call, no account and no API key: send an image URL (or base64) and an optional question, receive a plain-language answer from a multimodal…
BaseSolanaapi.x-402.onlinefrom $0.00561 endpoints - Ggateway.spraay.appDeveloper tools
Send email notification for payment confirmations, alerts, receipts.
BaseSolanaRobinhood Chaingateway.spraay.appfrom $0.00128 endpoints - My usage (wallet-keyed purchaseImages, audio & video
Your own purchase history, keyed to the wallet that pays for the call - no wallet parameter, no signup: the x402 payment IS the identity, so nobody can read another wallet's profile.
SolanaSeiAvalanche+8agent402.toolsfrom $0.001669 endpoints
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.