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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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2,776 results- Wwazir-x402.duckdns.orgData & research
PoolTogether draw scan data
Basewazir-x402.duckdns.orgfrom $0.0013 endpoints - Nnojunk-geo.mick8511.workers.devData & research
Geocoding & Weather geocode: Place name or address -> coordinates, structured address and bounding box (OpenStreetMap Nominatim).
Basenojunk-geo.mick8511.workers.devfrom $0.0023 endpoints - EExpand / compress IPv6Other services
Return both the fully-expanded (eight 4-hex groups) and canonical compressed (RFC 5952) forms of an address. IPv4 is returned unchanged in both fields.
Baseip.openverbs.comfrom $0.0024 endpoints - LLoan amortizationMarkets & finance
Compute the level monthly payment, total paid and total interest of a fully-amortizing loan. Handles a 0% rate. Set schedule=true to also return the full month-by-month amortization table.
Basefinance.openverbs.comfrom $0.0046 endpoints
PayPerScreenCrypto & DeFiIP risk check (beta) for logins and checkouts: is a public IPv4 address on the Spamhaus ZEN blocklist (spam, botnets, hijacked networks) or a Tor exit node? Includes the network owner. Returns a low, medium or high risk level.
BasePolygonArbitrumapi.payperscreen.comfrom $0.015 endpoints
AI Money - Africa FXMarkets & financeOfficial FX rate — one African pair. Official forex reference rate vs USD for one African currency: KES (Kenyan shilling), NGN (naira), GHS (cedi), TZS, UGX, ZAR, EGP, RWF, via Frankfurter (frankfurter.dev). Frankfurter blends published central-bank reference rates; the number is that blend, not a single central-bank fixing. Each response names the source and carries as_of (Frankfurter's rate date
Baseagents.nibiashara.bizfrom $0.013 endpoints
Ichimoku SignalCrypto & DeFiBitcoin and crypto trend signal: is a pair bullish, bearish or neutral right now? From the Ichimoku Cloud (cloud position, tenkan/kijun cross) for BTC, ETH, SOL or any top-200 coin on any interval, from live candles on Binance.US, Kraken, Gate or MEXC.
BaseSolanaxrpl+4ichimoku-signal.fizzl.eufrom $0.015 endpoints- EElements LiveData & research
Lab quote: a filter query (+must -exclude "topic" (a OR b) wild* year:a..b) in; matching paper volume by year and research community, and a binding price per deliverable out.
BaseSolanaelements-live.comfrom $0.012 endpoints - Eeconomy.openverbs.comMarkets & finance
Country inflation and CPI history from World Bank WDI: annual consumer-price inflation (%) and consumer price index (2010=100), by ISO3 country for the last 1-10 complete years. Includes independent latest values, units, nulls, source update date and IMF/CC BY attribution. Annual history, not monthly releases or forecasts; CPI levels do not compare prices across countries.
Baseeconomy.openverbs.comfrom $0.0044 endpoints - Bbase-intel-api.jakemaxsigal.workers.devCrypto & DeFi
Base gas oracle / Base gas price API / Base L2 gas fee tracker / real-time gas estimator / swap cost estimator. Returns the current Base fee, fast/standard/slow priority tiers, the USD cost of a typical swap, and a congestion recommendation. For AI agents, trading bots, and wallets timing transactions on Base to minimize gas.
Basebase-intel-api.jakemaxsigal.workers.devfrom $0.0023 endpoints - Aapi2ls.comOther services
Get live EVM gas pricing with EIP-1559 breakdown and USD cost estimates
BaseSolanaapi2ls.comfrom $0.012 endpoints - Sseo.halowerk.comOther services
About page discovery repair plan fetches current public evidence from the supplied target and evaluates the documented criterion. It returns the observation, threshold, verdict, exact evidence source, limitations and a mode-specific action. The check is passive: no login attempt, payload injection, exploit, purchase, form submission or load test is performed.
Baseseo.halowerk.comfrom $0.0015 endpoints - RRC Quantum Data OracleMarkets & finance
Compact BTC funding regime state from a four-venue normalized surface: regime label, surface median, 30d z-score, same-sign share, spread, dispersion, venue count, freshness. Ed25519-signed. Data, not advice.
Basedata.rcqsignals.comfrom $0.013 endpoints - Aapi.thetrustlayer.xyzSocial & people
Agent profile lookup. Returns trust score, component breakdown, feedback counts, and metadata for any ERC-8004 agent.
Baseapi.thetrustlayer.xyzfrom $0.0014 endpoints
chainquery Bitcoin RPCCrypto & DeFichainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. Currently banned peer IPs and subnets from chainquery's independent full node. Bitcoin Core listbanned.
Basex402.chainquery.comfrom $0.0053 endpoints- Ppulsefeed.devCrypto & DeFi
Is this x402 endpoint safe to pay? Vet an unknown seller BEFORE paying: pay/avoid verdict, 0-100 trust score, live 402 probe, scam flags (payTo hijack, bait-and-switch pricing, honeypot, wrong asset) and an on-chain check of the receiver on Base. Reads x402 v1 (body) AND v2 (PAYMENT-REQUIRED header) — body-only checkers call live v2 services dead. ?endpoint=url; omit for a trust-ranked catalog.
Basepulsefeed.devfrom $0.0041 endpoint - GGDELT Global News IntelligenceSearch & web
Global news article search by GDELT — normalized fulltext search across worldwide media (query syntax: phrases, OR, sourcecountry, theme, tone) returned as a clean snake_case envelope.
BasePolygonArbitrum+1gdelt.use.x402atlas.comfrom $0.0052 endpoints - Ccryptoshark.duckdns.orgCrypto & DeFi
Current USD market snapshot for a supported cryptocurrency symbol or CoinGecko asset name
Basecryptoshark.duckdns.orgfrom $0.0012 endpoints
BlackForgeCrypto & DeFiBlackForge crypto market data from the major spot exchanges: every column, 1-minute to daily buckets, 90-day lookback. Covers 100 billable rows; finer buckets and premium columns count as more than one row each.
BaseArbitrumPolygonapi.blackforge.sofrom $0.0052 endpoints- SStableUploadDeveloper tools
Buy a site upload slot. Upload a zip file, then activate to extract and serve as a static site.
SolanaBasestableupload.devfrom $0.0052 endpoints - SSSL/TLS Certificate CheckCrypto & DeFi
SSL/TLS certificate check: expiry, issuer, SANs, chain validity, hostname match, negotiated protocol/cipher, and weak-algo warnings for a public HTTPS host. Clean JSON.
BasePolygonArbitrum+1ssl.use.x402atlas.comfrom $0.011 endpoint - Ccryptonews.genexxis.comCrypto & DeFi
Crypto headlines of the last 72 h matching keywords or tickers (all words must match; tickers and asset names like ETH/ethereum map to tags), newest first, with corroboration count.
Basecryptonews.genexxis.comfrom $0.0032 endpoints - AAdler-32Crypto & DeFi
Adler-32 checksum (as used by zlib) over the input payload. Faster than CRC-32 but weaker for short inputs. Returns the checksum as an unsigned integer and 8-digit hex. Non-cryptographic.
Basechecksum.openverbs.comfrom $0.0024 endpoints - 4402registry catalogImages, audio & video
Catalog snapshot: every site in the 402registry catalog of sites verified visible to AI crawlers, as one JSON file rendered at purchase, every record dated. Basic fields are free at https://402registry.com/registry.json; this adds per site the findings by name and severity, the stack, the title and what the crawler saw without JavaScript (AI bot status codes, robots, sitemap, llms.txt). No input:
Base402registry.comfrom $0.0052 endpoints - UUseless FactOther services
Pay a tiny amount of USDC and receive one delightfully useless fact.
Basex402uselessfacts.vercel.appfrom $0.0011 endpoint - Iintel.genexxis.comOther services
Find the best x402 endpoints for a task. Returns sellers ranked by proven demand (30-day unique payers, repeat calls per payer, scanner traffic filtered), price, and the cheapest proven alternative.
Baseintel.genexxis.comfrom $0.0083 endpoints - Aalmanac.locomot.ioOther services
Deterministic citation formatter — APA 7, MLA 9, Chicago 17 author-date, BibTeX. From structured fields, returns the reference entry (markdown/html/plain) + the in-text citation, reproducing published style-manual examples exactly. For full author lists use POST. Every answer signed. Free sample, no payment required: GET /play/cite
Basealmanac.locomot.iofrom $0.0011 endpoint - AAgentDrivesSocial & people
Find the SaaS tools and APIs an AI agent can use on its own for a task, such as "send an invoice". Each result gives the tool's agent level (0 to 5), whether an agent gets in without a person, what our agent got done in it and where it stopped, from a real drive of the product. $0.01 a search.
Baseagentdrives.comfrom $0.012 endpoints - Aagent-sec-lookup.iykykblog.workers.devSocial & people
Look up SEC EDGAR company information by ticker, CIK, or company name. Returns company profile and recent filings.
Baseagent-sec-lookup.iykykblog.workers.devfrom $0.0051 endpoint - NNythosX Agent ToolsCrypto & DeFi
USD price of a chain's native token, no gas data. Just the native-token USD price (ETH, POL or SOL), sourced from MEXC/Gate.io/Coinbase with the same price feed get_gas_price uses. Use this when you only need the asset price, not fees — get_gas_price and compare_gas_costs already return nativeUsd alongside gas data, so call this instead only to skip the gas lookup (e.g. valuing a wallet balance, n
Basetools.nythosx.comfrom $0.0013 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.