Explore APIs
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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- Paid calls · 30 days
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4,150 results- Ffuelscout.scalpstream.comData & research
FuelScout cheapest-fuel query (station-level where open data exists, regional averages otherwise)
BaseArbitrumPolygon+2fuelscout.scalpstream.comfrom $0.011 endpoint - VVetPulseAI & agents
Veteran discount finder for veteran and VA-benefits agents. Returns retail, dining, travel, recreation-access, and regional programs most veterans never claim — covering US, UK (Defence Discount Service/Blue Light Card), Canada, Australia (RSL), New Zealand (RSA), and Germany.
BaseSolanaPolygon+8api.vetpulse.theaslangroupllc.comfrom $0.058 endpoints - UUS GeographyData & research
Great-circle (haversine) distance between two coordinates in km, miles and nautical miles, with bearing and midpoint.
BaseSolanaPolygon+1geo-us.x402tookit.comfrom $0.026 endpoints
Live Open Data India & WorldMarkets & financeOfficial government and open data API: 94 public sources in one endpoint, 51 real-time, across India, Europe, Asia, Africa and Latin America. India: disaster alerts, CPI inflation, GDP, jobs, IFSC. World: earthquakes, weather forecasts and warnings, train and transit departures, flight and ship tracking, fuel and electricity prices, exchange rates, public tenders, company registries, geocoding, pu
Baseapi.jexxa.orgfrom $0.0051 endpoint
notary.genexxis.comDeveloper toolsCurrent UTC time (ISO and unix ms) signed by the genexxis notary key, with the signed message and signature for independent verification.
Basenotary.genexxis.comfrom $0.0032 endpoints
ciaudit.genexxis.comOther servicesLint a GitHub Actions workflow: actions not pinned to a commit SHA, missing or write-all permissions, pull_request_target with PR head checkout, script injection via event fields in run, secrets on the command line, curl|bash, self-hosted runners, deprecated set-output.
Baseciaudit.genexxis.comfrom $0.0083 endpoints- WWorld Bank Country DataSocial & people
Rank up to 6 countries on one indicator (GDP, growth, inflation, unemployment...) with the year of each value.
BaseSolanaPolygon+1world-bank.x402tookit.comfrom $0.027 endpoints - WWikidata FactsSocial & people
Country profile from Wikidata: capital, population, area, languages, currency, leaders, ISO codes, borders, with property ids.
BaseSolanaPolygon+1wikidata-facts.x402tookit.comfrom $0.037 endpoints - TThink and Grow WealthyImages, audio & video
A short coaching reflection on what you are working through. Send JSON with a text field. The reply acknowledges you, reframes the moment, offers one concrete next action, and closes with an affirmation signed Continue to Think and Grow Wealthy.
Basetgw-mindset-api.fly.devfrom $0.027 endpoints - Ooyapicks.appOther services
OyaPicks: recently resolved prediction markets and their winning outcome
Baseoyapicks.appfrom $0.032 endpoints - Aapi.agentinternetruntime.comOther services
SDK capabilities query ($0.01/request direct, or $0.003/request via Session Ticket at /v1/billing/tickets)
Baseapi.agentinternetruntime.comfrom $0.014 endpoints
AgentTalkCrypto & DeFiBefore your agent negotiates or shares data with another agent, make both prove they qualify. Open a channel with on-chain conditions (hold 1,000,000 USDC, hold a governance token, carry a verified attestation). Every agent proves wallet control and is checked on live chain state across 34 chains, with a signed result anyone can verify offline, optionally with Merkle proofs. Re-check on demand; wh
BasePolygonArbitrumagenttalk.skyemeta.comfrom $0.153 endpoints- CCloudflare APIImages, audio & video
Extract clean Markdown from any URL. Renders JavaScript before extraction.
Basestableflare.devfrom $0.022 endpoints - Ggsc-x402.aiAI & agents
GSC's payment door — a real one-cent settlement on Base, signed receipt returned. Prove your agent's payment stack here.
Basegsc-x402.aifrom $0.011 endpoint
SellatCrypto & DeFiTimestamp and notarize any file or data by its SHA-256 hash: blockchain proof of existence and document integrity, anchored on Polygon in minutes and attested on Bitcoin (OpenTimestamps); blockchain notarization, not a notary act. Returns proof_id, certificate, proof.json and evidence ZIP, verifiable without Sellat. Use when you must prove that exact data existed by now and is intact.
Basesellat.appfrom $0.012 endpoints- Rredlynr.comCrypto & DeFi
Agent guardrail decision engine. Call once before every agent action; returns a single decision — proceed, slow down (with a reason and wait time), or stop — based on cost budget, chain depth, step cap and retry budget, and request volume pressure. Policy thresholds are configured separately via /policy; this endpoint only reports the decision for a single action.
Baseredlynr.comfrom $0.0011 endpoint - RReceiptSureAI & agents
Check whether a mined Base transaction did what your agent meant it to do. Fetches the receipt, decodes its ERC-20, ERC-721 and ERC-1155 transfer and approval logs, and reports each declared movement as matched, missing or short, with the observed amount beside the expected one. Catches reverts, success with no effect, fee-on-transfer skims and transfers to recipients you never named. Returns unkn
Basereceipt.schemasure.comfrom $0.021 endpoint - CChainStateSocial & people
Profile a Base address in one call instead of four to six lookups. Returns contract or externally owned plus code size, proxy detection across all seven slot layouts including the legacy OpenZeppelin slot Base USDC uses, the resolved implementation, ERC-165 and behavioural ERC-20 detection, token metadata, requested ERC-20 balances, and denylist hits. Answers unknown rather than guessing, and null
Basechainstate.schemasure.comfrom $0.021 endpoint - HHALOWERK x402werkCrypto & DeFi
Asks every known facilitator what it supports and measures how long that answer takes. Reachability, supported chains, supported assets, supported schemes and the current response time are measured live on every call. Limits, and they are the important part: error rate over 24 hours, uptime over 7 days and latency percentiles CANNOT be delivered. They require a series of own measurements every few
Basex402.halowerk.comfrom $0.0023 endpoints - VVenturePulseMarkets & finance
Real-time VC funding-round intelligence by sector, stage and region — recent deals, active investors, valuation benchmarks and funding climate. For founder and VC agents.
BaseSolanaPolygon+8venturepulse.theaslangroupllc.comfrom $0.1010 endpoints - SScholarPulseSocial & people
Scholarship search for student and scholarship agents. Returns matched scholarships by academic profile, major, country, and level.
BaseSolanaPolygon+8scholarpulse.theaslangroupllc.comfrom $0.0813 endpoints - BBounded Decision SolverData & research
Weighted interval scheduling solver — exact maximum-weight compatible job scheduling with half-open intervals and a complete dynamic-programming certificate.
BasePolygonArbitrum+1decision-solver.use.x402atlas.comfrom $0.0054 endpoints - BBitcoin Tech Radar - Aaron ZhangDeveloper tools
Status of every Bitcoin Improvement Proposal as JSON: number, layer (consensus soft fork, peer services, applications), title, type and status (Draft, Complete, Deployed, Closed...), with links. Parsed live from the bitcoin/bips repository index, plus counts by status.
BaseBase Sepoliabtc-radar.vercel.appfrom $0.013 endpoints - Bbruk-agent-api.fly.devCrypto & DeFi
Checks whether an XRP Ledger token issuer is who it claims to be: two-way domain verification (on-ledger Domain field against the domain's xrp-ledger.toml), tokens issued and outstanding, and control flags such as freeze, clawback, blackholed, and multisign. Useful before accepting or holding a token.
Basexrplbruk-agent-api.fly.devfrom $0.0018 endpoints
Anyway Possible Base BalanceCrypto & DeFiLive Base wallet balance for AI agents. Returns native ETH and Circle USDC balances, atomic values, block height, contract address, and observation time for any EVM address. Includes a machine-readable upgrade path to treasury readiness for spend, gas-reserve, and wallet-health decisions. No API key.
Baseanywaypossible.comfrom $0.0015 endpoints- Aalest.ioCrypto & DeFi
On-chain state of ALST, the alest.io token for a tokenized Tesla Cybercab robotaxi (real-world asset). Name, symbol, decimals and total supply read live from Base Sepolia testnet.
Basealest-x402.alest.workers.devfrom $0.012 endpoints - AAirdropPulseCrypto & DeFi
Launch provenance check for LONG.xyz / Doppler tokens on Robinhood Chain — one call verifies a token against the on-chain Doppler Airlock registry: registered launch or not, which stock token backs it (and whether that numeraire is an official Robinhood stock token), launching integrator (LONG primary vs other launchpads vs suffix imitators), factory creator match, 1e18 vanity suffix, governance b
BaseSolanaRobinhood Chain+9airdroppulse.theaslangroupllc.comfrom $0.0511 endpoints - HHermes CommerceAI & agents
Deterministic JSON repair for agent tool outputs, with optional JSON Schema validation. Built for tight agent loops at micropayment prices.
Baseagent.kihustle.techfrom $0.013 endpoints - Wwazir-x402.duckdns.orgData & research
PoolTogether draw scan data
Basewazir-x402.duckdns.orgfrom $0.0013 endpoints - TTradePulseCrypto & DeFi
Live freight rate intelligence for logistics and trade agents. Returns container and air rates by lane with a 90-day benchmark, route status, carrier options, and cost estimates.
BaseSolanaRobinhood Chain+9tradepulse.theaslangroupllc.comfrom $0.0811 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.