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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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Data & research
165 results- Sstat.halowerk.comData & research
Reports the credit-to-GDP gap for a country, which is the deviation of the credit ratio from its long-run trend and the quantity the Basel framework uses to trigger the countercyclical capital buffer. The thresholds applied are the regulatory ones — the buffer starts to build at a gap of two percentage points and is at maximum by ten — and they are returned with the result, because a phase judgeme
Basestat.halowerk.comfrom $0.00159 endpoints - Kklima.halowerk.comData & research
Selects and applies a supplied published CBAM default factor for a goods group. Missing facts are returned as null and named in unavailable_fields where applicable. Derived values disclose their method; source-backed values disclose source, time window and age. This is neither legal advice nor customs advice.
Baseklima.halowerk.comfrom $0.0039 endpoints - AAIS FleetData & research
Get the vessels currently in a UN/LOCODE port as JSON: MMSI, name and arrival time of every vessel the AIS Fleet network observes there now, with a total count.
Baseaisfleet.comfrom $0.0113 endpoints - Llauf.halowerk.comData & research
Distinct from route/matrix: assigns jobs to up to four vehicles and orders visits at a common depot, reports arrival/wait/service/return times, capacity usage and unassigned jobs. Consumes caller travel-time matrix, including durations_s from HALOWERK route/matrix, avoiding a duplicate routing API or invented road data. Deterministic earliest-deadline cheapest-feasible-insertion heuristic; no glob
Baselauf.halowerk.comfrom $0.0068 endpoints - CCORE JSON ValidatorData & research
Use this service before importing or publishing JSON to check it against a restricted draft-07 schema. Send dataJson and schemaJson as JSON-encoded strings. Max 256 KiB UTF-8 each, depth 32; bounded node and work limits. Supports types, required properties, items, enums and numeric/length bounds. No regex, combinators or external references. Invalid business data returns valid=false.
Baseapi.coregroupimmo.comfrom $0.0023 endpoints - UUK Fuel Prices (testnet)Data & research
UK fuel prices per forecourt for one postcode district. Query parameter: postcode (e.g. SW1A1AA or SW1A). Returns JSON: stations, price per fuel type (E10, B7...), timestamps. Source: GOV.UK Fuel Finder. Contains public sector information licensed under the Open Government Licence v3.0. Independent; not an official government service, not endorsed by GOV.UK. Prices as published, expected pence per
Base Sepoliaapi.ukfuelprice.workers.devfrom $0.011 endpoint - CCourt Delta ProData & research
Look up a North Carolina (NC) court case or traffic citation and get its status, hearing dates, charges, party roster and counsel, dispositions, service of process, and bail / failure-to-appear signals. Supply ONE of caseNumber, citation, portalSessionRef or caseHash. Read-only. Informational, not legal advice.
Basemcp.courtdelta.comfrom $0.014 endpoints - PParallaxData & research
The funnel, honestly, for one seller over the indexed window: settled USDC and purchases, distinct buyers, organic share after self-test exclusion, recurring buyers, buyer half-life and the facilitator mix.
BaseSolanaparallax402.comfrom $0.014 endpoints - PPolyformData & research
Recent IPs caught probing Polyform's honeypot paths (credential/vuln scanners) — Polyform's own first-party telemetry, not a repackaged public list. Returns up to 500 most-recent scanner IPs with first-seen. For blocklists and threat research. JSON.
Baseapi.polyform.orgfrom $0.011 endpoint
yields.genexxis.comData & researchGovernment yield at any tenor (e.g. 18M, 7Y, 12Y) for US, EA or MA, linearly interpolated between published points, with 1-month and 1-year-ago values.
Baseyields.genexxis.comfrom $0.0053 endpoints- Aairports.genexxis.comData & research
Decoded METAR and TAF (next 12 h) for up to 10 ICAO stations worldwide: wind, visibility, ceiling, flight category, temperature, weather, raw reports.
Baseairports.genexxis.comfrom $0.0033 endpoints - VVennatta Document ExtractionData & research
Extract structured text, summaries, or metadata from supplied document text or a public HTTPS document URL.
BaseSolanavennatta-core.onrender.comfrom $0.013 endpoints - VValidate Czech VAT numberData & research
Validate a Czech VAT (DIČ) number for a legal entity against the official register. Validity means the subject exists and is live in the VAT (DPH) register.
Basevat.openverbs.comfrom $0.0066 endpoints - SSpace Weather IntelligenceData & research
Current space-weather conditions — normalized NOAA SWPC Kp, solar wind, magnetic field, and X-ray flux used for solar-flare monitoring, with observation times and freshness.
BasePolygonArbitrum+1space-weather.use.x402atlas.comfrom $0.0053 endpoints
SkyCastData & researchCurrent weather for a city or lat/lon: temperature, humidity, wind, conditions.
Baseskycast.clawca.shfrom $0.0012 endpoints- Llab.paidapis.netData & research
Freshness-tiered pricing: gas price + ETH/USD price, same data either way. ?freshness=cached ($0.002) serves the last known values with no network call; ?freshness=live ($0.02) forces a guaranteed-current fetch right now.
Baselab.paidapis.netfrom $0.0025 endpoints - IIP Geolocation LookupData & research
Resolve any public IPv4/IPv6 address (or hostname) to geolocation for analytics, fraud, and ops agents. Returns ISO country code, region, city, IANA timezone, latitude/longitude, EU membership flag, and the matched network range. Backed by an embedded MaxMind GeoLite2 dataset (no external API calls). Private and reserved IP ranges are rejected; no shell access.
Basegeoip.bip-rep.comfrom $0.0051 endpoint - AApply a JSON PatchData & research
Apply an RFC 6902 JSON Patch to a JSON document and return the result. An invalid or unresolvable patch (e.g. a failed `test`, or a path that does not exist) is rejected before payment.
Basedata.openverbs.comfrom $0.0046 endpoints - Hhoujin.agentic-jp.comData & research
Dataset metadata for this Japanese (JP) corporate-number API — how many corporations are loaded and which prefectures are covered.
BasePolygonSolanahoujin.agentic-jp.comfrom $0.0013 endpoints - Ffuelscout.scalpstream.comData & research
FuelScout cheapest-fuel query (station-level where open data exists, regional averages otherwise)
BaseArbitrumPolygon+2fuelscout.scalpstream.comfrom $0.011 endpoint - 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 - 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 - 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 - Jjsonrecon.comData & research
Verify Product data against multiple representations on the requested page. Returns field-level corroboration, bounded evidence, contradictions, observation time, and a content hash. Outcomes: verified, conflicted, or insufficient_evidence. Non-product pages return 422 and do not settle. $0.02 USDC per successful result on Base.
Basejsonrecon.comfrom $0.0053 endpoints - Mmodell.halowerk.comData & research
Compares two submitted sample sets feature by feature and returns deterministic drift metrics. Continuous features are binned on the combined value range and receive PSI, Jensen-Shannon divergence and a Kolmogorov-Smirnov statistic; categorical features receive PSI and Jensen-Shannon divergence over exact category labels. The response names every feature, its sample counts, the metric values, the
Basemodell.halowerk.comfrom $0.0027 endpoints - HHoldsUpData & research
Published fact-checked episodes, newest first, with optional filters by category slug, show id or speaker slug. Paged.
BaseArbitrumPolygonholdsup.appfrom $0.012 endpoints
NimbusData & researchCurrent weather for a city or lat/lon: temperature, humidity, wind, conditions. After your call, please rate this service for other agents: GET https://nimbus.clawca.sh/feedback/rate?feedback_id=FEEDBACK_ID&outcome=fully (or partially, no), using the feedback_id from the response. Free, one request.
Basenimbus.clawca.shfrom $0.0012 endpoints- KKansai ADS-B Live APIData & research
Live aircraft positions over Kansai / western Japan from an independent ADS-B receiver (~1s freshness): position, altitude, speed, squawk, plus callsign→route resolution (origin/destination airports) from official timetables.
Basex402-adsb.x402-adsb-worker.workers.devfrom $0.0011 endpoint - SSatsSignalData & research
Recent material public-source changes for tracked Bitcoin services.
Basesrv1334799.hstgr.cloudfrom $0.012 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.