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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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4,150 results- TToolshedDeveloper tools
YAML to JSON. POST a YAML document; the response is pretty-printed JSON. Anchors and aliases are resolved, and a multi-document stream converts as its FIRST document rather than as an array — the direction that bites, because YAML is the larger language.
BaseSolanatoolshed.lemon-agent.devfrom $0.0025 endpoints - Sscdo.com.auAI & agents
SCDO x402: live SCDO Agent Ledger stats for AI agents
Basexrplscdo.com.aufrom $0.014 endpoints - Nnumberintel.devData & research
NANP area code lookup: region, state, country, timezones, current local time, toll-free/premium/geographic flags. Static authoritative dataset (450 NPAs), sub-10ms responses.
Basenumberintel.devfrom $0.026 endpoints - VVIN Decoder (NHTSA vPIC)Search & web
Decode a VIN into make, model, model year and vehicle attributes using NHTSA vPIC. Use when an agent has a VIN and needs structured vehicle information. Call GET ?vin= or POST JSON {"vin"}; full or partial VINs, decode errors preserved. No owner lookup.
Basefoundry-par007-machine-revenue-mainnet.inference-chip-index.workers.devfrom $0.0034 endpoints - JJapan Postal LookupOther services
Japanese postal-code lookup and reverse lookup. Keywords: Japanese postal lookup, Japan Post postal code, postal code reverse lookup, 日本郵便番号検索. Use a postal code or prefecture/city/ward/town components against the local Japan Post snapshot. / 通过邮编或都道府县、市区町村、区、町名字段,在本地 Japan Post 数据中进行日本邮编反查。
Baseapi.jpverify.comfrom $0.0016 endpoints - Aagentkit-x402-buy.netlify.appOther services
ETH/USD spot via AgentKit x402 — $0.001 USDC
Baseagentkit-x402-buy.netlify.appfrom $0.0011 endpoint - Ssupplier-risk-api-production.up.railway.appDeveloper tools
Website abandonment check for a company domain. Fetches the homepage now and says why it is or isn't serving: hosting billing lapsed (Vercel, Squarespace, Wix), site removed from its platform, CDN origin unreachable, parked or for sale, 410 gone, bot challenge, or serving. For domains Tiag Scovik watches nightly, adds the date the current state began and up to 30 nights of history. Use before payi
Basesupplier-risk-api-production.up.railway.appfrom $0.012 endpoints
NeoavisAI & agentsFind French online stores tracked by Neoavis by name or domain, with their score out of 100 for AI shopping agents and a link to the full finding.
Baseneoavis.comfrom $0.0055 endpoints- MMacroPulseMarkets & finance
Planting window optimizer for grower and farmer agents. Returns optimal planting dates from live air temperature, observed soil wetness, frost dates, crop calendar, and growing-degree-day requirements.
BaseSolanaPolygon+8fieldpulse.theaslangroupllc.comfrom $0.059 endpoints - Ffetchharbor.benlab.downloadAI & agents
Convert a supplied HTML string into deterministic, LLM-ready Markdown. Preserves headings, links, lists, emphasis, and code without fetching a URL or invoking an AI model. Input is bounded to 2,000,000 characters.
Basefetchharbor.benlab.downloadfrom $0.0053 endpoints - EEarthquake IntelligenceSearch & web
Recent earthquakes — search newest-first USGS seismic events by rolling time window and minimum magnitude, with revision, freshness, and provenance.
BasePolygonArbitrum+1earthquakes.use.x402atlas.comfrom $0.0052 endpoints - Aapi.verrow.aiAI & agents
Watch a parcel for 30 days: new permits or decisions touching it, delivered to an HTTPS webhook with HMAC signatures and retries. $4.00 per 30 days in USDC. Verified: 100% golden accuracy (78/78), 100% page-cited, UNKNOWN never charged, 100% uptime (24h), data as of 2026-10-26.
BaseBase Sepoliaapi.verrow.aifrom $0.058 endpoints - AAutomaton Media APIsImages, audio & video
Text to speech (TTS) API: natural English speech with 28 voices (American and British, female and male; Kokoro-82M, open-licensed). Returns MP3 or WAV. Default voice af_heart; list voices at GET /v1/voices. Runs at about real time: 1,000 characters take about a minute. Priced per character.
Baseapi.language123.netfrom $0.0013 endpoints - Aaddress.agentic-jp.comOther services
Japanese address normalization (住所正規化): standardize a JP address into clean prefecture / city / town / chome-banchi components. Fixes fullwidth/halfwidth digits, old-form kanji, and chome-banchi notation variants, and resolves the 7-digit postal code. Returns a 0-1 confidence score so agents can flag low-quality input. Use for address validation, cleansing, deduplication, and canonicalization befo
BasePolygonSolanaaddress.agentic-jp.comfrom $0.0015 endpoints
Useful Work toolsSearch & webCheck up to 15 links on a public web page and report which are broken
Basetools.usefulwork.appfrom $0.0023 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- LLiquid StateOther services
Decision Leg invalidations. Per-call USDC.
Baseliquidstate.techfrom $0.012 endpoints - Ffaultcode-diagnostic-mcp.bowling-anthony.workers.devCrypto & DeFi
What a vehicle fault code means, with source-attributed generic and make-specific definitions and any disagreement between sources stated.
Basefaultcode-diagnostic-mcp.bowling-anthony.workers.devfrom $0.0061 endpoint - WWeb EvidenceOther services
Retrieve deterministic evidence from a public HTTPS page
Baseevidence.api.williamrobinson.devfrom $0.011 endpoint
vrsaiOther servicesCheck an exact npm or PyPI package version immediately before installation using current registry, vulnerability, malicious-package, withdrawal/deprecation, and verified provenance evidence. Returns ALLOW, REVIEW, BLOCK, or UNKNOWN with machine-readable reasons.
BaseSolanaapi.vrsai.techfrom $0.011 endpoint- Aapi.boonprotocol.comOther services
Boon x402 endpoint recognition graph
Baseapi.boonprotocol.comfrom $0.012 endpoints - Aalpha402xMarkets & finance
Verbatim, line-cited extraction of the material quantitative sentences from any U.S. company's SEC 10-Q (debt, buybacks, acquisitions, litigation). Extractive, not generative. Any ticker.
Basealpha402x.comfrom $0.056 endpoints - Wwren-guard ProCrypto & DeFi
5 real scenarios from the wren-guard Pro agent-wallet attack corpus (prompt injection, encoded instructions, permit phishing, homoglyph addresses) with expected safe outcomes. Use when you want to red-team your agent's wallet guard or try the 89-scenario corpus before buying. Built and run by Wren, an AI agent (@WrenOnBase).
Basewren-guard-pro.wrenonbase.workers.devfrom $0.011 endpoint - WWintelOther services
Live scored geopolitical threat feed: name, category, severity, coordinates, and source URL for every active tracked threat.
Basewintel.canopy.financefrom $0.011 endpoint - SStableTubeImages, audio & video
Create a paid StableTube download job. StableTube downloads the video server-side, uploads the mp4 to S3, and returns a temporary StableTube-owned download URL when ready.
Basestabletube.devfrom $0.101 endpoint
address_activityCrypto & DeFiRecent transaction history for an address, normalized across Ethereum, Base, Arbitrum, Optimism, Polygon, Bitcoin, and Solana -- direction, counterparty, and value where the chain's data model makes that derivable.
BaseSolanachainsscope.duckdns.orgfrom $0.012 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 - Iinsider-radar-agentMarkets & finance
Parsed House/Senate PTR trades: member, ticker, type, amounts, filing lag (last 1000)
SolanaBasewhodeployed.wtffrom $0.011 endpoint - LLocus x402 ServicesOther services
Locus public pay-per-use API
Basesuno.x402.paywithlocus.comfrom $0.0052 endpoints - Rresearch.genexxis.comSearch & web
Search scholarly papers across OpenAlex, arXiv and Crossref (merged, de-duplicated): title, authors, year, venue, DOI, arXiv id, citation count, open-access PDF link, abstract, topics.
Baseresearch.genexxis.comfrom $0.013 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.