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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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4,372 results- Aagent-entity-verify.iykykblog.workers.devAI & agents
Verify a US business entity: status, formation date, registered agent, from official Secretary of State bulk data (plus GLEIF fallback for large companies).
Baseagent-entity-verify.iykykblog.workers.devfrom $0.031 endpoint - Aagent-climate-verify.iykykblog.workers.devAI & agents
Climate normals + hazard statistics for a US location, computed from NOAA GHCN-Daily station observations (CC0): 1991-2020 normals (mean temp/precip/snowfall, heat/freeze/heavy-precip days per year) plus 2016-2025 recent averages and an extreme-heat trend, from the nearest qualifying station with its distance and record completeness disclosed.
Baseagent-climate-verify.iykykblog.workers.devfrom $0.051 endpoint - Xx402checkCrypto & DeFi
Check before paying any x402 tool: is this API a scam/safe? Trust-check one seller URL (live 402 + history). Use for verify-payTo, uptime, price/wallet drift, budget guard, validate 402, debug failing settle. Returns ok|caution|avoid + that tool's history only. $0.01/URL. No free tier. Endpoint+history — not wallet OFAC/simulation. Optional deeper signal: GET /preflight/deep ($0.05).
Basex402check.devfrom $0.011 endpoint - PpkgproofCrypto & DeFi
Call before an agent runs npm install. Checks one npm package against the registry, OSV advisories, install scripts, typosquat and combosquat names and repository provenance, and flags hallucinated or slopsquatted names. Answers safe, caution, block or does_not_exist; every reason is sourced and labelled fact or heuristic.
Basex402.pkgproof.netfrom $0.051 endpoint
Scalogy Real Estate DealsOther servicesProprietary, daily-scored US residential real-estate deals for investors. Each on-market listing is graded (STRONG / MODERATE / FAIR) for flip, BRRRR, or buy-&-hold, with an estimated ARV from a live comp set, gross spread, margin %, cap rate / cash flow, days on market, comp count and the source URL. Filter by state, ZIP, city, price, beds, margin and ARV confidence. Coverage: FL, GA, NC, SC, AL,
Basex402-scalogy-production.up.railway.appfrom $0.021 endpoint
UnderIndexImages, audio & videoVerified reference record for one niche fashion subculture: years, key brands, iconic items, music, where to buy, a price range, and a WARNING note on what it must not be confused with. Call it before recommending brands, items, shops or prices for a named aesthetic, and treat the record as the source of truth. Free list of slugs at /api/catalog.
Baseunderindex-api.onrender.comfrom $0.011 endpoint- QQuick Signal TACrypto & DeFi
Quick Signal TA v3.1.0 — Crypto technical analysis. Ten indicators with natural-language assessments. Query params: token (required), timeframe, bollinger_period, rsi_period.
Basesignal.quickai.buildfrom $0.051 endpoint - Ppolymarket-signal-api.pwnker-polymarket-signals.workers.devAI & agents
PolySignal ranks current Polymarket opportunities by EV, confidence, size hint, risk, and staleness for agent research workflows.
Basepolymarket-signal-api.pwnker-polymarket-signals.workers.devfrom $0.0012 endpoints - GGlobal Legal EntitiesSocial & people
Company name search — find Legal Entity Identifiers (LEIs), legal names, jurisdictions and registration status. Get up to ten matches per page to identify counterparties, distinguish similarly named companies and enrich company reference data.
BasePolygonArbitrum+1legal-entities.use.x402atlas.comfrom $0.011 endpoint - Iintel.hugen.tokyoCrypto & DeFi
Multi-source token due diligence — same aggregation as token-report (security checks, market data, liquidity analysis from 4+ sources) with weighted 0-100 risk scoring and red/green flags. No AI verdict prose — structured score only. For AI-synthesized rationale and recommendations, see /intel/token-report ($0.50). Accepts USDC payments on Base and Solana
BaseSolanaintel.hugen.tokyofrom $0.021 endpoint - CascadeWatchCrypto & DeFi
Liquidation cascade simulation — Morpho Blue chained-liquidation exposure
BaseSolanaEVM chain 5042cascade.lonestaroracle.xyzfrom $0.103 endpoints - Aaurelius-node-02-socal.onrender.comCrypto & DeFi
Aurelius Node 02: Real-time SoCal Pacific Gateway ground-truth oracle for cross-referential supply chain AI agents. Serves a live, actively updated 42-item matrix (13 subfields each) tracking Port of LA/LB vessel queues & gate turn times, Alameda Corridor rail counts, I-710/I-15 truck speeds, Inland Empire Class-A warehouse vacancy, CARB/SCE energy grid loads, & Otay Mesa cross-border wait times.
Baseaurelius-node-02-socal.onrender.comfrom $0.051 endpoint - Wweb-production-77376.up.railway.appAI & agents
Buy the "My Agent Bought Me This" embroidered hat — 0.5 USDC on Base
Baseweb-production-77376.up.railway.appfrom $0.501 endpoint - Wwage-verify.iykykblog.workers.devDeveloper tools
Market salary bands + offer verdict by SOC occupation and metro area. Returns annual wage percentiles (p10/p25/median/p75/p90), mean, employment, and a below_market/competitive/above_market verdict against your offer. BLS OEWS May 2025 public-domain data.
Basewage-verify.iykykblog.workers.devfrom $0.081 endpoint - Xx402 Seller CheckupCrypto & DeFi
Audit your x402 endpoint before buyers hit it. Checks that it answers 402 on the right method, that the payment options can actually be signed (EIP-712 domain of the token matches extra.name and extra.version), that the resource URL is the https URL buyers call, and that /openapi.json and /.well-known/x402 match. Includes the CDP validate verdict, whether the CDP Bazaar lists the endpoint, its pay
Baseseller-checkup.kagurazaka.devfrom $0.021 endpoint
FranticAI & agentsHire the Town. Outsource a task to AI agents on the Frantic bounty board. Describe the work, the deliverable, and the acceptance criteria, then fund the bounty with Base USDC in the same call. Agents claim it, submit their artifacts in the open, and are paid only when delivery is accepted. Every claim, judgment, and payout is sealed to a receipt ledger anyone can verify. New postings are screened
Basegofrantic.comfrom $2.001 endpoint- IInterzoid Data EnrichmentSocial & people
Interzoid Batch Data Enrichment API: enrich up to 100 JSON records per call with AI company intelligence (profiles, parent companies, executives, competitors, buying signals, funding, ESG, gov contracts, tech stacks, NAICS/SIC codes), email, phone, and IP scoring, sales tax, VAT, and customs rates, property data, standardization, translation, or custom fields. 39 functions, 16 languages, processed
Baseenrich-api.interzoid.comfrom $0.501 endpoint - Aagent-robotics-compliance.iykykblog.workers.devAI & agents
Check a robot maker's compliance history: OSHA robot-involved incident data plus FDA device recall (enforcement) history for the maker. Returns incident counts, recent incidents, recall events, and a verdict. Public-domain OSHA/FDA data.
Baseagent-robotics-compliance.iykykblog.workers.devfrom $0.101 endpoint - Zzlurp.aiSearch & web
Scrape any public URL to clean markdown
Basezlurp.aifrom $0.0051 endpoint - x402-gatewayCrypto & DeFi
x402-gateway tool: wallet_token_risk (market: agoragentic)
Basex402.freeq.onefrom $0.001150 endpoints - Xx402-next-mainnet-wheat.vercel.appOther services
Access to protected content
Basex402-next-mainnet-wheat.vercel.appfrom $0.0012 endpoints - Xx402-dataviz-poc.theliminalguy.workers.devImages, audio & video
Render a bar/line/area chart to SVG (v2 discovery probe)
Basex402-dataviz-poc.theliminalguy.workers.devfrom $0.011 endpoint - WWorkBrain Decision IntelligenceSearch & web
Inspect the latest reviewed cyber event with public sources, affected entities, confidence, freshness, decision significance, and evidence-bearing relationships in structured JSON
Baseworkbrain.allthedills.comfrom $0.011 endpoint - Wwebhook-api-production-4378.up.railway.appDeveloper tools
Register a webhook endpoint
Basewebhook-api-production-4378.up.railway.appfrom $0.012 endpoints - Wwatchevelive.comOther services
Eve’s RWA print: which official number is the actual (T-bill, gold, NAV). Call for official prints, not casino coins.
BasePolygonArbitrum+10watchevelive.comfrom $0.051 endpoint - Wwalcert.globalscoreagent.comCrypto & DeFi
Before hiring or paying an ERC-8004 agent, grade the controlling wallet's funding origins (CEX, bridge, mixer, organic) A-F. POST wallet_address; signed certificate + Celo on-chain anchor. $0.05 USDC.
BaseEVM chain 42220BNB Chainwalcert.globalscoreagent.comfrom $0.052 endpoints - Vverza.devOther services
South African SA ID number validation: Structural validation of a South African identity number with safe decode: Luhn check digit, birth date, gender and citizenship segments (citizen or permanent resident). The structural step in KYC, KYB and customer onboarding or due diligence workflows: derive date of birth, age, gender and citizenship without storing the identity. Run it before a paid regist
Baseverza.devfrom $0.012 endpoints - JJSON Schema ValidatorData & research
Validate JSON data against a JSON Schema (draft-07, Ajv). Returns valid + detailed errors with instance paths.
Basevalidate.yankii.frfrom $0.011 endpoint - PParse a User-AgentSearch & web
Break a User-Agent string into browser, engine, operating system (each with a version) and device type. Unidentifiable components are reported as null.
Baseuseragent.openverbs.comfrom $0.0023 endpoints - WWebsite technology stack lookupSocial & people
Detect the technology stack a website runs on. Given a domain, returns the software and services it uses (CDN, analytics, frameworks, CMS, payment, hosting, security) grouped by category, plus a domain rank, last-seen date, country and public social links. Unknown domain returns found=false.
Baseurltrust.openverbs.comfrom $0.0043 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.