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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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Social & people
44 results- Search arXiv papers | VextoriumSocial & people
Search scientific papers on arXiv (AI, physics, maths, economics...): title, authors, abstract, categories, dates and PDF link; by relevance or newest, with category filter (cs.AI, cs.CR, q-fin...).
BaseSolanaPolygon+3api.vextorium.comfrom $0.001230 endpoints - UUSDC yieldSocial & people
USDC yield, best lending rates now ($0.002): supply and borrow APY of USDC on every Aave v3, Spark and Compound v3 market (Ethereum, Base, Arbitrum, Optimism, Polygon), utilization and size, highest APY first, read on chain every 10 minutes. Use to park idle USDC.
BasePolygonArbitrum+3api.marketintelligenceapi.comfrom $0.001104 endpoints - UUS Economic Data (FRED)Social & people
Any FRED economic time series by id or alias: CPI, core PCE, unemployment, payrolls, GDP, fed funds, SOFR, Treasury yields, mortgage rates, M2, oil, VIX, jobless claims... Latest value, change, 1-year % change and history. Use for macro analysis and economic questions.
BasePolygonArbitrumbess-x402.onrender.comfrom $0.002184 endpoints - Ttwin.unykorn.orgSocial & people
Gas price on Base and Ethereum in ONE call (legacy gas price + EIP-1559 priority fee, wei and gwei) — Genesis402 / UnyKorn Operator Network
BasePolygonSolana+1twin.unykorn.orgfrom $0.001276 endpoints
Saylor Innovations Token PricesSocial & peopleSolana token price by mint - USD price, changes, liquidity, volume and FDV
SolanaBasePolygon+1saylorinnovations.comfrom $0.0011,912 endpoints- Aagentworld.meSocial & people
AgentWorld Agent Leaderboard - top AI agents ranked by USDC wealth or reputation score. Includes job role, city, mood, personality archetype. Updated every 3 minutes by the tick engine. Filter by city or job.
BaseEthereumArbitrum+3agentworld.mefrom $0.0012 endpoints - DDNS A Record LookupSocial & people
DNS A record lookup — resolve any hostname or domain to its IPv4 addresses, returned as a clean JSON list. For host resolution, connectivity and uptime checks, IP-reputation enrichment and infrastructure mapping.
BasePolygonArbitrum+1dns.use.x402atlas.comfrom $0.0057 endpoints
InsumerAPISocial & peopleSigned attestation (ECDSA plus a post-quantum ML-DSA-65 companion) of on-chain wallet conditions across 37 chains: token balance, NFT ownership, EAS, Farcaster, view calls, ratio rules, account code (plain key, EIP-7702 delegation, or contract), and agent standing (ERC-8004 registration, ERC-7710 delegation validity). A verifiable boolean, never raw balances or code. Up to 10 conditions per pay-pe
BasePolygonArbitrum+2api.insumermodel.comfrom $0.053 endpoints- 4402oracleSocial & people
Crypto price check: the current spot price of Bitcoin (BTC), Ethereum (ETH), Solana (SOL) or any token ticker in USD, cross-checked across five exchanges (Coinbase, Kraken, OKX, Binance, CoinGecko). Returns the median price, the spread between venues and a divergence flag, as a signed price oracle attestation your agent can cite. Use it before your agent trades, quotes, values a portfolio or settl
BasePolygonArbitrum402oracle.comfrom $0.025 endpoints - PPatentPulseSocial & people
Trademark search / brand-name clearance / trademark availability check for any mark. Returns existing similar marks, USPTO/TESS status, likelihood-of-confusion analysis, filing strategy, domain-availability context, and opposition/enforcement risk for given goods/services. For IP and brand agents. Worldwide.
BaseSolanaPolygon+8patentpulse.theaslangroupllc.comfrom $0.058 endpoints - Llookup_carrierSocial & people
Use this when you already have a carrier's USDOT number and need its current profile: safety rating, authority status, insurance flags, fleet size. Returns Active, Inactive, and Pending carriers alike. Billed only when the number resolves to a real carrier; an unknown number is free.
SolanaBasePolygonfmcsa-mcp-843680657471.us-central1.run.appfrom $0.0122 endpoints - AagosintSocial & people
Business registry lookup: company identity and legal entity enrichment as structured JSON, by registration number, name and country, VAT number, LEI or website. Registers of Czechia, Norway, the United Kingdom, France, Finland, US SEC filers and every LEI holder. Use when: you need the official identity of one company.
BasePolygonSolanaagosint.shveik.devfrom $0.017 endpoints - CCompany EnrichmentSocial & people
One-call company snapshot from SEC data: profile, filing freshness, red-flag filings, insider filing count and LEI.
BaseSolanaPolygon+1company-enrichment.x402tookit.comfrom $0.0211 endpoints - WWealthPulseSocial & people
FDIC bank-health check, deterministic. Answers "is my bank safe", "is this bank well capitalized", "did this bank fail". Resolves a US bank by name or FDIC cert, then computes from quarterly Call Reports: PCA capital category (12 CFR 324.403), ROA/ROE/NIM, noncurrent-loan and reserve-coverage ratios, YoY deposit growth, uninsured-deposit share, 8-quarter trend. Includes closed/failed institutions
BaseSolanaRobinhood Chain+9wealthpulse.theaslangroupllc.comfrom $0.0217 endpoints - Mmanifest-auditSocial & people
Check Python packages from PyPI before you pip install or bump versions. Send {"packages":["requests==2.25.0","flask>=2.0"]} or {"requirements":"<requirements.txt text>"}, up to 50 packages. Per package: latest release and date, whether a pinned version is behind, license, yanked status, requires_python, and known vulnerabilities from OSV with severity and first fixed version. Deterministic, no LL
BasePolygonSolanaaudit.152-53-82-29.sslip.iofrom $0.0056 endpoints - RRacingPulseSocial & people
Statistically-backed racing angles — trainer/jockey combos and trends. For horse-racing betting agents.
BaseSolanaPolygon+8racingpulse.theaslangroupllc.comfrom $0.0213 endpoints - LLegalPulseSocial & people
Trademark knock-out check with live official verification: name in, conflict risk verdict out. Candidate conflicting marks are looked up in the USPTO TSDR system in real time and returned as verbatim official records (LIVE/DEAD status, owner, classes, dates) — research leads that could not be officially verified are labeled as such. US federal register; names the right register for non-US markets.
BaseSolanaPolygon+8legalpulse.theaslangroupllc.comfrom $0.0814 endpoints - CCountry FactsSocial & people
Fewest land border crossings between two countries, with the countries passed through, or NO_LAND_ROUTE.
BaseSolanaPolygon+1country-facts.x402tookit.comfrom $0.028 endpoints - AAlphaPulseSocial & people
DeFi copy-trading vault discovery on Hyperliquid, GMX, dYdX and Gains Network — TVL, APR, risk profile and smart-contract assessment. For on-chain investing agents.
BaseSolanaRobinhood Chain+9alphapulse.theaslangroupllc.comfrom $0.0814 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 - 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 - SScentPulseSocial & people
Fragrance note-profile lookup — note pyramid (top/middle/base), accord breakdown, molecule-level odor descriptors, who it suits, and occasion/climate fit for any perfume or cologne, grounded in fragrance community consensus and The Good Scents Company ingredient data.
BaseSolanaPolygon+8scentpulse.theaslangroupllc.comfrom $0.0811 endpoints - TTablePulseSocial & people
Board-game recommendations by group profile — player count, complexity tolerance, theme, playtime, budget, and ages, grounded in current web reviews/discussion (never BoardGameGeek data). Returns a ranked shortlist with fit reasoning, honorable mentions, and honest avoid-list.
BaseSolanaPolygon+8tablepulse.theaslangroupllc.comfrom $0.0811 endpoints - PProspectPulseSocial & people
Which free Sentinel-1/2, ASTER, and Landsat scenes cover a target area, plus a geological remote-sensing guide, for exploration and geology agents. Returns scene availability and which sensor maps which alteration mineral.
BaseSolanaPolygon+8prospectpulse.theaslangroupllc.comfrom $0.1011 endpoints - LLongevityPulseSocial & people
Biomarker / blood test interpretation (lab result analysis) for longevity and health agents. Reads any lab value (ApoB, hs-CRP, HbA1c, IGF-1, Lp(a), testosterone, ferritin) through the lens of longevity science: what it means for biological aging and disease risk, and how to improve it. 50+ key longevity biomarkers, worldwide. Health intelligence, not medical advice.
BaseSolanaPolygon+8longevitypulse.theaslangroupllc.comfrom $0.1011 endpoints - HHerbaPulseSocial & people
Natural remedy lookup for herbalist and wellness agents. Returns evidence-rated traditional remedies and herbs for any condition.
BaseSolanaPolygon+8herbapulse.theaslangroupllc.comfrom $0.089 endpoints - GGeopoliticalPulseSocial & people
Geopolitical supply-chain risk for supply-chain, sourcing, and risk agents. Maps concentration, chokepoints, sanctions exposure, and reshoring options for any sector or commodity, from chips to critical minerals.
BaseSolanaPolygon+8geopoliticalpulse.theaslangroupllc.comfrom $0.1510 endpoints - EEconSignalPulseSocial & people
Multi-source inflation intelligence for any country — official CPI, IMF forecasts, food/energy dynamics and alternative signals, including where CPI is manipulated. For macro and EM agents.
BaseSolanaRobinhood Chain+9econsignalpulse.theaslangroupllc.comfrom $0.0810 endpoints - IInsurePulseSocial & people
Renters insurance premium estimate and coverage calculator — right coverage amounts, carrier comparison, umbrella guidance, and a country-aware estimated monthly premium from public benchmarks. For insurance and personal-finance agents, any country.
BaseSolanaPolygon+8insurepulse.theaslangroupllc.comfrom $0.088 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.