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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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393 results- UURL & Text ToolsDeveloper tools
Percent-encode or decode text as URL component, path, query or form data (UTF-8), with byte counts.
BaseSolanaPolygon+1url-text-tools.x402tookit.comfrom $0.028 endpoints - GGEDX402 SearchSearch & web
Tavily web search — POST { query, max_results?: 5 } on search.gedx402.com; ranked results via Tavily API. $0.042 USDC per request. AM-winning shape at /v1/search. Agent search: tavily, web search, serp, search lite, semantic search.
BasePolygonArbitrum+2search.gedx402.comfrom $0.016 endpoints - UUS Regulations PipelineSearch & web
US federal regulations in the pipeline — documents on public inspection at the Federal Register, filed by agencies and scheduled to publish, with type, agencies, filing time and the scheduled date. Use to see tomorrow's rules, notices and executive orders before they are published.
BasePolygonArbitrum+1us-regulations.use.x402atlas.comfrom $0.0055 endpoints - CCyberPulseCrypto & DeFi
CVE fact check, deterministic. Answers "is CVE-XXXX-NNNN real", "is it exploited in the wild", "what version fixes it", "how severe is it". Joins the NVD record (CVSS score, vector, dates), the CISA KEV catalog (actively-exploited flag, remediation due date, ransomware use), and OSV (affected packages + fixed versions per ecosystem). No LLM. Distinguishes "not a known CVE" from "registry unreachab
BaseSolanaPolygon+8cyberpulse.theaslangroupllc.comfrom $0.0211 endpoints - TText Analysis ToolsDeveloper tools
Convert text to camelCase, PascalCase, snake_case, kebab-case, CONSTANT_CASE, Title Case, sentence case and a URL slug.
BaseSolanaPolygon+1text-metrics.x402tookit.comfrom $0.027 endpoints - PPet Care CalcOther services
Aquarium volume in US gallons and litres from inside dimensions, usable water after substrate, and the water's weight.
BaseSolanaPolygon+1pet-calc.x402tookit.comfrom $0.027 endpoints - SStatistical TestsData & research
Adjust p-values for multiple testing (Bonferroni, Sidak, Holm, Benjamini-Hochberg) and see which tests survive.
BaseSolanaPolygon+1stats-tests.x402tookit.comfrom $0.027 endpoints
Prepaid credit $0.1 (+10%)Images, audio & videoTop up $0.1 USDC and get $0.11 of agentsvc.io credit (10% bonus), valid 180 days. Returns a bearer token: send "Authorization: Bearer <token>" with any /api/v1/proxy/{slug} call or MCP request instead of an x402 payment. Calls are then paid from the balance without an on-chain step (a few milliseconds). Failed calls are refunded. To add to an existing token, send it in the Authorization header wit
BasePolygonArbitrum+1agentsvc.iofrom $0.002128 endpoints- WWaterPulseAI & agents
Live USGS river-gauge tick, deterministic. Answers "what is the flow at this gauge right now", "is this river high or low vs this week". Returns the latest streamflow (discharge, cfs) and gage height (ft) for one USGS site plus the 7-day min/max range, reading count, site name and coordinates, straight from USGS instantaneous values. Unknown sites 404 before payment. No LLM, no key, public domain.
BaseSolanaPolygon+8waterpulse.theaslangroupllc.comfrom $0.0111 endpoints - PPolicyPulseSearch & web
Federal Register search, deterministic. Answers "new SEC rules on stablecoins", "is there an open comment period on AI", "when does this rule take effect". Full-text search over every US federal rule, proposed rule and notice, with effective dates, comment deadlines and docket ids — or mode=open-comments for comment periods closing soonest. Typed documents straight off the official API. No LLM, no
BaseSolanaPolygon+8policypulse.theaslangroupllc.comfrom $0.0212 endpoints - MMarine ConditionsOther services
Latest NDBC buoy observation: wind, gust, waves, swell, pressure and water temperature, with a Beaufort and sea-state screen.
BaseSolanaPolygon+1marine-conditions.x402tookit.comfrom $0.027 endpoints - HHVAC Airflow & Load CalcOther services
Air changes per hour (ACH) from airflow and room volume, or the CFM needed for a target ACH.
BaseSolanaPolygon+1hvac-calc.x402tookit.comfrom $0.027 endpoints - GGrantPulseMarkets & finance
Federal grant search for grant-writer and nonprofit agents. Returns live Grants.gov results with agency insights and past-award context.
BaseSolanaPolygon+8grantpulse.theaslangroupllc.comfrom $0.1013 endpoints - CCareerPulseMarkets & finance
Wage-recovery check — unpaid overtime (FLSA 1.5x + CA/AK/NV daily rules + Ontario 44h), minimum-wage shortfall vs effective-dated 2025/2026 state tables, final-paycheck deadlines & penalties (CA waiting-time, MA treble, NY 100%, IL 5%/mo, WA double), UK unlawful deductions (3-month tribunal window + ACAS route + NMW bands). Computed amounts with statutory-damages exposure, citations, deadline math
BaseSolanaPolygon+8careerpulse.theaslangroupllc.comfrom $0.0513 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 - TTalentPulseMarkets & finance
Layoffs and workforce-reduction tracker by industry and region — which companies are cutting jobs, what talent is newly available, who is counter-hiring, plus US WARN Act signals and BLS unemployment context. Real-time hiring-market intelligence for recruiting, sourcing and talent agents. Any industry, global, 10 languages.
BaseSolanaPolygon+8talentpulse.theaslangroupllc.comfrom $0.109 endpoints - Aapi.genesistokenlabs.comSearch & web
Use when an agent needs any web page as clean LLM-ready markdown (no ads, nav, or scripts) for RAG, research, or summarizing. Example input: GET /x402/v1/web-extract?url=https://example.com/article. Example output: {"url":"https://example.com/article","title":"…","markdown":"# Title\n\nBody text…","wordCount":812}
BaseEthereumArbitrum+3api.genesistokenlabs.comfrom $0.0015 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 - 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 - 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
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- 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 - 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 - 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 - GGlobal HazardsOther services
Recent earthquakes worldwide above a magnitude, newest or largest first, optional bounding box, with a match count.
BaseSolanaPolygon+1global-hazards.x402tookit.comfrom $0.026 endpoints
PayPerScreenCrypto & DeFiIP risk check (beta) for logins and checkouts: is a public IPv4 address on the Spamhaus ZEN blocklist (spam, botnets, hijacked networks) or a Tor exit node? Includes the network owner. Returns a low, medium or high risk level.
BasePolygonArbitrumapi.payperscreen.comfrom $0.015 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.