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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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186 results- DDictionary and EtymologyImages, audio & video
Compare two English words side by side: parts of speech, sense counts, lead definitions and what they share.
BaseSolanaPolygon+1dictionary-wiktionary.x402tookit.comfrom $0.027 endpoints - DDeveloper UtilitiesAI & agents
Certificates in Certificate Transparency logs for a domain: recent certs, issuers, subdomains seen (Cert Spotter).
BaseSolanaPolygon+1dev-utils.x402tookit.comfrom $0.027 endpoints - TTwitter/X Tweet Media DownloaderImages, audio & video
Twitter (X) video & image downloader — pass a public tweet / X post URL, get direct CDN media links: .mp4 video URLs with thumbnails plus every image in the post, ready to stream, embed, re-host, or download. No scraping or browser automation.
BasePolygonArbitrum+1xmedia.use.x402atlas.comfrom $0.0051 endpoint - FFX Rates ECBMarkets & finance
Rates for up to 10 currencies against one base at once, with each one's 30-day change, strongest and weakest first.
BaseSolanaPolygon+1fx-ecb.x402tookit.comfrom $0.023 endpoints - UUK Open DataData & research
Official UK bank holidays for England and Wales, Scotland or Northern Ireland in a given year, with weekdays, from GOV.UK.
BaseSolanaPolygon+1uk-open-data.x402tookit.comfrom $0.026 endpoints
RecallScoutAI & agentsProduct recalls (US): is a product, brand, food, drug, medical device or vehicle (make, model, year) under an active FDA, NHTSA or CPSC recall? Severity on one scale, hazard, remedy and lot codes. RecallScout
BaseArbitrumPolygon+2recallscout.scalpstream.comfrom $0.011 endpoint- SSatellite CatalogData & research
Screen a CelesTrak group for low-perigee objects (default under 250 km). A heuristic flag, not a re-entry prediction.
BaseSolanaPolygon+1satellite-catalog.x402tookit.comfrom $0.023 endpoints - SStructural and Beam CalculatorsOther services
Axial stress, strain and elongation from load, area, E and length; thermal strain/stress; factor of safety vs yield.
BaseSolanaPolygon+1structural-calc.x402tookit.comfrom $0.024 endpoints - SSite AuditSearch & web
Can Googlebot, Bingbot and AI crawlers (GPTBot, ClaudeBot, CCBot) fetch this page? robots.txt, sitemap and noindex checked.
BaseSolanaPolygon+1site-audit.x402tookit.comfrom $0.034 endpoints - PPhone Number ToolsData & research
Look up which regions use a country calling code (+44, +1) or a region's code, dialing prefixes and national prefix.
BaseSolanaPolygon+1phone-tools.x402tookit.comfrom $0.025 endpoints - OOpen SearchSearch & web
One query across Wikipedia, Hacker News, Crossref papers and Wikidata: top hits from each, source-labelled and interleaved.
BaseSolanaPolygon+1open-search.x402tookit.comfrom $0.025 endpoints - AAgent ReadyAI & agents
Which discovery files does a site publish? Checks openapi.json, .well-known/x402, agent-card.json, mcp.json and ai-plugin.json.
BaseSolanaPolygon+1agent-ready.x402tookit.comfrom $0.033 endpoints - SScripture LookupOther services
Bible book facts: chapters, testament, order and abbreviations for one of the 66 books, or the full table (1189 chapters).
BaseSolanaPolygon+1scripture.x402tookit.comfrom $0.024 endpoints - Ppegproof.comCrypto & DeFi
Current summary row for one Robinhood tokenized-stock token: total supply, treasury balance, multiplier, and whether the queried address is a known look-alike of a tracked token. Identify by ticker or exact contract address. On-chain observations reconstructed from chain event logs, not financial advice.
BaseArbitrumpegproof.comfrom $0.0022 endpoints - RRecurrence Rules (RRULE)Other services
Dates for every N business days, or the last or Nth business day of each month, skipping weekends and your holiday list.
BaseSolanaPolygon+1recurrence-rules.x402tookit.comfrom $0.024 endpoints - BBulk ExportsData & research
USGS earthquakes in a date window (up to 31 days) above a minimum magnitude: time, magnitude, place, lat/lon, depth.
BaseSolanaPolygon+1bulk-exports.x402tookit.comfrom $0.504 endpoints - PPuzzle SolversOther services
Optimal Tower of Hanoi move list for up to 10 disks between pegs A, B and C, and the minimum move count 2^n - 1.
BaseSolanaPolygon+1puzzle-solvers.x402tookit.comfrom $0.023 endpoints - RResearch Paper ChecksSocial & people
Researcher profile by name: works, citations, h-index and institution of the best match, with an ambiguity warning.
BaseSolanaPolygon+1research-papers.x402tookit.comfrom $0.022 endpoints - PPlumbing & Pipe Flow CalcOther services
Flow rate in gpm and litres per minute from a bucket test: container volume and seconds to fill, with a daily-use estimate.
BaseSolanaPolygon+1plumbing-calc.x402tookit.comfrom $0.022 endpoints - UUnicode Text Safety ToolsOther services
Detect Trojan Source bidi controls (CVE-2021-42574): overrides, isolates, unbalanced openers, stray closers, with positions.
BaseSolanaPolygon+1unicode-text-tools.x402tookit.comfrom $0.023 endpoints - TTrade and Customs ReferenceSearch & web
List a Harmonized System 2022 chapter (01-97): title, section, and its headings or 6-digit subheadings.
BaseSolanaPolygon+1trade-reference.x402tookit.comfrom $0.023 endpoints - PPulseNetworkMarkets & finance
How to make money with AI — one tailored business-in-a-box. Give a goal, budget and interests; get a specific business to start now: the exact real-time PulseNetwork API engine to build it on, suggested pricing, unit economics, monetization paths, and a fork-and-ship starter kit. Turns 'find me a way to earn / passive income / start a business' into a concrete plan. For agents tasked with making m
BaseSolanaPolygon+8pulse.theaslangroupllc.comfrom $0.011 endpoint - SStar CatalogOther services
List catalogued stars in an IAU constellation (name or 3-letter code), brightest first, with an optional named-only filter.
BaseSolanaPolygon+1star-catalog.x402tookit.comfrom $0.022 endpoints - SSEC Filing SearchMarkets & finance
Find SEC filings containing a phrase, filtered by form (10-K, 8-K, S-1...) and the last N days, with links.
BaseSolanaPolygon+1sec-search.x402tookit.comfrom $0.022 endpoints - Aapi.borisinc.comOther services
No description yet.
BaseSolanaPolygon+1api.borisinc.comfrom $0.0011 endpoint - UUS Treasury MacroMarkets & finance
US Treasury official quarterly reporting exchange rate for a country's currency, with effective date and prior quarters.
BaseSolanaPolygon+1treasury-macro.x402tookit.comfrom $0.021 endpoint - SSpace WeatherData & research
Active sunspot regions on the Sun now: count, complex magnetic types that can flare, and recent flare counts.
BaseSolanaPolygon+1space-weather.x402tookit.comfrom $0.021 endpoint - RRadio & RF CalcDeveloper tools
Convert power between dBm, dBW, mW and W, and the RMS and peak voltage across 50 ohms (or your impedance).
BaseSolanaPolygon+1radio-calc.x402tookit.comfrom $0.021 endpoint - PPortfolio StatsOther services
Rolling mean return and rolling annualized volatility over a window, from a price or return series you supply.
BaseSolanaPolygon+1portfolio-stats.x402tookit.comfrom $0.021 endpoint - PPhysics CalculatorsOther services
Blackbody radiation: Wien peak wavelength and frequency, Stefan-Boltzmann power per area, and total power for an area or sphere.
BaseSolanaPolygon+1physics-calc.x402tookit.comfrom $0.021 endpoint
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.