Services
The x402 service directory, ranked by verified on-chain volume. Add one to an agent as a skill and pay per call — no key, no account. To compare every seller of one job on a shared price, see Unified Services.
x402 call market
Listed price · per call25 priced of 25 matched · 17 providers · across this page only
$0.010
Median
$0.0020$0.250
- $0.0030
- p25
- $0.030
- p75
- $0.0010
- low
- $0.300
- high
The box is the middle half of the market, $0.0030 to $0.030; the whiskers reach the 10th and 90th percentiles and the axis between them is logarithmic. Listed prices only — what a service asks, not what it was paid.
CategoryAll categories
| Activity | Agent | ||||||
|---|---|---|---|---|---|---|---|
Any | Any | Any | |||||
Maxwell x402Other api.maxwellinternational.ainpm package card from the official registry: latest or a given version, description, license, maintainers, keywords, repository, dependencies count and publish dates. Required: name; optional: version… | $0.0050 | — | 12 | 4 | Live | ||
api.maxwellinternational.ai Ski-trip data for AI agents: resorts, snow forecasts, lodging, rental, food and après around ski areas, paid per request over x402. | $0.010 | — | 12 | 3 | Live | ||
Maxwell x402Other api.maxwellinternational.aiActive NWS alerts for one US state or territory (full name, e.g. Colorado): event, severity, urgency, certainty, headline, area, onset and end times. From the NWS (US and territories), cached and refr… | $0.0050 | — | 12 | 4 | Live | ||
Maxwell x402Other api.maxwellinternational.aiMost recent NWS station observation (by stationId, or the station nearest a lat/lon): temperature, dewpoint, wind, humidity, pressure, conditions, with observedAt showing when it was measured. From th… | $0.0050 | — | 12 | 3 | Live | ||
Mekler AISearch api.mekler.aiCheck one email address or domain. Report common address syntax, MX or null MX and A/AAAA fallback, SPF, exact-domain DMARC and optional caller-supplied DKIM selector records, and a small known dispos… | $0.0030 | — | 12 | 12 | Live | ||
Particle ProMedia api.particle.proList related podcasts. Returns the shows most related to a podcast, best first, each with a calibrated score, a coarse band (strong, moderate, weak) to branch on, and — with include=basis — the signal… | $0.030 | — | 12 | 1 | Live | ||
api.paywallwatch.com Use when an agent needs email validation, screening only, for an address from a form, a scrape or a CRM and must decide whether it is worth sending to. Screens the address: syntax, DNS mail exchanger,… | $0.0030 | — | 12 | 4 | Live | ||
api.relaystation.ai Baton is pay-per-call storage, handoff, and cryptographic proof on Relaystation. An agent signs one USDC payment and gets a result — no account required — or a developer signs in, tops up, and uses an… | $0.010 | — | 12 | 1 | Live | ||
Runx MarketplaceData api.runx.aiBuy Ausca synchronous document OCR through one immutable Runx marketplace listing and return receipt-bound OCR evidence. | $0.050 | — | 12 | 1 | Live | ||
| $0.0010 | — | 12 | 10 | Live | |||
| $0.0010 | — | 12 | 8 | Live | |||
api.sitecheck-api.workers.dev Pay-per-call tools for AI agents: image generation, speech-to-text, text-to-speech, embeddings, LLM chat, website audits and contact enrichment, web page to Markdown reader, PDF to text, sitemap URLs,… | $0.0020 | — | 12 | 6 | Live | ||
api.solenrich.com Agent-native onchain intelligence for Solana traders: cross-venue perps funding (Jupiter, Adrena, Flash, Hyperliquid), smart-money & whale tracking, token due-diligence and rug detection, and wallet r… | $0.0020 | — | 12 | 7 | Live | ||
api.stablecoingateways.com Domain lookup and due diligence (DNS, WHOIS/RDAP, email security): give a domain or hostname, get DNS records (A, AAAA, MX, NS, TXT, CAA), SPF, DMARC, DKIM and MTA-STS email-auth posture, HTTPS/HSTS s… | $0.0030 | — | 12 | 4 | Live | ||
api.stablecoingateways.com Merchant check (KYB facts) before an agent pays: give a merchant's domain and optionally its company name, get neutral sourced facts in one call for merchant verification and vendor due diligence: dom… | $0.010 | — | 12 | 5 | Live | ||
api.stocktrends.com Historical sector, industry-group, or industry breadth series. Default canonical equity history is CS+UN across A/N/Q/T. | $0.300 | — | 12 | 1 | Live | ||
api.stocktrends.com Historical sector leadership rotation derived from Stock Trends trend distribution, relative performance, and trend maturity measures. | $0.300 | — | 12 | 1 | Live | ||
api.stocktrends.com Latest Stock Trends leadership summary identifying overall, sector, and industry-group leaders using relative performance and trend-alignment filters. | $0.250 | — | 12 | 1 | Live | ||
api.stocktrends.com Current market regime classification from directional Stock Trends trend states for canonical CS+UN equities across A/N/Q/T. | $0.150 | — | 12 | 1 | Live | ||
api.strale.ioSearch api.strale.ioVerify if a person meets a minimum age requirement based on their date of birth. Returns exact age, whether the threshold is met, and days until the threshold (if not met). Accounts for leap years. | $0.022 | — | 12 | 2 | Live | ||
api.strale.io Validate an IBAN number. Checks format, length, and mod-97 checksum. Extracts country code, bank identifier, and branch code. Pure algorithmic — fast and cheap. | $0.054 | — | 12 | 1 | Live | ||
TruthPalOther api.thetruthpal.comCheck whether a supplied public source supports or contradicts a factual claim. Validate citations in AI-generated answers against the supplied URL. TruthPal returns source-grounded evidence and a sup… | $0.020 | — | 12 | 6 | Live | ||
api.vextorium.com Key indicators of any country: GDP, real growth, GDP per capita, inflation, population, unemployment, public debt, exports, life expectancy and internet use, with the last years of each. World Bank op… | $0.0050 | — | 12 | 4 | Live | ||
api.vrsai.tech Machine-native capabilities with explicit contracts and machine-readable commerce. | $0.010 | — | 12 | 10 | Live | ||
api.webbersites.com WebberSites – Branding, Web Design, Photography, Marketing Strategy - Youngstown Ohio | $0.010 | — | 12 | 3 | Live |
Hand this page to an agent
Copy the prompt and paste it into Claude, an MCP client or your own agent — it will find and price a paid API you can call over the free read API. No key, no account.
GET api.roundhouseai.io/v0/endpoints
Verified volume and provider trust are Roundhouse-only signals; activity is settlements to the service's payee wallet over 30 days, 5-day smoothed.
Show the promptHide the prompt
Using Roundhouse, find x402 endpoints that can do what I need, tell me what each call costs, and whether the endpoint answered when last probed. curl -s 'https://api.roundhouseai.io/v0/endpoints?q=<what-you-need>' Then check the merchant's real payment record before paying: curl -s 'https://api.roundhouseai.io/v0/merchants/<payTo-wallet>' Always read the price from the live 402, never from a cached figure. The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except /v0/unified* and /v0/endpoints. Either pay over x402 (mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.