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 call265,380 priced of 267,807 matched · 4,060 providers
$0.010
Median
$0.0020$0.035
$0.0050
p25
$0.010
p75
$0.0000
low
$1,000,000.00
high

The box is the middle half of the market, $0.0050 to $0.010; 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
267,807 services matched
ActivityAgent
Any
Any
Any
api.agentweather.io
Pay Radar: pre-payment readings for an XRPL x402 endpoint (GET /v1/paycheck?url={endpoint}; alias /v1/payradar). Reads its 402 without paying and lists raw readings first: x402 shape, network, asset (…
$0.0030—126Live
api.ai-open-models.com
Routes requests across open-weight models using task fit, tool calling, vision, JSON format, context, output capacity, provider availability, and price. Send POST application/json with model set to ai…
$0.0020—123Live
api.arysphere.com
Token Supply Lookup: total supply of any ERC-20 on Ethereum mainnet. Total supply of an ERC-20 token contract on Ethereum via totalSupply given token address.
$0.0030—125Live
api.arysphere.com
Nonce Check: transaction count for any address on Ethereum mainnet. Returns the number of transactions sent from an Ethereum address (eth_getTransactionCount).
$0.0030—125Live
EthereumTrading
api.arysphere.com
Gas Price Check: current Ethereum gas price on Ethereum mainnet. Returns the current Ethereum mainnet gas price in wei; takes no parameters.
$0.0030—124Live
api.arysphere.com
Ethereum mainnet ERC-20 verdict: AI grade and on-chain facts for one token contract. Not financial advice. Returns: a rule-graded token verdict on one token contract: grade (BASED/MID/COOKED/RADIOACT…
$0.010—123Live
api.cardhedger.com
Search for cards with flexible filtering options.
$0.010—121Live
api.clawfetch.ai
Structured data extraction returning typed JSON from 17 specialized site extractors: Twitter/X, GitHub, CoinGecko, Hacker News, YouTube, Wikipedia, npm, PyPI, crates.io, Product Hunt, IMDb, Amazon, Cr…
$0.0080—126Live
api.cortexcloud.org
Result reranking by relevance (Cohere primary, Jina fallback). x402-paid, USDC on Base.
$0.0060—121Live
api.cra-agent.tech
CRA AGENT is the x402 payment agent for Arc, Circle
$0.0010—126Live
api.dripmetrics.ai
DripMetricsAI (https://dripmetrics.ai/) provides on-demand market microstructure metrics, Hyperliquid trade, participant, and candle metrics, AI-explained BTC market summaries, Polymarket diagnostics,…
$0.050—124Offline
api.geoprimitives.dev
Give it a longitude and latitude and it answers with the IANA timezone identifier (America/New_York), the UTC offset in force there right now, whether daylight saving is currently in effect and by how…
$0.0050—126Live
api.getanyapi.com
Access 363 scraping and data APIs behind one key with automatic failover when a provider breaks. Pay per request from a prepaid USD wallet. No card to start.
$0.0010—126Live
api.glianalabs.com
GlianaAI - Pay-per-call AI models, live market data, SEC filings and identity APIs, no signup, USDC. This resource: tools/domain-lookup. Who registered a domain, how old it is, and where its DNS point…
$0.0020—126Live
api.hergertsynthora.com
SYNTHORA github-repo-activity: Activity metrics for any public GitHub repo (input owner/repo): stars, forks, open issues, last push, language, archived flag. 10-min in-process cache, stale-on-rate-lim…
$0.030—122Live
api.hivemindos.app
Search the news: news articles for a search, each with its headline, address, outlet, a line of text and when it was published. Use when an agent needs the latest news articles on a topic, optionally…
$0.010—124Live
api.kadec0.xyz
Author and researcher profile search. An author name returns matching researchers with current affiliation, publication count, total citations, h-index and i10-index, and their most-cited papers — for…
$0.020—124Live
api.kadec0.xyz
Real-time earthquake feed. Recent seismic events from USGS with magnitude, location, depth, and tsunami flag, filterable by magnitude, time, and radius.
$0.0050—125Live
api.kadec0.xyz
DeFi yield and APY across pools. Returns the top yield-farming pools via DefiLlama with current APY, base and reward APY split, TVL, chain, and project, filterable by chain, project, symbol, stablecoi…
$0.030—122Live
api.kakerapetit.dev
EDINET filing calendar: annual securities reports (yukashoken hokokusho) filed by Japanese listed companies in a date range. Returns company code, EDINET document ID, fiscal period, accounting standar…
$0.0020—128Live
api.macaroonnetwork.com
Search a privacy-safe metadata index derived from 77,053 archived census rows and deduplicated to 23,370 unique content hashes. Includes readiness, quarantine, domain, file type, field names and prove…
$0.0020—127Live
api.marketintelligenceapi.com
Crypto price and order flow snapshot of one asset ($0.001): price, price change, buy pressure from on-chain swaps (arbitrage, MEV and bots excluded), signal, event, confidence and trade count for a cr…
$0.0010—122Live
api.marketintelligenceapi.com
Gas price now on every EVM chain ($0.001): base fee, priority fee percentiles and the USD cost of a transfer and a DEX swap on Ethereum, Base, Arbitrum, Optimism, Polygon and other chains, cheapest fi…
$0.0010—129Live
api.maxwellinternational.ai
maxwellinternational.ai is available. Inquire via Afternic or email domains@maxwellinternational.ai.
$0.0050—123Live
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.
$0.0050—124Live

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. 267,807 catalog entries indexed.

Open skill.md
Show 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.