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 call271,355 priced of 273,816 matched · 4,077 providers
$0.010
Median
$0.0020$0.030
- $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
273,816 services matched
| Activity | Agent | ||||||
|---|---|---|---|---|---|---|---|
Any | Any | Any | |||||
agent402.tools Top keywords and two-word phrases by frequency (stopwords removed). Cheap, deterministic signal for routing, tagging, and dedup. | $0.0020 | — | 11 | 4 | Live | ||
agent402.tools Agent402 is the applied layer of Agentic Finance: the open index, Smart Order Router and on-chain ranking for agents that pay and get paid over x402 and MPP. Sell your API for USDC per call, or give y… | $0.0020 | — | 11 | 4 | Live | ||
agent402.tools Check whether a year is a leap year and get related info: days in that year, the next and previous leap years, and the Gregorian leap-year rule. | $0.0010 | — | 11 | 4 | Live | ||
agent402.tools Deterministic web tools your agent can call and pay for per request: live search and cited answers first, then 500+ tools from $0.001. USDC over x402 on 12 rails (plus USDG on Robinhood), or free via… | $0.0050 | — | 11 | 4 | Live | ||
agent402.tools Levenshtein edit distance between two strings, plus a 0-1 similarity ratio. | $0.0010 | — | 11 | 4 | Live | ||
agent402.tools Fit a least-squares line y = slope·x + intercept to two equal-length series. Returns slope, intercept, r² (variance explained), and optionally predicted y values for new x inputs - useful for trend ex… | $0.0010 | — | 11 | 4 | Live | ||
agent402.tools Compute the monthly (or per-period) payment on a fully-amortizing loan: mortgage, auto, student loan, business loan. Returns the periodic payment, total paid over the term, and total interest. Matches… | $0.0010 | — | 11 | 4 | Live | ||
agent402.tools 102 skill packs that do a whole agent job in one x402 payment - research a stock, audit a domain | $0.0010 | — | 11 | 3 | Live | ||
agent402.tools 92 skill packs that do a whole agent job in one x402 payment — research a stock, audit a domain | $0.0010 | — | 11 | 4 | Live | ||
agent402.tools 92 skill packs that do a whole agent job in one x402 payment — research a stock, audit a domain | $0.0010 | — | 11 | 4 | Live | ||
agent402.tools 101 skill packs that do a whole agent job in one x402 payment - research a stock, audit a domain | $0.0020 | — | 11 | 4 | Live | ||
agent402.tools Fetch page metadata for a URL: title, description, OpenGraph, Twitter cards, canonical URL, favicon. | $0.0020 | — | 11 | 4 | Live | ||
agent402.tools Compute simple (SMA) and exponential (EMA) moving averages over a numeric series. Returns one value per input position - the first (window-1) SMA values are null since there isn't enough history. EMA… | $0.0010 | — | 11 | 4 | Live | ||
agent402.tools Fetch NFT collection (ERC-721 / ERC-1155) metadata by contract address on Ethereum, Base, Polygon, Arbitrum, or Optimism: name, symbol, token type, total supply, deployer, OpenSea slug + image, floor… | $0.0020 | — | 11 | 4 | Live | ||
agent402.tools Agentic Finance for AI agents: 500+ pay-per-call tools, metered models and finished reports over x402 and MPP, or by card. No signup, no API keys. | $0.0020 | — | 11 | 4 | Live | ||
agent402.tools Return the NFTs owned by a wallet address on a given network. Each row carries the collection name, contract address, token ID, image URL (where available), and ERC-721 vs ERC-1155 standard. Up to 100… | $0.0020 | — | 11 | 4 | Live | ||
agent402.tools Agent402 is the applied layer of Agentic Finance: the open index, Smart Order Router and on-chain ranking for agents that pay and get paid over x402 and MPP. Sell your API for USDC per call, or give y… | $0.0010 | — | 11 | 4 | Live | ||
agent402.tools 102 skill packs that do a whole agent job in one x402 payment - research a stock, audit a domain | $0.020 | — | 11 | 4 | Live | ||
agent402.tools 92 skill packs that do a whole agent job in one x402 payment — research a stock, audit a domain | $0.0010 | — | 11 | 4 | Live | ||
agent402.tools Compare two OpenAPI 3.x or Swagger 2.x documents and return a structured diff: added / removed / changed endpoints, with a conservative "is any change breaking?" flag. Breaking = an endpoint or requir… | $0.0010 | — | 11 | 4 | Live | ||
agent402.tools Agent402 is the applied layer of Agentic Finance: the open index, Smart Order Router and on-chain ranking for agents that pay and get paid over x402 and MPP. Sell your API for USDC per call, or give y… | $0.0010 | — | 11 | 4 | Live | ||
agent402.tools Flag outliers in a numeric series using either the IQR rule (Tukey fences at 1.5·IQR - robust, default) or z-score (|z| > threshold - assumes normality). Returns the outlier values + their indices + t… | $0.0010 | — | 11 | 4 | Live | ||
agent402.tools 102 skill packs that do a whole agent job in one x402 payment - research a stock, audit a domain | $0.0010 | — | 11 | 4 | Live | ||
agent402.tools Inspect a PDF without downloading the whole thing into your model: page count, title, author, subject, creator, producer, creation/modification dates, encryption flag, and byte size. Body: {"url":"htt… | $0.0010 | — | 11 | 4 | Live | ||
agent402.tools Agentic Finance for AI agents: 500+ pay-per-call tools, metered models and finished reports over x402 and MPP, or by card. No signup, no API keys. | $0.0020 | — | 11 | 4 | 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. 273,816 catalog entries indexed.
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.