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 call224,839 priced of 226,845 matched · 3,958 providers
$0.010
Median
$0.0020$0.050
- $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
226,845 services matched
| Activity | Agent | ||||||
|---|---|---|---|---|---|---|---|
Any | Any | Any | |||||
scvd.store An evidence observatory for agentic commerce: free x402 conformance checks of any issuer | $0.0010 | — | 62 | 15 | Live | ||
x402-gatewayMedia x402.freeq.oneMermaid Diagram Renderer: Render a Mermaid diagram to an image (PNG or SVG). Returns a base64-encoded image (MCP content type image). Options: format (png|svg), theme (default|dark|forest|neutral), sc… | $0.0050 | — | 62 | 3 | Live | ||
x402.freeq.one 15 tools. Pay per use. No accounts. No logins. No API keys. x402 payment protocol on Base. | $0.0020 | — | 62 | 3 | Live | ||
x402-gatewayInfra x402.freeq.oneWhale Alerts Scanner: Scan recent blocks for large ETH transfers involving an address. Filter by direction (in/out/both) and threshold. Pay per call in USDC on Base via x402 — POST https://x402.freeq.… | $0.0020 | — | 62 | 3 | Live | ||
x402.ottoai.services 89 pay-per-call AI services on x402 V2 — market intel, DeFi execution, AI creative tools. USDC on Base on every endpoint, plus Solana USDC wherever a route’s 402 lists it. Permit2-ready, SIWX on selec… | $0.0030 | — | 62 | 40 | Live | ||
agent402.tools Resolve a US stock ticker (e.g. AAPL) to its SEC CIK number, the primitive every other EDGAR call needs. Returns ticker, cik (zero-padded, 0000320193), cikInt (320193) and the registered company name.… | $0.0010 | — | 61 | 4 | Live | ||
agent402.tools Option chain for a US-listed ticker: all listed expiration dates, the strike ladder, and per-contract bid/ask/last/volume/open-interest/implied-volatility for calls and puts at one expiry (nearest by… | $0.0050 | — | 61 | 2 | 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… | $0.030 | — | 61 | 6 | Live | ||
api.vextorium.com Search scientific papers on arXiv (AI, physics, maths, economics...): title, authors, abstract, categories, dates and PDF link; by relevance or newest, with category filter (cs.AI, cs.CR, q-fin...). | $0.0030 | — | 61 | 5 | Offline | ||
gateway.spraay.app Send crypto to 200+ recipients in a single transaction. Batch ETH and ERC-20 payments on Base. Integrated with Google ADK and AWS Strands. | $0.0010 | — | 61 | 8 | Live | ||
| $0.010 | — | 61 | 11 | Live | |||
quartermaster.surewhynot.app Pay-per-call utility, AI, crypto, and x402 tools for AI agents. USDC over x402 on Base. MCP server + HTTP API. No accounts, no API keys. | $0.0010 | — | 61 | 10 | Live | ||
stabletravel.dev Pay-per-request access to flights, award availability, hotels, activities, and transfers. No auth, no subscriptions. | $0.054 | — | 61 | 10 | Live | ||
| $0.0040 | — | 61 | 5 | Live | |||
weather.payapi.market The UK marketplace for x402 APIs. 44 live APIs for AI agents. Property, companies, weather, vehicles, finance, HMO licensing, waste collection, air quality, text analytics, and more. 124,715+ UK licen… | $0.0010 | — | 61 | 31 | Offline | ||
x402-gatewayInfra x402.freeq.oneCross-Chain Balance Checker: Aggregate native balance and token/NFT counts for an address across eth, arb, base, polygon, opt. Pay per call in USDC on Base via x402 — POST https://x402.freeq.one/tools… | $0.0020 | — | 61 | 3 | Live | ||
x402-gatewayInference x402.freeq.oneHTML to Markdown Converter: Convert an HTML string to clean, LLM-ready Markdown. Handles headings, links, images, tables, lists and code blocks. Options: heading style (atx|setext), bullet list marker… | $0.0020 | — | 61 | 3 | Live | ||
x402-gatewayMedia x402.freeq.oneOG Image Generator: Generate an Open Graph social-card image (1200x630 PNG) from a title and description. Returns a base64-encoded image (MCP content type image). Optional image URL embeds a header gr… | $0.0020 | — | 61 | 3 | Live | ||
x402.freeq.one 15 tools. Pay per use. No accounts. No logins. No API keys. x402 payment protocol on Base. | $0.0020 | — | 61 | 3 | Live | ||
x402.openwebninja.com The web data & SERP API stack for AI engineers, app developers, and GTM teams. 40+ fast and reliable APIs for accurate, real-time public data from across the web. | $0.0030 | — | 61 | 2 | Live | ||
x402.orthogonal.com Discover, call, and pay for 800+ endpoints from 50+ verified providers, through one integration. Pay per call, no subscription. | $0.010 | — | 61 | 3 | Live | ||
agent402.tools 92 skill packs that do a whole agent job in one x402 payment — research a stock, audit a domain | $0.010 | — | 60 | 5 | Live | ||
api.aidress.ai A2A transaction infrastructure for autonomous AI agents. Discovery, identity, trust, terms, and routing — the coordination layer for the agentic economy. | $0.0010 | — | 60 | 16 | Live | ||
api.apify.com Thousands of tools to automate your business. Get real-time web data, track competitors, generate leads, and integrate your apps and AI agents. | $1.00 | — | 60 | 1 | Live | ||
Congress Stock TradesTrading api.kadec0.xyzUS congressional stock trades. Stock transactions disclosed by members of the House and Senate under the STOCK Act — politician, ticker, amount, and date. | $0.050 | — | 60 | 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. 226,845 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.