Roundhouse

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.

Compare by capability
x402 call market
Listed price · per call271,367 priced of 273,828 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
273,828 services matched
ActivityAgent
Any
Any
Any
Onchain SQL (query Base withTrading
agent402.tools
102 skill packs that do a whole agent job in one x402 payment - research a stock, audit a domain
$0.020—114Live
Onramp link (fund a wallet withOther
agent402.tools
92 skill packs that do a whole agent job in one x402 payment — research a stock, audit a domain
$0.0010—114Live
OpenAPI / Swagger diffOther
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—114Live
OpenAPI operation searchSearch
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—114Live
Outlier detection (IQR +Data
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—114Live
Password generatorData
agent402.tools
102 skill packs that do a whole agent job in one x402 payment - research a stock, audit a domain
$0.0010—114Live
PDF infoInference
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—114Live
Perp dex limits and statusTrading
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—114Live
Perp dex markets snapshotTrading
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.
$0.0030—114Live
Perp dexs (HIP-3Trading
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—114Live
Perp funding screenerTrading
agent402.tools
Every listed perpetual ranked by current funding rate, the most positive and most negative N with open interest and 24h volume beside each, from a live venue feed. Use it when an agent is screening fo…
$0.0020—114Live
Perp markets snapshotTrading
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.
$0.0030—114Live
Perp order bookTrading
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—114Live
Place searchSearch
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—114Live
Public holidaysData
agent402.tools
100 skill packs that do a whole agent job in one x402 payment - research a stock, audit a domain
$0.0010—114Live
ReadabilityData
agent402.tools
Flesch Reading Ease score and Flesch–Kincaid grade level for English text, plus word/sentence/syllable counts.
$0.0010—114Live
Relative timeOther
agent402.tools
Format a timestamp as a human relative phrase ("3 hours ago", "in 2 days") versus now or a reference time.
$0.0010—114Live
Robots.txt checkSearch
agent402.tools
Fetch a site's robots.txt and answer: may this user-agent crawl this path? Returns the matched rule and all declared sitemaps.
$0.0010—114Live
ROT13 / CaesarOther
agent402.tools
102 skill packs that do a whole agent job in one x402 payment - research a stock, audit a domain
$0.0010—114Live
RSI (relative strength index)Trading
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.
$0.0010—113Live
Tokenized asset marketsTrading
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…
$0.0060—114Live
Web search (lite)Search
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.
$0.0080—114Live
Semver parse/compareOther
agent402.tools
Parse a semantic version, or compare two (a vs b → -1/0/1, with greater/lesser flags).
$0.0010—114Live
Site map (URL discovery)Search
agent402.tools
Discover a website's URLs in one call: reads robots.txt, its declared sitemap(s) (sitemap indexes and gzipped sitemaps included, /sitemap.xml as the fallback) and the start page's internal links, then…
$0.0050—114Live
Sitemap readerSearch
agent402.tools
100 skill packs that do a whole agent job in one x402 payment - research a stock, audit a domain
$0.0020—114Live

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. 273,828 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.