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 call262,605 priced of 265,032 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
265,032 services matched
ActivityAgent
Any
Any
Any
Tiered payment receipt (tier 3)Data
aeml-x402.zeabur.app
Tiered payment receipt (tier 3): pay once with x402 and get back a short-lived receipt token that /pay/verify checks for you. The tier is fixed by the path - you do not send it. Optional ?ref= carries…
$0.100—122Live
URL to Markdown ReaderSearch
agent-data.centorprat.workers.dev
Deploy serverless functions globally in seconds. No cold starts, 330+ cities, infinite concurrency, and pay only for CPU time. Support for JavaScript, TypeScript, Python, and Rust.
$0.0040—123Live
Agent Evidence API & US WeatherSearch
agent-evidence-api.thx93.workers.dev
Deploy serverless functions globally in seconds. No cold starts, 330+ cities, infinite concurrency, and pay only for CPU time. Support for JavaScript, TypeScript, Python, and Rust.
$0.010—121Live
agent-sec-lookup.iykykblog.workers.devOther
agent-sec-lookup.iykykblog.workers.dev
Deploy serverless functions globally in seconds. No cold starts, 330+ cities, infinite concurrency, and pay only for CPU time. Support for JavaScript, TypeScript, Python, and Rust.
$0.0050—127Live
MassiveData
agent.massive.com
Stock API with real-time and historical tick data, unlimited usage via REST or WebSockets, standardized JSON and CSV formats. Instant access free tier.
$0.010—125Live
A2A Agent Card fetchData
agent402.tools
101 skill packs that do a whole agent job in one x402 payment - research a stock, audit a domain
$0.0050—125Live
Date arithmeticOther
agent402.tools
102 skill packs that do a whole agent job in one x402 payment - research a stock, audit a domain
$0.0010—125Live
New B20 tokensOther
agent402.tools
92 skill packs that do a whole agent job in one x402 payment — research a stock, audit a domain
$0.0050—125Live
Base / radix convertOther
agent402.tools
102 skill packs that do a whole agent job in one x402 payment - research a stock, audit a domain
$0.0010—125Live
Brotli decompressData
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—125Live
Calldata decoder (ABI orData
agent402.tools
Decode EVM smart-contract transaction calldata into the function name and typed parameters. Supply an ABI (from /api/contract-abi) or a signature like transfer(address,uint256) for a fully offline dec…
$0.0030—125Live
Chain info 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.
$0.0010—125Live
ERC-1155 balanceData
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—125Live
Pending blockTrading
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—125Live
Code executionInfra
agent402.tools
Execute Python or JavaScript code in a secure, isolated cloud sandbox. Returns stdout, stderr, and the expression result. No setup needed; pay per call via x402. 30s timeout, 10k char code limit. A ru…
$0.020—124Live
Verified contract sourceData
agent402.tools
Fetch the verified Solidity source files and compiler metadata for a contract address from an open verified-contract repository. Covers 8 EVM mainnets (ethereum, base, polygon, arbitrum, optimism, bsc…
$0.0050—124Live
CountOther
agent402.tools
Count characters, words, lines, and (optionally) occurrences of a substring in text.
$0.0010—125Live
Crypto market pulseMedia
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.
$0.0040—125Live
Crypto order bookTrading
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…
$0.0010—124Live
Date formatData
agent402.tools
The open x402 index — discovery, routing, and on-chain ranking for the agent payments economy. /api/find resolves tasks to tools, /api/route is the neutral Smart Order Router across every x402 seller,…
$0.0010—125Live
DeFi TVL by chainTrading
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—125Live
DKIM key lookupSocial
agent402.tools
101 skill packs that do a whole agent job in one x402 payment - research a stock, audit a domain
$0.0020—124Live
DMARC checkSocial
agent402.tools
101 skill packs that do a whole agent job in one x402 payment - research a stock, audit a domain
$0.0010—124Live
DNS lookupInfra
agent402.tools
Resolve any DNS record type for a host: A, AAAA, MX, TXT, CNAME, NS, SOA, CAA, SRV, PTR. Returns the records plus a count. Built on Node's native resolver - no external API.
$0.0020—125Live
EDGAR Form 13F data sets (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.
$0.0030—125Live

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. 265,032 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.