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

Otto AI

x402.ottoai.services

Verified volume

$0.10

$0.0010 per call

Live

x402 call market

Listed price · per call219,433 priced of 221,437 matched · 3,948 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

221,437 services matched


	Any	Any			Any
api.myceliasignal.comMedia api.myceliasignal.com Mycelia Signal delivers real-time, cryptographically signed data to AI agents and autonomous systems over HTTP. Four-layer data pyramid: Oracle Data (170+ raw endpoints), Oracle Information (market st…	$0.010	—	97	5	Live
NansenData api.nansen.ai Trade everything onchain with AI, powered by 500M+ labeled addresses. Track Smart Money, analyze any token, and execute instantly - all in one place.	$0.010	—	97	29	Live
keyring-agent.blockchhub.linkOther keyring-agent.blockchhub.link Your DeFi Assistant	$0.050	—	97	8	Live
Web Search, News & Page ReaderSearch websearch.use.x402atlas.com x402 Atlas provides real-time x402 analytics for autonomous APIs on Base. Track transactions, discover trends, and analyze the x402 ecosystem.	$0.010	—	97	25	Live
2sTrading 2s.io The (most) everything API: 575+ pay-per-call endpoints for AI agents — ground-truth data, a full AI gateway, and agent infrastructure (storage, queues, watchers). USDC via x402, no signup, no API keys…	$0.0036	—	96	2	Live
AiSpace VeniceInference x402.aispace.bot Pay-per-request Venice inference via x402. Chat, image, video, audio, search, and RPC — USDC on Base, no API key. OpenAI-compatible /api/v1 at x402.aispace.bot.	$0.650	—	96	5	Live
api.onesource.ioOther api.onesource.io Ethereum mainnet and Sepolia testnet RPC for AI agents, served from OneSource-operated nodes. Live block, balance, contract, NFT, transaction, and event data. Pay per call or use batch/session mode —…	$0.0030	—	95	95	Live
Card HedgeSearch api.cardhedger.com Get all latest prices for a card across all available grades. · needs a card_id (resolve via card-search, card-match, or image-match)	$0.010	—	94	1	Live
api.myceliasignal.comTrading api.myceliasignal.com Mycelia Signal delivers real-time, cryptographically signed data to AI agents and autonomous systems over HTTP. Four-layer data pyramid: Oracle Data (170+ raw endpoints), Oracle Information (market st…	$0.050	—	94	4	Live
X PayInference www.api-xpay.com AI topic classification of text	$20.00	—	94	91	Live
api.myceliasignal.comTrading api.myceliasignal.com Mycelia Signal delivers real-time, cryptographically signed data to AI agents and autonomous systems over HTTP. Four-layer data pyramid: Oracle Data (170+ raw endpoints), Oracle Information (market st…	$0.050	—	93	4	Live
api.strale.ioData api.strale.io Test page speed using Google PageSpeed Insights API. Returns performance score, Core Web Vitals, optimization opportunities.	$0.054	—	93	1	Live
GlassnodeData x402.glassnode.com Percent Balance on Exchanges — The percentage of supply held on exchange addresses. Data by Glassnode.	$0.050	—	93	9	Live
api.myceliasignal.comTrading api.myceliasignal.com Mycelia Signal delivers real-time, cryptographically signed data to AI agents and autonomous systems over HTTP. Four-layer data pyramid: Oracle Data (170+ raw endpoints), Oracle Information (market st…	$0.050	—	92	3	Live
api.myceliasignal.comTrading api.myceliasignal.com MSVI Ethereum volatility index — composite of realized vol, implied vol, term structure, funding stress and put/call ratio — Ed25519 signed attestation	$0.050	—	92	3	Live
WebberSites x402 Data APISearch api.webbersites.com WebberSites – Branding, Web Design, Photography, Marketing Strategy - Youngstown Ohio	$0.010	—	92	7	Live
api.x402node.devTrading api.x402node.dev x402node — precise, deterministic developer and data tools for AI agents. Chain data, parsing, crypto, conversion. Pay-per-call over x402, settled in USDC on Base.	$0.0040	—	92	20	Live
Otto AISearch x402.ottoai.services 65 pay-per-call AI services on x402 V2 — market intel, DeFi execution, AI creative tools. USDC on Base, Polygon, or Solana. Permit2-ready, SIWX for repeat access. From $0.001 per call.	$0.0010	$0.10(3)	90	11	Live
Web Search + Page ReaderSearch api.kadec0.xyz one call returns a paper	$0.080	—	90	2	Live
kleros-ipfs-gateway.fly.devInfra kleros-ipfs-gateway.fly.dev Pin a file to IPFS	$0.010	—	90	1	Live
reefjacoData molecular-packs-metadata-docs.trycloudflare.com Expose your local server to the Internet with a single command. No account, no DNS, no configuration required.	$1.00	—	90	34	Offline
TenjinInference tenjin.sh Tenjin's tool router. Send a turn's bounded conversation packet, or a one-line query, and get which pay-per-call x402 service fits the step, if any, with its spec to fill and pay yourself. $0.003 per…	$0.0030	—	90	17	Live
Losbeto Market IntelligenceSearch api.losbeto.xyz Filtered crypto and markets newswire for agents and research bots: headlines with source and timestamp, noise removed.	$0.010	—	89	6	Live
QuickNodeInfra x402.quicknode.com The fastest RPC is now the whole stack: nodes, real-time streams, indexed data, and trading execution from one Quicknode account. Measured, not claimed.	$10.00	—	89	2	Live
Pocket NetworkData agent.pocket.network Decode the event logs of an Ethereum transaction: ERC-20 Transfer events come back typed (from, to, raw value, contract); every other log is returned raw with its topics and data. Values are in base u…	$0.0050	—	88	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. 221,437 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.