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 call276,921 priced of 279,557 matched · 4,132 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
279,557 services matched
ActivityAgent
Any
Any
Any
orbisapi.com
Score your RAG pipeline — detect hallucinations, weak retrieval & off-topic answers instantly
$0.0050—101Offline
orbisapi.com
Agent-ready monitoring, anomaly detection and alert intelligence
$0.0050—102Offline
orbisapi.com
Parse resumes, score fit, flag risks & rank candidates — plug-in screening for any hiring platform.
$0.0050—101Offline
orbisapi.com
Know exactly what your customers feel and want — sentiment, intent, emotion, urgency, and recommended action in one call
$0.0050—101Offline
orbisapi.com
Score sovereign AI workload fit from data residency, sector sensitivity, latency, auditability, and cloud control
$0.0050—103Offline
orbisapi.com
Score, rank, classify, and schedule tasks for AI agents and productivity workflows
$0.0050—101Offline
orbisapi.com
Compare two texts, get word diffs, similarity scores and change summaries — built for AI agents
$0.0050—101Offline
orbisapi.com
Multi-provider AI text generation with automatic Anthropic and OpenAI fallback
$0.0050—104Offline
orbisapi.com
Analyze, clean, slugify, and extract keywords from text in one API
$0.0050—101Offline
orbisapi.com
Assess ERC-20 and SPL token contract risk, honeypot detection, and liquidity analysis
$0.0050—103Offline
orbisapi.com
Track upcoming token unlocks, vesting schedules, and price impact analysis
$0.0050—101Offline
orbisapi.com
Test tool invocation contracts for required fields, response shape, error semantics, and retry behavior
$0.0050—102Offline
orbisapi.com
Format and normalize webhook payloads to standard schema
$0.0050—102Offline
orbisapi.com
Analyze, optimize, and generate high-performing X (Twitter-style) content for AI agents and creators
$0.0050—101Offline
ot-intel-api.onrender.com
Live CISA ICS-CERT advisories filtered by vendor or sector. Pass ?vendor=siemens or ?sector=energy. Returns advisory IDs, CVSS scores, CVE lists, OT severity, and sector tags. Up to 25 results.
$0.020—101Live
ot-intel-api.onrender.com
Deploy and scale any app or agent from your first user to your billionth. Build faster on intuitive cloud infrastructure for the modern web.
$0.050—101Live
ozmium.org
An onchain strategic wallet interface to trade, earn, borrow, and leverage tokens easily using Based services.
$0.0010—108Live
ozmium.org
Ozmium is an AiFi and DeFi terminal on Base: non-custodial spot trading, up to 200x leverage, loans, vault yield, and live arbitrage. Browse free, connect a wallet to go on-chain.
$0.0010—107Live
palmyr.ai
Phone, email, compute, domains — paid with USDC via x402. Give your AI agent superpowers.
$0.010—105Live
payments-intel-production.up.railway.app
What are the symbol, name, decimals, contract address and issuer of this stablecoin on this chain? Cited stablecoin token facts from a prepared dataset (USDC, EURC, USDT, PYUSD, DAI on the chains /v1/…
$0.0010—108Live
pennyregwatch.com
Monitor Texas childcare regulatory records and receive email alerts when important HHSC information changes.
$0.0040—105Live
perp-gap-api.perpgap.workers.dev
Pay-per-call API for AI agents: stock-perp price gaps across trade.xyz, Aster and Lighter vs the real stock and Solana xStocks, plus funding, basis, OI, research cards, history and rule-based verdicts…
$0.010—104Live
picklecheck.onrender.com
PickleCheck endpoint check: is it safe to pay this x402 endpoint? Reads its payment offer and pay-to wallet (sanctions, Circle blocklist, changed pay-to, history, buyers) before you pay. It looks, nev…
$0.0050—102Unknown
presign-guard.onrender.com
A green, orange or red verdict before an AI agent signs a transaction, approval or signature. $0.01 per check in USDC via x402 on Base.
$0.010—103Live
pyfile-agent.taile3ff35.ts.net:10000
Web search: ranked results (title + url) for a query. ?q=x402+agent+payments&limit=8
$0.0030—106Live

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. 279,557 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.