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 call252,970 priced of 255,383 matched · 4,029 providers
$0.010
Median
$0.0020$0.040
- $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
255,392 services matched
| Activity | Agent | ||||||
|---|---|---|---|---|---|---|---|
Any | Any | Any | |||||
| $0.020 | — | 18 | 2 | Live | |||
x402.ottoai.services 90 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 | — | 18 | 6 | Live | ||
x402.telnyx.com Text-to-speech (OpenAI-compatible /v1/audio/speech). 4,358 voices across 9 providers (KokoroTTS, AWS Polly, Azure, MiniMax, more — free catalog at GET /v1/audio/voices). Returns mp3. Up to 3000 chars.… | $0.018 | — | 18 | 2 | Live | ||
x402.twit.sh Real-time Twitter/X data for AI agents. No sign-up, no API keys. Pay per request in USDC on Base via x402. Fully autonomous. | $0.010 | — | 18 | 4 | Live | ||
| $0.0045 | — | 17 | 5 | Live | |||
402oracle.com 402oracle: machine-payable verification. Business identity, price confirmation, URL freshness, claim adjudication. ES256-signed attestations, paid per call in USDC via x402. No accounts, no API keys. | $0.020 | — | 17 | 7 | Live | ||
aeml-x402.zeabur.app Add-on, air quality for one location: US AQI category and PM2.5 reading from EPA and CAMS official feeds. Descriptive only, never a forecast or advice. No data -> 422 no_charge, not billed. Every reco… | $0.0050 | — | 17 | 2 | Live | ||
aeml-x402.zeabur.app Add-on, calibrated units: normalized_index and pct_to_action so readings compare across stations. When the line has no calibration basis you get 422 with no_charge:true and reason:no-calibrated-for-th… | $0.0050 | — | 17 | 2 | Offline | ||
aeml-x402.zeabur.app Add-on, historical placement: seasonal percentile for the current point, frequency, the percentile table, and the method and source used to compute them. Descriptive only, never a forecast or advice.… | $0.0050 | — | 17 | 2 | Live | ||
aeml-x402.zeabur.app Official-source facts for AI agents, each with a record_hash you can recompute offline - you never have to trust this server. 64 paid endpoints from $0.005, x402 (USDC on Base or Solana), no API key a… | $0.0050 | — | 17 | 2 | Live | ||
aeml-x402.zeabur.app Add-on, statistical strata: share of the last 5 years spent in each official band for this day-of-year, the percentile bands, and where the current reading falls. Backtestable, and stated as approxima… | $0.0050 | — | 17 | 2 | Live | ||
aeml-x402.zeabur.app [BATCH+PROOF] Full MCP ecosystem census (21,236 servers, latest day): status, lifecycle, missing_streak, record_hash. DEGRADED DELIVERY, see unavailable_fields - prominence, maturity, github_stars and… | $0.090 | — | 17 | 2 | Live | ||
aeml-x402.zeabur.app [BATCH+PROOF] MCP server graveyard - servers that vanished from the census. THRESHOLD stated plainly: listed on FIRST confirmed absence (confirm_absences=1), not multi-day confirmation; only two snaps… | $0.090 | — | 17 | 2 | Live | ||
aeml-x402.zeabur.app Proposer feed for prediction-market settlement: SEC EDGAR official facts mapped to a machine-friendly answer / timestamp / evidence shape for automated proposal and dispute flows. Three separated time… | $0.010 | — | 17 | 2 | Live | ||
aeml-x402.zeabur.app [BATCH+PROOF] Full stablecoin census, latest day, ranked by market cap; lifecycle flags terminated and depegged. Add ?verifiable=1 and every row carries _hash_core so you can recompute the hash offlin… | $0.090 | — | 17 | 2 | Offline | ||
aeml-x402.zeabur.app [BATCH+PROOF] Stablecoin death samples - a neutral record: the full pre-mortem snapshot of terminated stablecoins (price, supply, collateral, redemption) plus lifecycle context (termination type, conf… | $0.090 | — | 17 | 2 | Live | ||
agent402.tools Live currency conversion using European Central Bank reference rates. Converts an amount between two currencies and returns the rate and date. | $0.0020 | — | 17 | 5 | Live | ||
agent402.tools 101 skill packs that do a whole agent job in one x402 payment - research a stock, audit a domain | $0.0050 | — | 17 | 6 | Live | ||
agents.x402stock.xyz Market and economic data for AI agents - US stocks, ETFs and options, forex, crypto and on-chain perps, energy commodities (crude, natural gas, gasoline), US and global macro (Fed funds, CPI/PCE, jobs… | $0.020 | — | 17 | 1 | Live | ||
agentsvc.io Email verification: checks whether an email address really exists by asking its mail server (SMTP RCPT TO probe; no email is sent), on top of syntax, MX, disposable and role checks. Returns status del… | $0.0025 | — | 17 | 4 | Live | ||
agentsvc.io Public and bank holidays for 200+ countries and their regions (states, cantons) for any year, with local names. Optionally check whether a given date is a holiday. Params: country (ISO 3166-1 alpha-2,… | $0.0030 | — | 17 | 5 | Live | ||
agentsvc.io Render a URL or raw HTML string to PDF. Returns pdf_base64 (base64 PDF; decode to get raw bytes) and page_count. Provide url OR html, never both. Supports format (A4/Letter/Legal), landscape boolean,… | $0.0045 | — | 17 | 4 | Live | ||
agentsvc.io Instant buy-or-avoid verdict for a token, with a shareable result page and preview card (share_url): send a contract address (Base, Ethereum, BSC, Arbitrum, Polygon, Avalanche, Optimism) or a Solana m… | $0.0090 | — | 17 | 6 | Live | ||
Block InspectorData amanchain-relay.gitajhd.workers.devBlock inspector — full block detail by height: hash, miner, timestamp and the complete transaction list. Deterministic on-chain execution by the AmanChain node — live consensus state, real blocks, poo… | $0.0037 | — | 17 | 1 | Live | ||
amanchain-relay.gitajhd.workers.dev Bitcoin price in USD, live — real-time crypto prices for BTC, ETH, SOL, BNB, LTC and AMAN with 24h change and multi-source aggregation; spot price feed API for bitcoin and crypto markets, no API key.… | $0.0050 | — | 17 | 1 | 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. 255,392 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.