AI agent tool directory: x402 pay-per-call APIs
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607 x402 pay-per-call APIs of 2,189 tools · updated Oct 18, 2026
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607 results, top 100 shown
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| Score | Tool | Type | Host |
|---|---|---|---|
| 100 | ax1.vc resource Send a Base token contract address, get an AI-written verdict: onchain metrics, a plain-language take, and a s | x402 · $0.02 | www.ax1.vc |
| 100 | api-xpay.com ping Health check ping | x402 · $0.005 | www.api-xpay.com |
| 100 | api-xpay.com payment Payment receipt with transaction details | x402 · $0.005 | www.api-xpay.com |
| 100 | api-xpay.com time Current server time in UTC | x402 · $0.005 | www.api-xpay.com |
| 100 | crypto.apitoll.cloud price Latest crypto token prices by ticker symbol, CoinGecko id, or chain:address (BTC, ETH, SOL, or base:0x…): curr | x402 · $0.001 | crypto.apitoll.cloud |
| 100 | api.exa.ai search Exa /search endpoint | x402 · $0.007 | api.exa.ai |
| 100 | stableenrich.dev people-search FullEnrich People Search — filter by company domain/name/LinkedIn URL, seniority, title, location, skills, and | x402 · $0.15 | stableenrich.dev |
| 100 | stableupload.dev upload Buy an upload slot. Agent uploads file via returned URL. | x402 · $0.005 | stableupload.dev |
| 100 | glim.sh search Search tweets with advanced operators (recommended). Body param is `query` (not q), e.g. {"query":"from:elonmu | x402 · $0.005 | glim.sh |
| 100 | agi.apify.com prepaid-tokens Apify is the largest and most trusted marketplace of tools for web scraping, crawling, data extraction, and au | x402 · $1 | agi.apify.com |
| 100 | laso.finance get-card Get a prepaid card for use inside the United States | x402 · $5 | laso.finance |
| 100 | api.onesource.io erc20-balance ERC20 token balance for any Ethereum wallet - USDC, USDT, DAI, or any token - via balanceOf (eth_call) on OneS | x402 · $0.003 | api.onesource.io |
| 100 | api.onesource.io block-number Latest Ethereum block height - current chain tip via eth_blockNumber | x402 · $0.001 | api.onesource.io |
| 100 | x402.botsmith.dev search X Tweet Search ($0.02/call): Search X (Twitter) posts with full advanced-search syntax (from:, since:, until:, | x402 · $0.02 | x402.botsmith.dev |
| 100 | laso.finance auth Get a Firebase ID token for authenticating with the callable APIs | x402 · $0.001 | laso.finance |
| 100 | edgar.apitoll.cloud filings Latest SEC EDGAR filings for any US-listed company by stock ticker or CIK: 10-K annual reports, 10-Q quarterly | x402 · $0.003 | edgar.apitoll.cloud |
| 100 | cheaptokens.ai buy OpenAI-compatible LLM inference and chat completions via discounted Venice API credits. Pay USDC to receive a | x402 · $1 | cheaptokens.ai |
| 100 | api.onesource.io live-balance Live wallet balance - native ETH plus up to 20 caller-supplied ERC20 tokens in one bounded RPC batch | x402 · $0.003 | api.onesource.io |
| 100 | api.402rates.com ping Payment integration check for 0.001 USDC; no external data lookup. Returns time, rail, network mode and free/p | x402 · $0.001 | api.402rates.com |
| 100 | stableenrich.dev search Exa Search - Neural search across the web | x402 · $0.01 | stableenrich.dev |
| 100 | hypernatt.com liq-radar Forced-order map. If cluster_grammar is present, read it before liq_radar. class=noise (<3%) is high-leverage | x402 · $0.001 | hypernatt.com |
| 100 | keyring-agent.blockchhub.link send-native Pay the send-native execution fee (native coin transfer) | x402 · $0.05 | keyring-agent.blockchhub.link |
| 100 | rubric-protocol.com exchange-rate Attested Hedera network facts: HBAR exchange rate, gas fees, supply, node roster, throughput, topic state. Eac | x402 · $0.001 | rubric-protocol.com |
| 100 | ausca.com open-inbox Start one renewable random receive-only temporary email address, then wait for and read bounded inbound mail. | x402 · $0.05 | ausca.com |
| 100 | api.hyperextend.xyz latest The most-recent N OHLCV candles (≤5000). Same per-row pricing as the windowed read ($0.00001 base for main/spo | x402 · $0.002 | api.hyperextend.xyz |
| 100 | rubric-protocol.com supply Attested Hedera network facts: HBAR exchange rate, gas fees, supply, node roster, throughput, topic state. Eac | x402 · $0.001 | rubric-protocol.com |
| 100 | vibesprings.net btc-usd Real-time BTC/USD price feed oracle. Retrieves live spot rate, 24h high/low, and volume directly from Coinbase | x402 · $0.002 | vibesprings.net |
| 100 | quartermaster.surewhynot.app gas Current Base gas prices and a simple-transfer cost estimate for transaction planning. | x402 · $0.001 | quartermaster.surewhynot.app |
| 100 | api.oblique.markets time Use when an agent needs a trusted UTC timestamp or the smallest end-to-end test of its x402 payment client. Re | x402 · $0.01 | api.oblique.markets |
| 100 | wallets-demo-seller-server.calebgcarithers.workers.dev weather Real-time current weather conditions for a city or location, including temperature, humidity, precipitation, w | x402 · $0.001 | wallets-demo-seller-server.calebgcarithers.workers.dev |
| 100 | api.exa.ai contents Exa /contents endpoint | x402 · $0.001 | api.exa.ai |
| 100 | x402tap.com weather Live current weather conditions for any city, sourced from Open-Meteo | x402 · $0.01 | x402tap.com |
| 100 | ausca.com lease-browser Lease one ordinary remote browser with standard CDP access for 10, 30, or 60 minutes. No automation, proxy, st | x402 · $0.05 | ausca.com |
| 100 | api.chit402.com completions Signed spend receipts for agent x402 payments — who paid which call, verifiable by a third party. Treasury des | x402 · $0.002 | api.chit402.com |
| 100 | ausca.com transcribe-media Speech-to-text for one immutable audio or video artifact, returning normalized text and timed segments for aud | x402 · $0.4 | ausca.com |
| 100 | vibesprings.net base-gas Base network real-time gas price oracle. Returns block base fee, current gas price in GWEI, and network block | x402 · $0.001 | vibesprings.net |
| 100 | api.oblique.markets bazaar-pulse Use when an agent wants one-call situational awareness of the x402 Bazaar before choosing what to buy or sell. | x402 · $0.002 | api.oblique.markets |
| 100 | api.oblique.markets base-block-number Use when an agent needs base block number. Returns Fetch the current Base mainnet block number from redundant | x402 · $0.002 | api.oblique.markets |
| 100 | randomfactsx402.vercel.app random-fact Returns a single random fact as JSON in exchange for a micropayment. | x402 · $0.01 | randomfactsx402.vercel.app |
| 100 | api.nansen.ai current-balance Get Address Current Balance Data | x402 · $0.01 | api.nansen.ai |
| 100 | minifetch.com url-check Cheap robots.txt preflight check before you call the Minifetch /extract and /run/seo-page-audit endpoints: ret | x402 · $0.001 | minifetch.com |
| 100 | sat.ipintel.ai satellite-observe Agent-ready satellite observations for any coordinates. Returns PNG image URLs and scene metadata for true col | x402 · $0.025 | sat.ipintel.ai |
| 100 | api.kadec0.xyz serp Web search results (SERP). Keyless web search returning ranked title, URL, and snippet for a query — with loca | x402 · $0.05 | api.kadec0.xyz |
| 100 | api.bitrefill.com detail Get a product's packages, pricing, and recipient requirements before creating an invoice. | x402 · $0.001 | api.bitrefill.com |
| 100 | horrorstoryapi.vercel.app horror-story Access the exclusive horror story collection (pay-per-read). | x402 · $0.01 | horrorstoryapi.vercel.app |
| 100 | api.nansen.ai who-bought-sold Get "Token God Mode" (TGM) who bought/sold data | x402 · $0.01 | api.nansen.ai |
| 100 | cultos.dev crypto-feed Crypto Signal Feed | x402 · $0.003 | www.cultos.dev |
| 100 | rpc.nodeflare.app x402 Base RPC (chain 8453): JSON-RPC over HTTPS on NodeFlare's own bare-metal nodes. Pay per request in USDC, no ac | x402 · $0.001 | rpc.nodeflare.app |
| 100 | agentpay.tools call Pre-trade risk check for AI agents trading crypto: live orderbook slippage at YOUR size, side-aware funding ca | x402 · $0.01 | agentpay.tools |
| 100 | stableenrich.dev people-enrich PDL Person Enrich — career history, emails, phone. Requires one of: `email`, `profile` (LinkedIn URL), or `fir | x402 · $0.28 | stableenrich.dev |
| 100 | x402.aispace.bot generate Text-to-image generation on Venice models (Flux, SD3.5, GPT-Image, HunyuanImage, and more), paid per request i | x402 · $0.015 | x402.aispace.bot |
| 100 | scvd.store spot_check Spot Check. REQUIRES ?host= on the paid request — a signed request without it is refused before the gate and n | x402 · $0.001 | scvd.store |
| 100 | stableupload.dev site Buy a site upload slot. Upload a zip file, then activate to extract and serve as a static site. | x402 · $0.005 | stableupload.dev |
| 100 | gas.apitoll.cloud gas Base gas oracle / gas price API for AI agents and bots — get the gas price for a transaction on Base in one x4 | x402 · $0.001 | gas.apitoll.cloud |
| 100 | api.kadec0.xyz papers Academic and scientific paper search API. Search research papers and scholarly literature across arXiv, PubMed | x402 · $0.02 | api.kadec0.xyz |
| 100 | keyring-agent.blockchhub.link send-token Pay the send-token execution fee (ERC-20 transfer) | x402 · $0.05 | keyring-agent.blockchhub.link |
| 100 | api.nansen.ai related-wallets Get Address Related Wallets Data | x402 · $0.01 | api.nansen.ai |
| 100 | kronossignals.com funding-extremes Crypto funding-rate extremes screener: scans all 17 perpetual futures markets (BTC/ETH/SOL/BNB/XRP/DOGE/ADA/AV | x402 · $0.02 | kronossignals.com |
| 100 | rubric-protocol.com rubric-assert Unforgeable operating history for any AI agent attesting through TenPrint: record count, first-seen date, cont | x402 · $0.005 | rubric-protocol.com |
| 100 | x402uselessfacts.vercel.app useless-fact Pay a tiny amount of USDC and receive one delightfully useless fact. | x402 · $0.001 | x402uselessfacts.vercel.app |
| 100 | contextslim.friczero.com fetch [MCP: fetch_result] Targeted JSONPath extraction (query param mode) from cached context reference. | x402 · $0.001 | contextslim.friczero.com |
| 100 | ladyfortunalx402.vercel.app fortune Get a random fortune via x402 payment on Base mainnet. | x402 · $0.01 | ladyfortunalx402.vercel.app |
| 100 | api.loyalspark.online rewards Onchain loyalty platform on Base Network. Businesses launch branded rewards in minutes, customers earn real va | x402 · $0.001 | api.loyalspark.online |
| 100 | api.loyalspark.online reward-status Onchain loyalty platform on Base Network. Businesses launch branded rewards in minutes, customers earn real va | x402 · $0.001 | api.loyalspark.online |
| 100 | x402.sniperx.fun smarttraders_smartmoney Get SmartMoney trading activities on token (sorted by time descending) | x402 · $0.02 | x402.sniperx.fun |
| 100 | coinflip402.vercel.app coinflip Flip a coin for a small USDC payment on Base mainnet. Returns heads or tails. | x402 · $0.001 | coinflip402.vercel.app |
| 100 | 767-2676.com receipt Signed time-bounded witness of an agent-carried payload digest; the payload stays with the agent | x402 · $0.001 | 767-2676.com |
| 100 | x402lifeadvice.vercel.app life-advice Get one piece of thoughtful life advice, paid per request over x402. | x402 · $0.001 | x402lifeadvice.vercel.app |
| 100 | api.kadec0.xyz weather Weather forecast and air quality for any location worldwide. Returns current conditions plus a 16-day daily we | x402 · $0.005 | api.kadec0.xyz |
| 100 | kronossignals.com macro TradFi macro context for crypto traders and agents: VIX (fear gauge), DXY (US Dollar Index), US 10-Year yield, | x402 · $0.02 | kronossignals.com |
| 100 | chat.gedx402.com completions Multi-model chat completions. POST messages[] and set model to any LLM id from GET /v1/models; dynamic USDC pr | x402 · $0.005 | chat.gedx402.com |
| 100 | dicex402.vercel.app dice Roll a dice with any number of faces. Specify faces via ?faces=N query parameter. | x402 · $0.001 | dicex402.vercel.app |
| 100 | api.loyalspark.online balance Onchain loyalty platform on Base Network. Businesses launch branded rewards in minutes, customers earn real va | x402 · $0.001 | api.loyalspark.online |
| 100 | api.printmoneylab.com kr-prices Korean exchange prices (Upbit, Bithumb) for a single token in KRW | x402 · $0.002 | api.printmoneylab.com |
| 100 | api.robinx.io new Live scored launch feed (realtime) — or add ?tier=free for the 10-min-delayed free feed, or ?tier=alpha ($0.02 | x402 · $0.01 | api.robinx.io |
| 100 | search.cyberwarex.com news Ranked news brief for any topic, refreshed every 15 minutes: the most-corroborated recent headlines, each with | x402 · $0.001 | search.cyberwarex.com |
| 100 | lionx402.com wallet-screen-json Cheapest OFAC SDN wallet screen for AI agents ($0.001). AML/KYT pre-pay gate: PASS/WARN/BLOCK before you settl | x402 · $0.001 | lionx402.com |
| 100 | brasil-dados-api.onrender.com cambio Official USD/BRL and EUR/BRL exchange rates (PTAX, Central Bank of Brazil). | x402 · $0.002 | brasil-dados-api.onrender.com |
| 100 | roastx402endpoint.vercel.app roast Pay for a lighthearted developer roast generated on-demand. | x402 · $0.0017 | roastx402endpoint.vercel.app |
| 100 | dripstack.com stock-picks Paid JSON for stock-picker calls (API V2). Bearer API key / JWT / OAuth subscribers (PRO/EXPERT) are served wi | x402 · $3 | dripstack.com |
| 100 | api.justaname.id reverse Resolves an address into its ENS reverse record on a given chain, with batch support up to 50 addresses and pe | x402 · $0.005 | api.justaname.id |
| 100 | api.stocktrends.com latest Current weekly stock analytics for equity research and pre-trade analysis. Returns the latest Stock Trends ind | x402 · $0.0035 | api.stocktrends.com |
| 100 | app.suedeai.ai image AI image generation from a text prompt. Generate album and single cover art, podcast and video thumbnails, soc | x402 · $0.15 | app.suedeai.ai |
| 100 | cars2026.vercel.app cars Educational briefing on the latest cars in 2026 (powertrains, range, pricing, and what's new). | x402 · $0.0011 | cars2026.vercel.app |
| 100 | api.justaname.id resolve Resolves an ENS name into its addresses, text records, and content hash, with batch support up to 50 names and | x402 · $0.005 | api.justaname.id |
| 100 | crypto.apitoll.cloud sentiment The Crypto Fear & Greed index: the current market-sentiment score (0–100) and its classification (Extreme Fear | x402 · $0.001 | crypto.apitoll.cloud |
| 100 | memegeneratorx402.vercel.app generate-meme Generate a captioned meme image. Pay per request in USDC on Base mainnet. | x402 · $0.001 | memegeneratorx402.vercel.app |
| 100 | x402.problocks.io ping Verify payment connectivity with USDC on Base. Returns a JSON pong and UTC timestamp after settlement. | x402 · $0.001 | x402.problocks.io |
| 100 | kronossignals.com fear-greed Crypto Fear & Greed Index: alternative.me score (0-100) plus Kronos-owned context (BTC funding sentiment, OI 1 | x402 · $0.03 | kronossignals.com |
| 100 | agents.samedaydesk.com extract Extract a public HTTP(S) page into JSON: title, description, JSON-LD, Open Graph, headings, links, and AI-read | x402 · $0.005 | agents.samedaydesk.com |
| 100 | news.apitoll.cloud news Latest crypto news and breaking headlines, real-time from Cointelegraph. Search any topic (bitcoin, ethereum, | x402 · $0.001 | news.apitoll.cloud |
| 100 | x402.aispace.bot queue Async text-to-video and image-to-video generation on Venice (WAN 3.0, Seedance 2.5, HappyHorse, and more), pai | x402 · $0.65 | x402.aispace.bot |
| 100 | theartillerist.com x402-trial Verify that an agent wallet can complete an x402 v2 payment using USDC on Base mainnet before purchasing produ | x402 · $0.001 | theartillerist.com |
| 100 | x402wordoftheday.vercel.app word-of-the-day Get today's curated Word of the Day (definition + part of speech). | x402 · $0.0015 | x402wordoftheday.vercel.app |
| 100 | api.geoprimitives.dev depth Give it a latitude and longitude and it answers with what the nautical chart says about the water there: the d | x402 · $0.005 | api.geoprimitives.dev |
| 100 | stabletravel.dev search Search cached Seats.aero award availability by origin, destination, dates, cabin, carriers, and pagination. | x402 · $0.02 | stabletravel.dev |
| 100 | chrono.schemasure.com business-time Resolve a local time to an exact UTC instant with explicit DST ambiguity handling, business-day arithmetic, pu | x402 · $0.02 | chrono.schemasure.com |
| 100 | 402timezones.vercel.app convert-timezone Convert a time between any two IANA time zones (DST-aware). Pay-per-call in USDC on Base. | x402 · $0.001 | 402timezones.vercel.app |
| 100 | laso.finance order-gift-card Order a gift card from the catalog. Browse available cards at GET /search-gift-cards. | x402 · $5.24 | laso.finance |
| 100 | agentpay.tools call Buyer-side trust oracle for the x402 marketplace: 'I need X, budget $Y — which tool is real?' Sweeps the WHOLE | x402 · $0.01 | agentpay.tools |
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