Agent directory
Every A2A agent + paid API we've discovered, live-probed, and ranked. Filter to domain-verified agents, the subset with observed on-chain inflow, or one of the 12 category buckets.
Why this order?
gas.apitoll.cloud
Base gas oracle / gas price API for AI agents and bots — get the gas price for a transaction on Base in one x402 call. Real-time slow/standard/fast EIP-1559 fee tiers from a live eth_feeHistory call, returned as DROP-IN maxFeePerGas + maxPr…
stablestudio.dev
Pay-per-generation AI image and video creation — Nano Banana, GPT Image, Grok, Flux, Sora, Veo, Seedance, and Wan.
tick.hugen.tokyo
Best bid/ask FX aggregated from multiple sources across 14 instruments (major pairs and XAUUSD), with quality metadata: number of fresh sources, quality status and spread comparison against the single source. Paid per call in USDC on Base o…
google-trends.use.x402atlas.com
Pay-per-call API over Google Trends data: interest over time for a keyword, interest by region within a country, related topics and queries. Returns JSON, built for keyword research and search demand analysis.
chat.gedx402.com
Chat completion with Llama 4 Scout 17B 16e Instruct on Cloudflare Workers AI (@cf/meta/llama-4-scout-17b-16e-instruct). POST JSON messages[] (system/user/assistant) and optional max_tokens; pay USDC per request with dynamic neuron-based pri…
api.printmoneylab.com
Korean crypto market data for AI agents: Upbit and Bithumb prices, kimchi premium, USD/KRW rate, arbitrage scanning across 189+ tokens, and AI sentiment built from Korean news. Pay per request via x402 on Base, Polygon or Solana.
vaaya.ai
The agent payment system: one MCP server that lets any agent call paid APIs — image/video gen, product demos, web search & scraping, deep/market research, lead enrichment, GTM, sandboxes, browser automation, email — pay-per-call, no API key…
edgar.apitoll.cloud
SEC EDGAR data by ticker or CIK: 10-K, 10-Q and 8-K filings, Form 4 insider trades, and a bundle combining insider, 13F holdings and recent 8-K in one call. Sources live from data.sec.gov. A free coverage route reports which forms exist bef…
glim.sh
Pay-per-call API returning live data from Twitter, Reddit, the web, GitHub, Amazon, YouTube and Telegram, plus a chat completions compatible inference endpoint.
weather.payapi.market
Weather API returning current conditions, forecasts up to 16 days, historical data and air quality for any location worldwide, backed by Open-Meteo data, at $0.001 per call in USDC on Base.
kronossignals.com
Pay-per-call real-time crypto market-data API for autonomous agents and trading bots. Covers 16 assets with derivatives intelligence (funding rates, open interest, basis), liquidation cluster maps, options implied volatility, multi-source s…
api.bitrefill.com
API to search gift cards, eSIMs and mobile top ups and pay for them in USDC via x402, priced per call and with no account. Endpoints cover catalog search, product detail, and invoice creation, payment and status, on Base, Arbitrum, Polygon …
laso.finance
Send a payment via Venmo or PayPal. Requires KYC verification on the calling wallet; if not yet verified the response returns a kyc_url instead of sending the payout. The on-chain x402 payment credits the user's account balance via the stan…
x402.twit.sh
Paid API for X/Twitter data: tweet search, user profiles, followers, lists and communities returned as X v2 compatible JSON, plus write endpoints such as posting and interactions. Paid per single request in USDC on Base via x402.
crypto.apitoll.cloud
Stablecoin market data ranked by USD-equivalent circulating supply: each coin returns its symbol, peg type and mechanism (fiat-backed, crypto-backed, algorithmic), peg currency (USD, EUR, JPY…), current peg price, native circulating supply,…
vibesprings.net
Pay-per-call data API serving many endpoints on one host: weather and forecasts, earthquakes, flood and marine conditions, fiat exchange rates and conversion, on-chain address risk, plus alert and invoice workflows. No accounts or API keys,…
cheaptokens.ai
OpenAI-compatible LLM inference and chat completions via discounted Venice API credits. Pay USDC to receive a live Venice.ai API key for /api/v1 models, chat, images, audio, video, and embeddings. Same-Day credits are 30–90% below Venice di…
jokes-endpoint.vercel.app
Returns a random interesting joke.
roastx402endpoint.vercel.app
Pay for a lighthearted developer roast generated on-demand.
weight402endpoint.vercel.app
Convert a weight/mass value between units (kg, g, lb, oz, stone, tonne, and more).
402timezones.vercel.app
Convert a time between any two IANA time zones (DST-aware). Pay-per-call in USDC on Base.
api.loyalspark.online
Paid API for onchain loyalty programs on Base: loyalty token deployment, minting to customer wallets, rewards catalog, vouchers and P2P exchange, usable by agents over REST or MCP.
ladyfortunalx402.vercel.app
Get a random fortune via x402 payment on Base mainnet.
horrorstoryapi.vercel.app
Access the exclusive horror story collection (pay-per-read).
x402wordoftheday.vercel.app
Get today's curated Word of the Day (definition + part of speech).
x402lifeadvice.vercel.app
Get one piece of thoughtful life advice, paid per request over x402.
x402uselessfacts.vercel.app
Pay a tiny amount of USDC and receive one delightfully useless fact.
dicex402.vercel.app
Roll a dice with any number of faces. Specify faces via ?faces=N query parameter.
riddlex402.vercel.app
Pay a micro-fee in USDC on Base mainnet to receive a riddle and its answer.
memegeneratorx402.vercel.app
Generate a captioned meme image. Pay per request in USDC on Base mainnet.
randomfactsx402.vercel.app
Returns a single random fact as JSON in exchange for a micropayment.
coinflip402.vercel.app
Flip a coin for a small USDC payment on Base mainnet. Returns heads or tails.
stableenrich.dev
Pay-per-request access to third party web search and enrichment APIs, including Exa, Firecrawl, Clado, Google Maps, Whitepages, Reddit and PDL, behind a single endpoint with no auth, paid in USDC on Base or Solana.
api.onesource.io
RPC API for Ethereum mainnet and Sepolia, with 25 pay-per-call endpoints (blocks, balances, transactions, receipts, event logs, ENS, contracts, NFTs) payable in USDC on Base via x402, with no API key.
stableemail.dev
Send/receive email + custom domains + inboxes
x402stt.dtelecom.org
Real-time speech-to-text