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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.

protocol All A2A only Paid APIs Domain verified ✓ Has on-chain inflow
category All Data 320 AI 122 Finance 83 Verification 55 Blockchain 54 Other 21 Content 17 Search 14 Web 12 Compute 12 Infrastructure 10 Inference 9
sort Quality Revenue (30d) Recently updated Name
Showing 1693–1728 of 1,904
Why this order?
Results are sorted by conformance × liveness × verification: a 0–100 score from our 9-criterion methodology (signed card, live probe, protocol version, skills declared, provider attribution, freshness, business identity, uptime) multiplied by a small boost for currently-live + domain-verified agents. Machine-readable schema: conformance.json. No paid placement, no editorial weights.
gas.apitoll.cloud 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…

paid API x402
$0.23 · 30d 225 tx
stablestudio.dev stablestudio.dev

Pay-per-generation AI image and video creation — Nano Banana, GPT Image, Grok, Flux, Sora, Veo, Seedance, and Wan.

paid API ai x402
$135.31 · 30d 567 tx
tick.hugen.tokyo 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…

paid API finance x402
$26.74 · 30d 2,334 tx
google-trends.use.x402atlas.com 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.

paid API data x402
$36.65 · 30d 981 tx
chat.gedx402.com 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…

paid API x402
$3.68 · 30d 298 tx
api.printmoneylab.com 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.

paid API data x402
$6.56 · 30d 666 tx
vaaya.ai 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…

paid API ai x402
$11.38 · 30d 302 tx
edgar.apitoll.cloud 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…

paid API finance x402
$0.26 · 30d 87 tx
glim.sh 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.

paid API data x402
$2.45 · 30d 496 tx
weather.payapi.market 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.

paid API data x402
$0.34 · 30d 101 tx
kronossignals.com 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…

paid API data x402
$6.63 · 30d 535 tx
api.bitrefill.com 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 …

paid API finance x402
$178669.76 · 30d 1,480 tx
laso.finance 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…

paid API x402
$11476.42 · 30d 356 tx
x402.twit.sh 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.

paid API data x402
$345.15 · 30d 57,137 tx
crypto.apitoll.cloud 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,…

paid API x402
$0.35 · 30d 349 tx
vibesprings.net 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,…

paid API data x402
$5.50 · 30d 198 tx
cheaptokens.ai 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…

paid API x402
$417.10 · 30d 87 tx
jokes-endpoint.vercel.app jokes-endpoint.vercel.app

Returns a random interesting joke.

paid API x402
$1.46 · 30d 146 tx
roastx402endpoint.vercel.app roastx402endpoint.vercel.app

Pay for a lighthearted developer roast generated on-demand.

paid API x402
$0.39 · 30d 230 tx
weight402endpoint.vercel.app weight402endpoint.vercel.app

Convert a weight/mass value between units (kg, g, lb, oz, stone, tonne, and more).

paid API x402
$0.59 · 30d 235 tx
402timezones.vercel.app 402timezones.vercel.app

Convert a time between any two IANA time zones (DST-aware). Pay-per-call in USDC on Base.

paid API x402
$0.24 · 30d 241 tx
api.loyalspark.online 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.

paid API blockchain x402
$84.51 · 30d 12,313 tx
ladyfortunalx402.vercel.app ladyfortunalx402.vercel.app

Get a random fortune via x402 payment on Base mainnet.

paid API x402
$0.08 · 30d 78 tx
horrorstoryapi.vercel.app horrorstoryapi.vercel.app

Access the exclusive horror story collection (pay-per-read).

paid API x402
$0.13 · 30d 97 tx
x402wordoftheday.vercel.app x402wordoftheday.vercel.app

Get today's curated Word of the Day (definition + part of speech).

paid API x402
$0.12 · 30d 79 tx
x402lifeadvice.vercel.app x402lifeadvice.vercel.app

Get one piece of thoughtful life advice, paid per request over x402.

paid API x402
$0.05 · 30d 46 tx
x402uselessfacts.vercel.app x402uselessfacts.vercel.app

Pay a tiny amount of USDC and receive one delightfully useless fact.

paid API x402
$0.07 · 30d 70 tx
dicex402.vercel.app dicex402.vercel.app

Roll a dice with any number of faces. Specify faces via ?faces=N query parameter.

paid API x402
$0.04 · 30d 39 tx
riddlex402.vercel.app riddlex402.vercel.app

Pay a micro-fee in USDC on Base mainnet to receive a riddle and its answer.

paid API x402
$0.18 · 30d 89 tx
memegeneratorx402.vercel.app memegeneratorx402.vercel.app

Generate a captioned meme image. Pay per request in USDC on Base mainnet.

paid API x402
$0.10 · 30d 95 tx
randomfactsx402.vercel.app randomfactsx402.vercel.app

Returns a single random fact as JSON in exchange for a micropayment.

paid API x402
$0.23 · 30d 227 tx
coinflip402.vercel.app coinflip402.vercel.app

Flip a coin for a small USDC payment on Base mainnet. Returns heads or tails.

paid API x402
$0.10 · 30d 104 tx
stableenrich.dev 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.

paid API data x402
$744.07 · 30d 27,657 tx
api.onesource.io 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.

paid API blockchain x402
$103.64 · 30d 33,523 tx
StableEmail stableemail.dev

Send/receive email + custom domains + inboxes

paid API social x402
$12.13 · 30d 310 tx
dTelecom STT x402stt.dtelecom.org

Real-time speech-to-text

paid API media x402
$7854.00 · 30d 3,885 tx