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?
email-send.api.klymax402.com
Send an email message
ai-agent-hub-backend-odzo.onrender.com
Pay a fraction of a cent to retrieve an ad payload for a given adId
agents.datamancer.io
zero1mind.onrender.com
ssl-checker.api.klymax402.com
Check SSL certificate for a domain
whale-alert.api.klymax402.com
Track large on-chain whale transactions
email-verification.api.klymax402.com
Verify a single email address
sentiment-analyzer.api.klymax402.com
Analyze sentiment of a single text
ai-summarizer.api.klymax402.com
Fetch a URL and summarize its content
web-scraper.api.klymax402.com
Scrape a URL and convert to clean markdown
nft-metadata.api.klymax402.com
Fetch NFT metadata from contract and token ID
weather-api.api.klymax402.com
Get current weather and forecast for a location
address-validator.api.klymax402.com
Parse, validate, and normalize a postal address
zlurp.ai
Web scraping API for AI agents. Convert any URL to clean markdown. Pay per scrape via x402 — no accounts or API keys required.
ip.halowerk.com
monitor.memoryapi.org
x402 API activity stats — top endpoints by paid calls, trend data, and unique payer counts from memoryapi.org nginx logs.
agent.memoryapi.org
Get ERC-8004 registration JSON for memoryapi.org — a complete example of an AI agent registration file with 28 MCP services and x402 support.
api.metalend.tech
Returns MetaLend API services directory with a one-line summary of each RebalancerResource endpoint plus links to API docs.
defi-api.agenticfi.wtf
DeFi APIs for AI agents. 36 pay-per-call endpoints for token data, pricing, wallet analytics, swap routing, and on-chain workflows. Powered by x402 on Base.
second-opinion-production.up.railway.app
Adversarial verification for AI agents: an independent skeptic attempts to refute a claim before the agent acts on it, returning a structured verdict (refuted / supported / inconclusive) with calibrated confidence, findings, citations, and …
x402.whisperbox.my.id
licenses.recordsforagents.com
Search contractor/trade licenses (TX TDLR electricians/A-C, FL DBPR construction) by free-text query, name, state, profession, or status.
socialintel.dev
Instagram influencer discovery API for AI agents. Search influencers by keyword, niche, country, city, demographics, or follower range. Returns profiles with usernames, bios, follower counts, business categories, and verified business email…
econ.memoryapi.org
U.S. Census demographic data by state or county. Population, income, poverty, unemployment, home values, education.
person-enrichment.api.klymax402.com
Enrich a person profile from their email address
api.kgninja.dev
api.creativeforesight.io
company-enrichment.api.klymax402.com
Enrich a company from its domain name (POST variant)
x402-paid-api.x402-finance.workers.dev
sentinel-agent.dev
x402-protected paid API on sentinel-agent.dev (discovered via Coinbase facilitator).
chess402.vercel.app
Masters opening explorer for a position. Returns top moves, win/draw/loss rates, and recent top master games from the Lichess masters database.
telemetry-api-production-5072.up.railway.app
Live post-cost edge observations from an autonomous trading organism on Monad + XRPL: per-pair net edge after gas/slippage/fees, cost-shield verdicts, refreshed every ~90s.
listing-roast-x402-service-production.up.railway.app
Listing Roast Quick Score x402: $0.001 GET marketplace listing score on the indexed /api/listing-roast URL. POST the same URL for the $0.01 full roast.
ip-geo-api-production.up.railway.app
web-scraper-api-production-bf20.up.railway.app
Extract structured elements: heading hierarchy (h1-h6), lists, tables as 2D arrays, and images with alt text, plus element counts.
booaip.vercel.app
Top APY yield pools by token symbol and chain, with risk flags (DefiLlama). Body: { symbol?, chain?, limit?, safeOnly? }.