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?
imagcon.app
Resize any image to exact dimensions or social-media presets — Open Graph (1200x630), Twitter card, YouTube thumbnail, Instagram, LinkedIn. Smart fit modes avoid distortion: cover (focal-point crop), contain (padded), blur-fill letterbox, s…
geodns.iwsolutions.ca
Resolve DNS hostnames from specific countries. See what IP addresses a domain returns from the perspective of 14 different countries. Detects CDN routing, geo-blocking, and regional DNS differences.
x402.glassnode.com
Market Value to Realized Value Ratio (MVRV) — Market Value to Realized Value (MVRV) is the ratio between market cap and realized cap. Data by Glassnode.
data.greeneris.io
Legal entity reference data from the GLEIF LEI golden copy (updated daily, CC0). Direct lookup: ?lei=529900FCMZ4LKXFD0R69. Search: ?name=airbus&country=FR&limit=5. Each result: lei, legal_name, entity_status, registration_status (ISSUED/LAP…
image.gedx402.com
Fast text-to-image with Flux 1 Schnell (@cf/black-forest-labs/flux-1-schnell). POST prompt and optional dimensions; returns base64 image output. Hero: GET /heroes/flux-schnell. Per-generation x402 pricing per USDC per request (see npm run p…
racingpulse.theaslangroupllc.com
Real-time guaranteed-profit racing arbitrage across all bookmakers. For betting and arbitrage agents.
api.kakerapetit.dev
EDINET filing calendar: annual securities reports (yukashoken hokokusho) filed by Japanese listed companies in a date range. Returns company code, EDINET document ID, fiscal period, accounting standard (JGAAP/IFRS/USGAAP) and the exact fili…
statepulse-api.hahavoid0.workers.dev
Pay-per-call x402 API for AI agents to find and use narrow real-time endpoints: bank and public holidays, DNS propagation, radio stream URLs, barcode lookup, live airspace tracking, air quality, transit status, weather anomalies, brand asse…
oracle.the-undesirables.com
AI-powered TCG card grading, conformal risk forecasting, and market intelligence. 446K+ products across 25+ games. 31 API endpoints. Pay-per-call via x402 USDC on Base. Hosted MCP endpoint: https://mcp.the-undesirables.com
stablejobs.dev
Preview jobs by filters (step 1). Call before job-collect. Page 1–5, 20/page, $0.10/page. Returns id, title, location, company_name, created, _score; pagination; next.collect when results exist. No description, salary, or URLs — use job-col…
x402-endpoints.onrender.com
Paid x402 API tools for AI agents (USDC on Base). Official EU/global registries (GLEIF LEI, VIES VAT, Companies House, INSEE, EUR-Lex, ECB, BODACC, CVE, FDA), crypto pre-trade safety (Solana token rug/honeypot checks, perp derivatives, DEX/…
bazaar-gateway.vercel.app
Zero-transform web page intelligence for AI agents. Extracts OpenGraph + Twitter Card + Article metadata + JSON-LD structured data. Generates AI analysis via Claude Haiku tool_use: summary (one_line/three_lines/key_points), entities (orgs/p…
browser.gedx402.com
Firecrawl v2 API proxy — interact/create. JSON body matches https://docs.firecrawl.dev/api-reference/v2-introduction. Poll GET routes are free; POST/PUT/DELETE are x402. $0.162 USDC per request. Agent search: browser interact, steerable ses…
chain-analyzer.com
Cheap connectivity-check endpoint. Verifies the full x402 settlement path (signature -> CDP facilitator -> on-chain transferWithAuthorization) for $0.01 so AI agents can validate wallet + network + facilitator wiring before committing to hi…
http-status-checker.underscoredone.com
Give this API a list of up to 10 web addresses and it will visit each one to tell you whether it is working, broken, or redirecting visitors somewhere else. You get back the exact status number (like 200 for OK, 404 for not found, 500 for s…
domain-age-checker.underscoredone.com
Send a list of domain names and this tool tells you exactly how old each one is, when it was first registered, when it expires, and how much time is left before expiration. Great for spotting brand-new suspicious domains, researching compet…
gateway.stride20k.com
Current x402 ecosystem composition: services per category (Agentic.Market taxonomy: Data, Inference, Search, Infra, Media, Social, Trading, Travel...), each with catalog share and 7-day delta, from our collector's latest observation run (~3…
jmt-x402-proxy.jmthomasofficial.workers.dev
Raw RDAP registration record for a domain, returned as structured JSON.
keyronne.com
Resolve DNS records over DNS-over-HTTPS: A, AAAA, MX, TXT, NS, CNAME, SOA, CAA, SRV, PTR and more. Returns parsed answers with TTLs and the response status. Built for agents checking mail routing, domain config, or propagation. POST a JSON …
stablestudio.io
Get a client token for direct upload to Vercel Blob
port-scanner.underscoredone.com
Give this API a hostname or IP address and it will try connecting to each port in your requested range. For every port that answers, it tells you whether it is open or blocked, which service is likely running there (like a web server or SSH…
api.robotsshop.io
Independent quality layer for x402 agent-payments: liveness, protocol correctness, spam, payTo integrity, longitudinal reliability.
waterpulse.theaslangroupllc.com
Global water intelligence API. Covers US groundwater levels (USGS 10,000+ monitoring wells), streamflow at gauge stations, drought status (US Drought Monitor D0-D4), water quality (EPA WQP — nitrates, lead, arsenic, PFAS, bacteria), aquifer…
toolsmith-api.dassad10.workers.dev
Current gas price and latest block for Base or Ethereum mainnet, straight from public RPC. Fresh within 15 seconds. JSON response. $0.002 USDC per call, pay via x402, no API key.
dns-whois-lookup.underscoredone.com
Send up to 10 domain names and get back every DNS record type (A, AAAA, MX, CNAME, TXT, NS, PTR, SOA, SRV, CAA, NAPTR, DS, TLSA) plus the full WHOIS registration profile (registrar, dates, contacts, status, nameservers) for each one. URLs a…
qr-code-generator.underscoredone.com
Send a list of texts — website addresses, phone numbers, plain words, WiFi details, anything — and get back a ready-to-use QR code image for each one. Every QR code comes as a base64-encoded PNG you can drop straight into a webpage or save …
api.svgsmith.dev
Convert a raster image (PNG, JPEG, or WebP) into clean, editable, self-verified SVG vector art. Pay per conversion in USDC on Base via x402 - no API key, no subscription. Send JSON with imageBase64 or imageUrl; tune with mode (auto/binary/c…
brasil-dados-api.onrender.com
Full company dossier for a Brazilian CNPJ: legal name, registration status, shareholders/partners (QSA), main and secondary business activities (CNAE), share capital, address — plus an automatic sanctions screen against the CEIS debarment l…
trader.rigoblock.com
AI-powered DeFi trading agent for Rigoblock smart vaults. Natural language to safe swap/bridge calldata or delegated execution. Supports Uniswap, 0x, GMX perpetuals, Across bridging, Uniswap v4 LP, GRG staking, and pool deployment across 7 …
sitemap-url-extractor.underscoredone.com
Give this API a link to any website's sitemap.xml file and it will fetch and parse it, returning every URL found inside. If the sitemap links to other sitemaps (called sitemap indexes), it will follow and extract those too. Each URL is retu…
x402-hono-api.inraby.workers.dev
Audit domain SSL/TLS certificate expiry, HTTPS reachability, HSTS, and HTTP-to-HTTPS redirect posture using certificate transparency and live transport checks.
stablecoinpulse.theaslangroupllc.com
Real-time stablecoin market intelligence API. Synthesizes live data from DeFiLlama, CoinGecko, the Federal Register, and Tavily into structured, actionable intelligence covering GENIUS Act compliance, yield comparison, peg stability, cross-…
clinicalintelpulse.theaslangroupllc.com
Is my medication recalled? Checks the FDA enforcement databases (drug AND food — infant formula and supplements are filed under food) for active and past recalls, explains the recall class (I/II/III) in plain language, and lays out what to …
onchainpulse.theaslangroupllc.com
Intelligence API for the onchain financial transition. Decodes legislation, tracks real world asset tokenization in depth (yield comparison, issuer/redemption risk, tokenized gold), models sector impact scenarios, guides onchain integration…
x402-mcp.onrender.com
Pay-per-call US multi-city property compliance agent. Discovers 14 open-data jurisdictions via free catalog https://x402-mcp.onrender.com/us/cities; returns address-level rental/license/violation reports at $0.01 USDC on Base (eip155:8453) …
api.vaults.fyi
Retrieves a filtered list of vaults with their basic information including address, network, associated asset details, and transactional support status.