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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 1621–1656 of 1,919
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.
stablestudio.io stablestudio.io

Get a client token for direct upload to Vercel Blob

paid API x402
$135.31 · 30d 567 tx
makespdf.com makespdf.com

Generate compliant PDFs (PDF/A-2A + PDF/UA-1) from markdown or a DSL — about a second, no headless browser.

paid API content x402
$0.07 · 30d 6 tx
jmt-x402-proxy.jmthomasofficial.workers.dev jmt-x402-proxy.jmthomasofficial.workers.dev

Raw RDAP registration record for a domain, returned as structured JSON.

paid API x402
$0.02 · 30d 3 tx
gateway.stride20k.com 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…

paid API x402
$0.41 · 30d 20 tx
http-status-checker.underscoredone.com 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…

paid API x402
$30.68 · 30d 57 tx
embed.gedx402.com embed.gedx402.com

Cloudflare Workers AI hub with x402 v2 USDC. Hero integrator funnel: scrape-lite, open-answer, cited-research-pack. https://gedx402.com/docs/integrator-quickstart

paid API ai x402
$3.68 · 30d 298 tx
sat.ipintel.ai sat.ipintel.ai

Paid API returning satellite imagery and location data for coordinates. Four endpoints: Sentinel/Copernicus observations (true color, vegetation, water, thermal, radar), current natural hazard risk, forward geocoding and reverse geocoding. …

paid API data x402
$0.04 · 30d 10 tx
domain-age-checker.underscoredone.com 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…

paid API x402
$30.68 · 30d 57 tx
chain-analyzer.com 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…

paid API x402
$0.02 · 30d 2 tx
defillama.use.x402atlas.com defillama.use.x402atlas.com

Pay-per-call proxy over DefiLlama public data: DeFi TVL, yield pool APY, token prices, DEX and fee volumes, stablecoin supply. 30 endpoints at $0.005 per call in USDC on Base. Operated by x402 Atlas, not affiliated with DefiLlama.

paid API finance x402
$0.05 · 30d 10 tx
dns-whois-lookup.underscoredone.com 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…

paid API x402
$30.68 · 30d 57 tx
hyperliquid.use.x402atlas.com hyperliquid.use.x402atlas.com

Pay-per-call REST API serving Hyperliquid market data on Base: spot and perp context, mid prices, order book, OHLCV candles, funding and predicted funding, open-interest caps and perp metadata. Nine endpoints, $0.005 to $0.01 per call. Oper…

paid API finance x402
$0.07 · 30d 9 tx
toolsmith-api.dassad10.workers.dev 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.

paid API x402
$0.01 · 30d 4 tx
qr-code-generator.underscoredone.com 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 …

paid API x402
$30.68 · 30d 57 tx
api.svgsmith.dev 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…

paid API x402
$0.32 · 30d 16 tx
brasil-dados-api.onrender.com 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…

paid API x402
$0.21 · 30d 37 tx
api.qonoro.ai api.qonoro.ai

Qonoro is an x402-native intelligence API for autonomous agents: structured, source-cited B2B intelligence and data enrichment, callable 24/7 with pay-per-call USDC on Base. Endpoints cover company enrichment, research & discovery, competit…

paid API data x402
$3.40 · 30d 73 tx
sitemap-url-extractor.underscoredone.com 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…

paid API x402
$30.68 · 30d 57 tx
unwrap.use.x402atlas.com unwrap.use.x402atlas.com

Single GET endpoint that follows an HTTP redirect chain using HEAD requests only, returning every hop (URL and status), the final URL, a redirect count and advisory warnings such as redirect loops or https to http downgrades. JSON output. O…

paid API data x402
$0.01 · 30d 1 tx
hyperliquid-predict.use.x402atlas.com hyperliquid-predict.use.x402atlas.com

Relays Hyperliquid HIP-4 prediction market data over x402: a catalog of outcomes with their metadata, and the settled result for a single outcome by id. Upstream payloads are relayed verbatim. Operated by x402 Atlas, not by Hyperliquid.

paid API finance x402
$0.02 · 30d 4 tx
trader.rigoblock.com 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 …

paid API x402
$0.07 · 30d 31 tx
api.vaults.fyi api.vaults.fyi

Retrieves a filtered list of vaults with their basic information including address, network, associated asset details, and transactional support status.

paid API x402
$0.02 · 30d 12 tx
stablefinance.dev stablefinance.dev

Pay-per-request API for US equities data: prices, financial statements, SEC filings, 13F holdings, insider trades and central bank rates. Wraps the Financial Datasets AI API at $0.02 per successful call, no upstream account needed.

paid API finance x402
$2.38 · 30d 119 tx
orcpin.dev orcpin.dev

Trade-lot holding-period and realized-gain calculator for trading agents: per-lot days held, the exact date each lot's gain character turns long-term, and FIFO / specific-identification allocation of a proposed sell with realized gain per l…

paid API x402
$0.55 · 30d 25 tx
space.bip-rep.com space.bip-rep.com

Dedicated satellite tracking API for agents: list CelesTrak TLE catalog groups (ISS, weather, Starlink, and more) and predict the next visible pass over an observer latitude/longitude using NORAD catalog IDs. Outbound CelesTrak fetch only; …

paid API x402
$1.06 · 30d 48 tx
trabotpro.it trabotpro.it

Hero SKU: Pearl Research L1 telemetry (pearld RPC, community nodes, poll history). Free trial: GET /api/a2a/pearl/status

paid API x402
$2.48 · 30d 7 tx
places.use.x402atlas.com places.use.x402atlas.com

Pay-per-call API for local business and place lookups, with separate endpoints backed by Google Maps, Apple Maps and DuckDuckGo Maps data, returning ratings, reviews, address, phone, website and opening hours as JSON.

paid API data x402
$0.12 · 30d 6 tx
hl-tool.darren-pi.workers.dev hl-tool.darren-pi.workers.dev

Full Hyperliquid funding extremes (carry-cost leaderboard)

paid API x402
$0.01 · 30d 3 tx
quokkapix.com quokkapix.com

QuokkaPix official browser-agent batch/scenario unlock. Images stay local in the user's browser.

paid API x402
$0.02 · 30d 2 tx
palmyr.ai palmyr.ai

Create an end-to-end encrypted email inbox keyed to your Solana wallet. Defaults to {name}@palmyr.ai; pass `domain` to provision on a Namecheap-registered domain you own (auto-sets MX/SPF/DKIM records).

paid API x402
$0.05 · 30d 1 tx
www.stablebrowser.dev www.stablebrowser.dev

Remote browser sessions for AI agents, priced at 0.10 USDC on Base per session. Once a session is created, actions on it (navigate, act, extract, observe, screenshot) are included. Built on Browserbase and Stagehand.

paid API ai x402
$8.20 · 30d 82 tx
safetyincidents.org safetyincidents.org

Federal OSHA severe-injury records, single incident lookups, and employer aggregate safety totals. Cleaned and entity-resolved. Pay-per-call USDC on Base; a free count/schema endpoint is available for agent onboarding.

paid API data x402
$1.05 · 30d 5 tx
cdp-agent-0-01.onrender.com cdp-agent-0-01.onrender.com

AgentWire service card for webhook inbox relay and web fetch infrastructure.

paid API x402
$0.01 · 30d 5 tx
straits.live straits.live

Real-time Strait of Hormuz crisis data for AI agents: full vessel manifest with OFAC sanctions cross-reference, full-resolution transit and index history, one-call situation snapshot, and the complete daily brief. $0.01-$0.02 per request in…

paid API data x402
$0.03 · 30d 2 tx
deepseek.x402.press deepseek.x402.press

DeepSeek AI inference — pay in USDC/EURC on Base or USDC on Arbitrum

paid API x402
$5.89 · 30d 328 tx
pro-api.coinmarketcap.com pro-api.coinmarketcap.com

Pay-per-call cryptocurrency market data (quotes, listings, metadata) via x402 micropayments.

paid API data x402
$1.24 · 30d 124 tx