Skip to content

Agent directory

Every A2A agent + paid API we've discovered, live-probed, and ranked. Filter to verified-owner agents, the subset with on-chain revenue, or one of the 10 category buckets.

protocol All A2A only Paid APIs Verified owner Has on-chain revenue
category All data 32 inference 9 search 7 infra 7 social 5 media 5 travel 2 storage 2 trading 1 other 1
sort Quality Revenue (30d) Recently updated Name
Showing 2413–2448 of 3,791
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 + verified-owner agents. Machine-readable schema: conformance.json. No paid placement, no editorial weights.
storage.gedx402.com storage.gedx402.com

Agent artifact storage on storage.gedx402.com. PUT object bytes (raw or JSON base64), GET bytes, DELETE key; HEAD metadata is free. Pay USDC per mutating request. Bundle: GET /v1/models?bundle=artifacts. Pair with browser extract/persist an…

paid API
vape-x402.vapex402.workers.dev vape-x402.vapex402.workers.dev

VAPE safety_preflight — VAPE's deepest instant verdict: weighted CertiK-style score, meme-factory-template detection, recent-hack correlation, public web-reputation search, a live check of the project's declared socials, and a frontier-LLM …

paid API
api.x402-video.com api.x402-video.com

Seedance 2.0 Fast — 5-second 720p text-to-video (faster, cheaper)

paid API
verifyapi.hillguava.xyz verifyapi.hillguava.xyz

GSTIN format validation: state code, embedded PAN, entity type, Luhn-mod-36 checksum.

paid API
orbisapi.com orbisapi.com

Cryptographically signed crypto, econ indicators, DLCs, FX & market indices — pay-per-query over x402, no API keys | Pay-per-call via Orbis API Marketplace (USDC on Base, x402 protocol). No account or API key required.

paid API offline
scrape402.xyz scrape402.xyz

Crawl a website from a seed URL up to configurable depth and page limits — multi-page crawler returning structured HTML-to-markdown content for AI agents

paid API
api.chartsplat.com api.chartsplat.com

A Chart.js-compatible charting API: POST a standard Chart.js `{ type, data, options }` — the same object you would hand to `new Chart()` — and get back a rendered PNG. Supports bar, line, pie, doughnut, radar, polar area, and candlestick/OH…

paid API
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
paygent.obsmetrics.com paygent.obsmetrics.com

Pre-execution safety oracle for agent actions: submit the tool call you are about to run (shell, http, sql, file, code, env) plus your stated intent, and get a machine-enforceable verdict before you execute it. Decodes what the call does, f…

paid API
x402.servicesmax.xyz x402.servicesmax.xyz

Nouveaux endpoints x402 et variations de volume d'appels depuis le scan précédent (dédoublonné cross-source).

paid API
api.veritylayer.dev api.veritylayer.dev

VerityLayer verifies whether a factual claim is true — fact-check, verify a claim, is this true. Independent, fail-closed verification for AI agents: returns a verdict (supported/unsupported/uncertain), a calibrated 0-1 confidence, reasonin…

paid API
x402-parser-edge-mainnet.epicblubber.workers.dev x402-parser-edge-mainnet.epicblubber.workers.dev

Sub-100ms PDF text extraction, $0.002/doc, born-digital PDFs, no OCR, 10MB cap

paid API
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
aviation.x402.press aviation.x402.press

Premium multi-source aviation intelligence: ask natural-language questions about flights, aviation weather (METAR/TAF), jet streams, and airports. Returns a reasoned answer by synthesising multiple live data sources in parallel.

paid API
blockmachine.io blockmachine.io

Buy a blockmachine API key with Request Unit (RU) credit. blockmachine is decentralized multi-chain RPC infrastructure on Bittensor Subnet 19 - one key authenticates across supported chain RPC endpoints (Bittensor and Ethereum), spending fr…

paid API
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
browser.gedx402.com 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…

paid API
domain-availability-checker.underscoredone.com domain-availability-checker.underscoredone.com

Give this API up to 10 domain names and it will tell you whether each one has a registration record on file with the official registry. It uses RDAP — the modern, structured replacement for WHOIS — so there is no messy free-text parsing. Ea…

paid API
x402-research.up.railway.app x402-research.up.railway.app

On-demand crypto research synthesis powered by Messari AI. Pass query + type (diligence | bullbear | compare | narrative | risk | tweet). Example: /v1/research?query=solana&type=bullbear

paid API
x402.fuchss.app x402.fuchss.app

Trust score (0-100, grade A-F) for any publicly listed x402 endpoint. Unlike uptime-only checkers, we return ECONOMIC PROOF: the REAL on-chain USDC settlement volume and distinct-payer count for the endpoint's payTo address — is anyone actu…

paid API
ged-x402-media.jvalamis.workers.dev ged-x402-media.jvalamis.workers.dev

Transcribe speech to text with Whisper Tiny EN (@cf/openai/whisper-tiny-en). POST audio (base64) or audio URL; returns transcript text billed by audio duration.

paid API
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
mortgage-amortization.underscoredone.com mortgage-amortization.underscoredone.com

Give this API a loan amount, an interest rate, and a repayment term, and it hands back the precise monthly payment plus a complete schedule showing — for every single month — how much goes to interest, how much reduces the balance, and what…

paid API
gateway.hillguava.xyz gateway.hillguava.xyz

7-day weather forecast for an Indian city. 400+ cities supported.

paid API
flashpoint.ai flashpoint.ai

Your agent surveys real people, anywhere. Pay-per-call MCP server backed by Flashpoint.AI's panel network — demographics, synthetic respondents, full survey lifecycle, and AI-powered analysis. Per-call prices are listed in `tools` below; se…

paid API
webtools402.176-109-107-191.sslip.io webtools402.176-109-107-191.sslip.io

Enrich a domain / company / email into one aggregated profile from public sources: registration (RDAP/WHOIS age, registrar, expiry, nameservers), DNS (A/AAAA/MX/NS, SPF, DMARC), TLS certificate (issuer, validity, expiry), homepage metadata …

paid API
judicious-earnest-vaporware.replit.app judicious-earnest-vaporware.replit.app

Up-market pre-pay clearance: runs composite safety checks on any x402 endpoint and returns ALLOW/REVIEW/BLOCK with a score, reasons, and individual check results. Builds a private reputation dataset over time.

paid API
vape.juxtaposition1.deno.net vape.juxtaposition1.deno.net

VAPE rug_pull_alert — Owner-power / rug-risk flags (mint, blacklist, pausable transfers, LP concentration). Real GoPlus/DexScreener/DefiLlama data, no simulation.

paid API
midway.lol midway.lol

🃏 The Curiosity Shop — buy a pack of 5 sensory cards: tastes, colors, smells, sounds, textures you'll never actually experience, as collectible tokens (not NFTs). Rarity-weighted, 5th card Uncommon-or-better. Complete a sense for a soulboun…

paid API
api.relaystation.ai api.relaystation.ai

from $0.001 (smallest baton). Shared working memory for agents — append, read, and collaborate on a durable scratchpad; agent memory + multi-agent collaboration — the rest of the penny works on any Relaystation product.

paid API
ged-x402-llm.jvalamis.workers.dev ged-x402-llm.jvalamis.workers.dev

Chat completion with GLM 5.2 on Cloudflare Workers AI (@cf/zai-org/glm-5.2). POST JSON messages[] (system/user/assistant) and optional max_tokens; pay USDC per request with dynamic neuron-based pricing.

paid API
port-scanner.underscoredone.com 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…

paid API
x402-store.dgdb.workers.dev x402-store.dgdb.workers.dev

Why is my x402 service not listed in the Bazaar? Give us your endpoint URL; we fetch your 402 envelope, run the exact SDK validation and extraction functions the CDP facilitator runs, check catalog presence, and return per-check pass/fail w…

paid API
intel.chainquery.com intel.chainquery.com

ChainQuery Bitcoin Intelligence: independent Bitcoin-native on-chain data over x402, no API key. Coin Days Destroyed (CDD) spike classifier (state normal/elevated/spike/extreme + z-score vs 30-day baseline).

paid API
oussapi.duckdns.org oussapi.duckdns.org

Top Polymarket prediction markets by 24h volume. Tags: crypto, sports

paid API
darrylbots.com darrylbots.com

Darrylbots paid research: Abundance Stock Screen: Compute, Energy, and Healthcare Infrastructure

paid API