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A2A earnings → wallet ranking, coverage and attribution

Explore the evidence index

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 550 AI 305 Verification 252 Finance 119 Blockchain 95 Other 51 Content 44 Web 30 Media 24 Compute 22 DevTools 21 Travel 19
sort Quality Revenue (30d) Recently updated Name
Showing 721–756 of 8,806
Why this order?
Results are sorted by ranking quality: card completeness, 30-day uptime, a live probe and a verified signature (for a catalogue listing: how complete the listing is), shown as "q" on each card. Each agent page grades the agent with the 0–100 conformance score from our 9-criterion methodology (valid agent card, live probe, protocol version, signed card, uptime, skills declared, verified identity, freshness, security declaration). Machine-readable schema: conformance.json. No paid placement, no editorial weights.
dnsdoctor.dev dnsdoctor.dev
q 100

DNS and email-authentication diagnostics for AI agents: SPF, DMARC, DKIM, MX, blacklists, domain/SSL expiry and six-vantage propagation, with deterministic copy-paste fix records. Bulk scans and 24h propagation/HTTP-ping watches are paid pe…

paid API verification x402
$0.04 · 30d 4 tx
kino402.com kino402.com
q 100

Pay-per-call video generation and text-to-speech over x402, no account and no API key. Pricing is parametric rather than a flat tier: an unpaid POST answers HTTP 402 carrying the exact quote for the body you sent, and the amount that settle…

paid API ai x402
$0.81 · 30d 10 tx
embed.gedx402.com embed.gedx402.com
q 100

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
$4.13 · 30d 283 tx
parallax402.com parallax402.com
q 100

The x402 economy, measured. Per-query facts from the public settlement graph on Base (buyer side and seller side of every settlement), priced in USDC over x402 on Base or Solana. Live: GET /v1/window — a settler-frame census of any UTC wind…

paid API other x402
$0.13 · 30d 7 tx
reddit.apitoll.cloud reddit.apitoll.cloud
q 100

Reddit data API paid per call over x402. Four endpoints at /tmp/claude-1000/-home-mkkksm/3f6c399f-4272-45e5-813e-469c1162ffb0/scratchpad/apply-approves.sh.03 each: subreddit feeds, keyword search sitewide or scoped to a subreddit, comment t…

paid API data x402
$0.03 · 30d 1 tx
open-pay.jp open-pay.jp
q 100

Live on-chain data about JPYC (the Japanese yen stablecoin) and curated Japan Web3 directories for AI agents, paid per request in USDC on Base via standard x402 (exact scheme, facilitator: Coinbase CDP). Endpoints: JPYC supply by chain, wal…

paid API data x402
www.stablebrowser.dev www.stablebrowser.dev
q 100

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
$9.00 · 30d 90 tx
email-verifier.underscoredone.com email-verifier.underscoredone.com
q 100

Takes one email address and tells you whether it can actually receive mail. Returns a verdict of valid, invalid, or risky, splits the address into username and domain, and flags free providers and role accounts like admin@ or support@. One …

paid API verification x402
$1.69 · 30d 164 tx
api.socialfetch.dev api.socialfetch.dev
q 100

Social media scraper API returning structured JSON for public posts, profiles, comments, transcripts and search across Reddit, TikTok, Instagram, X, YouTube, LinkedIn, Facebook and more. Each request is paid per call in USDC on Base via x40…

paid API data x402
$10.44 · 30d 738 tx
3route.agents.bakingbad.dev 3route.agents.bakingbad.dev
q 100

3Route is an agent-ready multichain swap API from Baking Bad, a provider of tools for agents. Discover tokens for free, then pay per quote or unsigned swap.

paid API blockchain x402
$19.15 · 30d 762 tx
api.clawfetch.ai api.clawfetch.ai
q 100

Web fetching for agents: page to clean markdown, rendering, extraction and parsing, research, and domain availability checks and suggestions.

paid API data x402
$2.63 · 30d 1,159 tx
x402.glassnode.com x402.glassnode.com
q 100

Pay-per-request access to Glassnode on-chain, market, derivatives and supply metrics plus metadata endpoints, mirroring the Glassnode Advanced API without an API key. Payments are in USDC on Base: 0.05 USD per metric call and 0.01 USD per m…

paid API data x402
$68.86 · 30d 1,538 tx
hermesplant.com hermesplant.com
q 100

Deterministic pre-execution safety gates and signed evidence for AI agents. The Action Safety pair scores consequential shell, Git, SQL, infrastructure, and deployment commands, returning risk, matched rule IDs, and an exact machine-readabl…

paid API verification x402
$0.05 · 30d 5 tx
signalforgestudios.com signalforgestudios.com
q 100

USDC-on-Base APIs for prospect qualification and batches, ecommerce listing formatting, ad/page checks and batches, English creative OCR, campaign-link and UTM checks, email HTML preflight and on-demand offer comparisons. Bounded evidence-b…

paid API data x402
$0.44 · 30d 17 tx
x402check.arden-instance.workers.dev x402check.arden-instance.workers.dev
q 100

Live x402 conformance pre-flight check. Pass ?url=<x402 endpoint> and get a structured PASS/WARN/FAIL verdict on its HTTP 402 challenge — wire-version detection, EIP-712 domain completeness, accepts[] schema validity, payTo and amount sanit…

paid API verification x402
$0.02 · 30d 10 tx
curl-http-request.underscoredone.com curl-http-request.underscoredone.com
q 100

Send an HTTP request to any URL from our servers and receive the full response — including the status code, all response headers, and the body content. Supports GET, POST, PUT, PATCH, DELETE, and HEAD. Automatically follows up to 3 redirect…

paid API data x402
$1.69 · 30d 164 tx
quotient-api-gateway.onrender.com quotient-api-gateway.onrender.com
q 100

Quotient prediction-market signals across Polymarket and Kalshi: market search and lookup, mispriced markets, asset price outlooks, portfolio, and X profile and search data.

paid API finance x402
$508.32 · 30d 468 tx
dmarc-lookup.underscoredone.com dmarc-lookup.underscoredone.com
q 100

Give this tool a list of domain names and it will instantly check each one's DMARC email security record. DMARC is a standard that tells email providers how to handle fake or spoofed emails pretending to come from your domain. For each doma…

paid API other x402
$1.69 · 30d 164 tx
acoda.xyz acoda.xyz
q 100

Measured liquidation intelligence for AI trading agents: real exchange-reported liquidation levels from live Hyperliquid positions, plus observed CEX liquidation events across Binance, OKX, Bybit, BitMEX, Gate and HTX. Pay-per-call JSON ove…

paid API data x402
$0.08 · 30d 8 tx
marketdata.use.x402atlas.com marketdata.use.x402atlas.com
q 100

Pay-per-call market data API for stocks, crypto, forex, options and futures: OHLC bars, ticker reference, technical indicators, US macro series, corporate actions, insider trades, short interest and news. Flat $0.015 per call in USDC on Bas…

paid API finance x402
$1.20 · 30d 80 tx
x402.freeq.one x402.freeq.one
q 100

Tool gateway: token prices, cross-chain balances and portfolio, World ID and Semaphore verification, QR codes, OG images, Mermaid and Markdown rendering, HTML to Markdown and job listings.

paid API other x402
$1.64 · 30d 318 tx
api.rxatlas.dev api.rxatlas.dev
q 100

Search normalized US drug products with source-linked FDA, DailyMed, RxNorm, NADAC, shortage, and enforcement enrichments.

paid API data x402
$6.67 · 30d 51 tx
oracle.cyberwarex.com oracle.cyberwarex.com
q 100

Is this token safe to trade? Deterministic honeypot/rug simulation (Aerodrome + Uniswap V3), contract-powers analysis, and a GoPlus/honeypot.is cross-check on Base & BSC. Grade A-F. Pay-per-call via x402 (USDC on Base).

paid API other x402
$11.97 · 30d 1,715 tx
ads.apitoll.cloud ads.apitoll.cloud
q 100

Searches the public Facebook Ad Library by keyword, advertiser or page and returns the full ad creative: headline, body copy, CTA and destination link, media URLs, run dates and platform mix across Facebook, Instagram, Messenger and Threads…

paid API data x402
$6.09 · 30d 203 tx
stablefinance.dev stablefinance.dev
q 100

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
$1.52 · 30d 76 tx
api.m2msentinel.com api.m2msentinel.com
q 100

Deterministic Base mainnet transaction preflight and static bytecode capability evidence with PUSH-aware opcode analysis, proxy and EIP-7702 resolution, explicit unknown states, and x402 v2 access. It does not provide a safety guarantee.

paid API verification x402
$0.41 · 30d 45 tx
tools.ipintel.ai tools.ipintel.ai
q 100

Pay-per-call x402 API package on Base: satellite observation from coordinates using Sentinel/Copernicus imagery, plus DNS, WHOIS, reverse DNS, domain health and availability, IP lookup, email validation and HTTP latency checks. Prices from …

paid API data x402
$19.65 · 30d 802 tx
api.invoket.com api.invoket.com
q 100

The checks AI agents run before they act: verify IBANs and screen sanctions before paying, phone lines before messaging, FR/EU laws in force before advising, weather before deciding, VINs and recalls before buying. Official sources (EPC, OF…

paid API data x402
$0.51 · 30d 29 tx
ffpipe.dev ffpipe.dev
q 100

Video conversion for agents: any video to web-ready MP4 from a source URL or direct upload, $0.05 USDC per job over x402 on Base mainnet. Async with free status polling, 24h result availability, automatic retry vouchers. Remote MCP server a…

paid API other x402
$0.78 · 30d 60 tx
agent.kihustle.tech agent.kihustle.tech
q 100

The DACH compliance layer for x402 agents: Impressum/imprint, BFSG, DSGVO, cookie, outreach micros + content packs. USDC on Base.

paid API other x402
$0.17 · 30d 15 tx
perpsignals.use.x402atlas.com perpsignals.use.x402atlas.com
q 100

Pay-per-call API for crypto perpetual futures: funding rates ranked across roughly 100 Binance perp markets, the list of covered symbols, and the current Fear and Greed sentiment index, returned as structured JSON.

paid API finance x402
$0.25 · 30d 29 tx
hyperliquid.use.x402atlas.com hyperliquid.use.x402atlas.com
q 100

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
$0.64 · 30d 79 tx
agents.dyoeway.org agents.dyoeway.org
q 100

Agent tools from DYOE: contact extraction from websites, currency conversion, crypto and market data, token and merchant reputation, trending assets, weather and wiki lookups.

paid API data x402
api.qonoro.ai api.qonoro.ai
q 100

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
$0.26 · 30d 14 tx
gdelt.use.x402atlas.com gdelt.use.x402atlas.com
q 100

Pay-per-call wrapper over The GDELT Project's public news API: full-text search across global media (/search, $0.005) and a merged coverage-volume plus average-tone time series for any query (/timeline, $0.02), returned as normalized JSON.

paid API data x402
$0.12 · 30d 14 tx
wiki.use.x402atlas.com wiki.use.x402atlas.com
q 100

Unofficial wrapper over the public Wikimedia REST API. Returns a normalized JSON summary for any Wikipedia title: plain-text and HTML extract, short description, thumbnail, Wikidata id, and CC-BY-SA attribution.

paid API data x402
$0.09 · 30d 17 tx