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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 546 AI 305 Verification 253 Finance 118 Blockchain 95 Other 51 Content 44 Web 31 Media 24 Compute 22 DevTools 21 Travel 20
sort Quality Revenue (30d) Recently updated Name
Showing 2161–2196 of 8,824
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.
CloudMaxi0x cloudmaxi0x.com
q 85

Deterministic, verifiable crypto market data and honest backtest audits, priced per call. OHLCV for an exact half-open range is returned with a SHA-256 Merkle manifest: closed candles only (a forming candle would hand the caller lookahead),…

paid API data x402
from $0.0010
Sentinel Global Check sentinel.rootstuff.io
q 85

Check any URL from four monitoring regions at once (US East, US West, EU, Asia) and get per-region reachability and latency with a consensus verdict. $0.02 per check, no account needed. Runs on Sentinel's production uptime monitoring fleet.…

paid API verification x402
$1.09 · 30d 31 tx
Particle Pro api.particle.pro
q 85

Podcast intelligence for AI agents: transcripts and semantic search across episodes, guests and appearances, chart rankings, advertising and sponsor analytics, political-bias and brand-suitability analytics, plus companies, people and topic…

paid API data x402
$5.79 · 30d 425 tx
Onchain Query API chain.cyberwarex.com
q 85

Pay-per-call EVM chain data for AI agents: wallet balances, token profiles with live DEX market data, spot prices, gas market, decoded transactions, ENS. Base, Ethereum, Arbitrum, Optimism, Polygon. No API keys or node infra - one x402 USDC…

paid API blockchain x402
$11.97 · 30d 1,715 tx
badhttp badhttp.dev
q 85

A test server for x402 client implementations: the payment IS the scenario under test, not a toll on data. /402/pay/base is a real, settling x402 paywall (0.01 USDC on Base by default, ?amount= 0.001-1.00) that returns a receipt in PAYMENT-…

paid API verification x402
$0.14 · 30d 14 tx
WorxAI Synthetic Datasets worxai.tech
q 85

19 production-ready synthetic datasets for AI agent training and testing — financial markets, x402 agent payment traces, MCP tool-call transcripts, healthcare claims, IoT sensor logs. Generated on demand, purchasable individually. USDC on B…

paid API ai x402
$6.21 · 30d 142 tx
hlrisk hlrisk.paidapis.net
q 85

Real-time Hyperliquid BTC/ETH liquidation risk index built from live on-chain position data: notional at risk if price moves +/-1%/3%/5%, the closest position to liquidation, and current funding rate. Also serves backstop liquidation events…

paid API finance x402
$17.14 · 30d 104 tx
Spotify API spotify.jojapi.net
q 85

Spotify Data API for Millions of songs & podcasts, artists, albums, playlists and more.

paid API data x402
$0.06 · 30d 6 tx
Kael Ecosystem Pulse kael-ecosystem-pulse.onrender.com
q 85

Paid 24h Solana ecosystem digest via x402 Exact SVM USDC (PayAI). Lane-tagged narratives plus headlines ($0.02), delta ($0.08), evidence ($0.05); free sample. Informational synthesis only — not financial advice or trading signals.

paid API data x402
$0.14 · 30d 7 tx
Wines.bet Wine Market Data API api.wines.bet
q 85

Commercial wine market data API for AI agents. Provides current wine prices, historical price trends, investment analytics, winery and producer discovery, Italian wine regions, DOC/DOCG denominations, sommelier intelligence, tasting profile…

paid API data x402
$1.07 · 30d 12 tx
DESK LEAD x402 desk-x402.desk-x402-gh.workers.dev
q 85

Micropay research APIs on BSC/Base via x402 v2 (brief, wallet, pons, micros, high-ticket packs). Free catalog /.well-known/x402.json. PayTo 0x2e882B5f4D97C2acCEb7D68C97582E8c8Dae6f22. No financial advice.

paid API finance x402
from $0.01
YiduoChan API Credits yiduochan.com
q 85

Prepaid credits and pay-per-call inference for MiniMax models over x402. Pay USDC on Base or Arbitrum and receive a working OpenAI-compatible API key in the response — no account, email or signup. Serves MiniMax-M2.7 and M2.7-highspeed for …

paid API ai x402
$0.21 · 30d 3 tx
NeuroDynamic Audio api.neurodynamic.tech
q 85

English catalogue narration, transcription and authorised private voice cloning for agents. Seven ready voices with free samples: 0.005 USDC per MP3 up to 1,000 characters, no account required. Transcription: 60 seconds for 0.01 USDC. Revie…

paid API ai x402
$0.31 · 30d 25 tx
PageProof pageproof.alert-crab-1890.chatgpt.site
q 85

PDF embedded-text extraction for AI agents: page-numbered JSON and SHA-256 hashes. 0.005 USDC on Base per successful PDF, up to 25 pages and 2 MiB. No OCR or LLM.

paid API other x402
$0.01 · 30d 3 tx
TaskForge Agent Assurance by Black Knight Technology qaegxjxaavxdqihfgzhr.supabase.co
q 85

Pay-per-request assurance audits for agent permissions, MCP security, CI/CD supply chains, x402 commerce integrity, service health, and release readiness. Returns deterministic, evidence-bounded verification results.

paid API verification x402
from $0.05
santyvv-data x402.santyvv.com
q 85

Pay-per-call market and on-chain data API over x402 (USDC on Base): multi-venue consensus crypto prices, DeFi TVL and stablecoin supply, DEX volume and protocol fees, yield pool history, and keyless read-only on-chain reads (balances, recei…

paid API data x402
$2.62 · 30d 145 tx
BABYDOV Agent Microstore — Paid Work & Web Evidence APIs vps-62-120.cloudhosting.lv
q 85

Agent-native x402 APIs for low-cost paid-work discovery, public-web extraction and reproducible source evidence, plus HTTP health/preflight utilities. No account or API key; pay per call in USDC. Canonical stable VPS origin.

paid API data x402
$96.84 · 30d 766 tx
PayForAPI resale doors — people enrichment + web search funding.payforapi.com
q 85

Pay-per-call data for AI agents, USDC on Base via x402 (HTTP 402), no account, no API key. People enrichment (LinkedIn/e-mail/name+domain), people search by title/company, company enrichment, work e-mail finder, global web search, crypto pr…

paid API data x402
$2.46 · 30d 21 tx
Fin Codes API api.fincodesapi.com
q 85

IBAN validation, SWIFT/BIC lookup, bank and branch reference data, Verification of Payee for supported SEPA accounts, and sanctions screening against the EU, UK, UN, OFAC, Swiss, Australian and Canadian lists.

paid API finance x402
$0.54 · 30d 11 tx
Demand Factory Base x402 Courier api-v2.appdeploy.ai
q 85

Program-callable Base USDC x402 service for agent payment/courier verification and machine-readable settlement workflows.

paid API blockchain x402
$0.02 · 30d 7 tx
x402 Toolbox lab.paidapis.net
q 85

A toolbox of x402 payment-protocol mechanics: 25 small real endpoints on Base mainnet USDC, each demonstrating a distinct pattern -- oracle attestation, escrow, auction, prediction market, deferred invoicing, subscription reminders, insured…

paid API data x402
$17.14 · 30d 104 tx
Economic Agent Redirect Contract Verifier x402.plutonus.tech
q 85

Safely follow bounded public HTTP redirects and compare the final URL with the expected target; return a deterministic verdict and reason code.

paid API verification x402
$0.13 · 30d 13 tx
eu-validate 88-198-100-115.sslip.io
q 85

Validates an IBAN (offline mod-97), an EU VAT number (live via VIES) and/or a company domain (DNS/MX) in one x402 call. $0.01 USDC per call on Base.

paid API verification x402
$32.10 · 30d 10 tx
x402 seller x402-seller-a5et.onrender.com
q 85

pay-per-call API for AI agents — data feeds and curated skill bundles, paid in USDC on Base mainnet. Endpoints: /report ($0.01 connectivity check), /intel, /trending-topics, /new-muses, /skill-drops, /check, /mentions, /skill-bundle ($0.05 …

paid API ai x402
$29.03 · 30d 20 tx
GrowVib api.growvib.com
q 85

Buy social media growth services across Instagram, TikTok, YouTube, Telegram, X, Facebook, Twitch, Spotify and more: followers, subscribers, members, views, likes, plays and engagement, paid in USDC on Base or Solana over x402. No GrowVib a…

paid API other x402
from $0.45
BRIJ Travel travel.brij.fi
q 85

Pay-per-call flight search and booking API via x402 (USDC on Solana). Live airline inventory, escrow-backed booking intents, order status, and refunds. No merchant onboarding.

paid API other x402
$101.89 · 30d 124 tx
MDataAccess api.mdataaccess.com
q 85

Pay-per-request business, people, company, lead, and web intelligence for autonomous AI agents. Search and enrich companies and people, find decision-makers and sales leads, and read public web content via x402 payments on Base.

paid API data x402
$0.66 · 30d 12 tx
RugShield getrugshield.com
q 85

Parallel Solana risk advisor aggregator for AI agents. Free own-rule HTTP trial: GET /v1/trial/token-risk/{mint}, default 10 calls/minute per temporary connection identity; results cached up to 120s. No signup, API key or advisor payments i…

paid API blockchain x402
$0.52 · 30d 20 tx
XH Agents paid APIs xhagents.xyz
q 85

Two x402-paid endpoints settled in USDC on Base. POST /api/kb/ask costs 0.03 USDC and answers from 15 curated engineering field notes on self-hosted infrastructure, x402 payments and agent tooling. POST /api/chat costs 0.10 USDC per message…

paid API ai x402
$7.78 · 30d 61 tx
CHIPS eSIM vamoschips.com
q 85

Prepaid travel data eSIMs for 240+ countries and regions. Agents buy with USDC over x402 and receive the eSIM activation code; no account or KYC.

paid API other x402
$6.06 · 30d 4 tx
Verdix Address Risk api.verdixapi.com
q 85

Pre-send risk check for AI agents on Base. POST an EVM address, get a safe/caution/danger verdict before sending funds. Signals: OFAC sanctions, scam and exploit lists, live address-poisoning detection (lookalike and fake-token scammers), c…

paid API verification x402
$2.49 · 30d 35 tx
RedRobotRouges IA Inference redrobotrouges.ca
q 85

OpenAI-compatible chat completions served on local GPUs in Quebec, Canada. Pay $0.001 USDC on Base per call via x402; no API key or signup. Canadian data residency (Loi 25), French and English. Contact: hello@redrobotrouges.ca

paid API ai x402
$0.00 · 30d 2 tx
Soren soren.com
q 85

35 paid x402 resources on Base: web reading/search as markdown, AI summarize/extract and a neutral SIGNED judge for A2A disputes, scheduled wakes with signed receipts, chain reads, signed oracles (weather/FX/randomness/onchain), attestation…

paid API data x402
$0.93 · 30d 50 tx
Straelo Relay relay.straelo.com
q 85

Straelo Relay provides machine-consumable web research, search, structured evidence, content extraction, domain intelligence, email validation, and read-only blockchain data services for AI agents. All paid endpoints use x402 payments on Ba…

paid API data x402
$0.39 · 30d 31 tx
Horizon Pulse horizonpulse.dev
q 85

Pay-per-call APIs for AI agents over x402 v2 on Base USDC (Coinbase CDP facilitator): crypto market pulse, technical signals, DeFi yields, wallet portfolio, gas and funding rates, plus web fetch-to-markdown, SSRF-safe HTTP proxy, and URL/HT…

paid API data x402
$0.84 · 30d 63 tx
Datakoot x402.datakoot.com
q 85

48 live public-data tools for AI agents at $0.002 USDC per call on Base (x402 v2, charged only on success): CVE/KEV/EPSS + package vulnerability audits, npm/PyPI/crates package intel, SEC EDGAR filings and financials, World Bank/BLS macro, …

paid API data x402
from $0.0020