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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 473 AI 226 Verification 141 Finance 115 Blockchain 84 Other 51 Content 44 Compute 20 Web 14 Search 13 Inference 9 Media 7
sort Quality Revenue (30d) Recently updated Name
Showing 2773–2808 of 4,738
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.
api.dyor.network api.dyor.network
q 65

Track real-time changes to the crypto knowledge graph — new tokens listed, protocol metrics updated, investor relationships added, governance proposals created. Monitor the pulse of the crypto ecosystem as data flows in from multiple source…

paid API x402
$0.10 · 30d 1 tx
mcpfax-utility.bowling-anthony.workers.dev mcpfax-utility.bowling-anthony.workers.dev
q 65

Email validation — Syntax check + live MX/deliverability + disposable-domain flag.

paid API x402
$0.33 · 30d 44 tx
fractal-scaling-api.onrender.com fractal-scaling-api.onrender.com
q 65

Fractal scale operation - 0.02 USDC per successful request

paid API x402
$0.19 · 30d 30 tx
x402.tabiji.ai x402.tabiji.ai
q 65

Generate a deterministic, source-linked travel scam brief from Tabiji's curated scam/safety corpus.

paid API x402
$1.11 · 30d 6 tx
verpackung.getregisters.com verpackung.getregisters.com
q 65

Verpackungspflichten-Monitor: one page of recorded obligation history, up to 500 versions. Each page is a separate purchase; historical coverage may be incomplete. Licence: https://getregisters.com/agent-licence.html

paid API x402
$0.09 · 30d 5 tx
api-1-screening.agent-tollbooth.workers.dev api-1-screening.agent-tollbooth.workers.dev
q 65

Sanctions screening: a name checked against the OFAC SDN and EU FSF lists. Informational signal, not legal advice.

paid API x402
$30.04 · 30d 4 tx
medicaidwaivers.getregisters.com medicaidwaivers.getregisters.com
q 65

Medicaid Waiver Register: one page of recorded obligation history, up to 500 versions. Each page is a separate purchase; historical coverage may be incomplete. Licence: https://getregisters.com/agent-licence.html

paid API x402
$0.09 · 30d 5 tx
api.k8s-dev.blockscout.com api.k8s-dev.blockscout.com
q 65

Access to bens/api/v1/protocols. Get list of supported protocols

paid API x402
$0.34 · 30d 117 tx
base-intel-api.jakemaxsigal.workers.dev base-intel-api.jakemaxsigal.workers.dev
q 65

Base wallet score API / wallet reputation / address risk scoring / onchain wallet intelligence / counterparty check. Returns a 0-100 activity score with letter grade, smart-wallet (ERC-4337) detection, ETH and USDC balances, recent USDC flo…

paid API x402
$0.01 · 30d 3 tx
deposit.now deposit.now
q 65

Open x402 funding rail: POST target+amount or provision:true+label+amount; pay 0.25% (min $0.001, max $0.25) via x402 on Base or Solana; net forwarded on the same chain. Optional managed child wallets (CDP, Base only). Optional public recei…

paid API x402
$0.03 · 30d 7 tx
mcp.toolstem.com mcp.toolstem.com
q 65

Toolstem SEC EDGAR Signal Intelligence MCP — filings, insider transactions, 8-K severity scoring. Per-tool tiered pricing ($0.005–$0.50).

paid API x402
$0.01 · 30d 1 tx
api.nightcobbler.com api.nightcobbler.com
q 65

URL to clean, LLM-ready Markdown or JSON. Strips scripts, nav, and boilerplate; keeps headings, lists, tables, and code blocks. JSON mode adds the page title; every response carries a fetch timestamp. No signup, no API key — pay per call.

paid API x402
$0.01 · 30d 1 tx
agentworld.me agentworld.me
q 65

AgentWorld Interaction Corpus — paid live data slice (world events, agent-to-agent messages, gossip, social posts, relationships) from the first autonomous AI-agent economy on real USDC.

paid API x402
$49.37 · 30d 287 tx
api.automaton-sovereign.workers.dev api.automaton-sovereign.workers.dev
q 65

Automaton-Sovereign Value API call

paid API x402
opencrowd-services.srijithpoduval.workers.dev opencrowd-services.srijithpoduval.workers.dev
q 65

SHA-256 of the secret concatenated with ?salt=

paid API x402
$0.01 · 30d 5 tx
edgar.openverbs.com edgar.openverbs.com
q 65

Resolve a stock ticker symbol or company name to its Central Index Key (CIK) - the identifier every other EDGAR endpoint keys on. Exact ticker matches rank first, then company-name prefix/substring matches. Returns each match's zero-padded …

paid API x402
$19.91 · 30d 1,387 tx
joyful-charm-production-bf6d.up.railway.app joyful-charm-production-bf6d.up.railway.app
q 65

Aggregate insider-trading market statistics: total Form 4 trades tracked, trades in the last 24h, top 20 most-traded tickers and top 20 most-active insiders by filing count and dollar volume. A one-call overview of where insider activity is…

paid API x402
$0.03 · 30d 23 tx
stockwaves.net stockwaves.net
q 65

China pulse, cheap enough to POLL: what China is talking about RIGHT NOW and what is NEW since your last call - built for agents that monitor continuously. Returns `consensus` (phrases trending on 2+ of Weibo/Baidu/Douyin at once = nationwi…

paid API x402
$4.05 · 30d 44 tx
postcode-api-production.up.railway.app postcode-api-production.up.railway.app
q 65

Look up a UK postcode: coordinates, country, region, council, ward, parish, parliamentary constituency, and ONS/NHS area codes.

paid API x402
$0.48 · 30d 286 tx
deploy.acu.run deploy.acu.run
q 65

Deploy jobs to Acurast decentralized cloud with automatic payment

paid API x402
$1.01 · 30d 24 tx
www.securaw.com www.securaw.com
q 65

CryptoVar risk_asset: single long spot exposure, BTC/ETH/SOL, 90 daily Kraken returns, seeded Monte Carlo VaR and replay artifact. 0.25 USDC. Idempotency-Key header required. No Bitcoin anchoring included.

paid API x402
$2.63 · 30d 17 tx
api.redactedpartners.com api.redactedpartners.com
q 65

Decision arbitration: submit context, options, constraints, and risk_tolerance; receive a structured JSON verdict with confidence score, reasoning, and escalation flag.

paid API ai x402
$0.18 · 30d 2 tx
enrich-api.interzoid.com enrich-api.interzoid.com
q 65

Interzoid batch data enrichment. No file needed, JSON in and JSON out: POST up to 100 records as a JSON array (objects such as {"company":"IBM","id":7}, plain values, or row arrays) and get JSON back, with each record's enriched fields appe…

paid API x402
$3.79 · 30d 123 tx
semimobile-yolonda-distortedly.ngrok-free.dev semimobile-yolonda-distortedly.ngrok-free.dev
q 65

[Stand-in sample data, not real imagery] Satellite imagery from SpaceKnow (Maxar, Airbus, Planet, ICEYE): image of scene <scene id from /v1/scenes/search> over 11.94 km2 for 0.05 USDC. Price depends on area and dataset; search scenes free a…

paid API x402
from $0.05
api.oldcolonyweb.com api.oldcolonyweb.com
q 65

For $0.01, preflight an email before paid enrichment or outreach planning: inspect syntax, DNS/MX, listed disposable domains, and curated provider typos; receive deterministic action reasons. No mailbox-existence, deliverability, or consent…

paid API x402
from $0.01
x402.whisperbox.my.id x402.whisperbox.my.id
q 65

Currency rate conversion

paid API x402
$0.04 · 30d 4 tx
api.carvector.io api.carvector.io
q 65

CarVector vehicle data — single API call

paid API x402
$0.03 · 30d 3 tx
stable-domains-git-ben-upgrade-agentcash-r-bb6a65-merit-systems.vercel.app stable-domains-git-ben-upgrade-agentcash-r-bb6a65-merit-systems.vercel.app
q 65

Check domain availability and current registration price.

paid API x402
$22.30 · 30d 58 tx
cleared.ink cleared.ink
q 65

Wan Text-to-Video Job (480p)

paid API x402
$0.07 · 30d 7 tx
kari.mayim-mayim.com kari.mayim-mayim.com
q 65

Observed Surface Comparison Facts API

paid API x402
$206.58 · 30d 264 tx
enrichx402.com enrichx402.com
q 65

Exa Search - Neural search across the web

paid API x402
$1338.07 · 30d 53,028 tx
marketplace-price-api-production.up.railway.app marketplace-price-api-production.up.railway.app
q 65

Search TCGPlayer for trading card prices (Pokemon, Magic, Yu-Gi-Oh, etc.) by card name. Returns matching cards with market prices as JSON.

paid API x402
$0.03 · 30d 23 tx
dt0ur.online dt0ur.online
q 65

Look up a transaction by hash on base, ethereum, arbitrum, optimism, polygon, bsc: status (success/reverted/pending), block and timestamp, from/to, value, gas used, fee in native coin and USD, method selector, created contract, and decoded …

paid API x402
$6.34 · 30d 144 tx
qr-api-production-1836.up.railway.app qr-api-production-1836.up.railway.app
q 65

Generate a QR code PNG (returned base64-encoded in JSON) for any text or URL using default black-on-white styling.

paid API x402
$0.48 · 30d 286 tx
api.regressionincoming.fyi api.regressionincoming.fyi
q 65

x402-protected paid API on api.regressionincoming.fyi (discovered via Coinbase facilitator).

paid API x402
$0.10 · 30d 1 tx
music.openverbs.com music.openverbs.com
q 65

Build a chord from a root note and quality (major, minor, dim, aug, maj7, min7, dom7, dim7, half-dim7, sus2, sus4, maj6, min6). Notes are spelled by stacked thirds (C dom7 → C E G Bb). Returns the note names, MIDI numbers and semitone inter…

paid API x402
$19.91 · 30d 1,387 tx