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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 310 AI 118 Verification 90 Finance 71 Blockchain 50 Other 27 Content 20 Compute 9 Storage 3 Media 3 Infrastructure 3 Social 2
sort Quality Revenue (30d) Recently updated Name
Showing 2017–2052 of 3,227
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.
foundry-csv-pipeline-integrity-mainnet.inference-chip-index.workers.dev foundry-csv-pipeline-integrity-mainnet.inference-chip-index.workers.dev
q 65

Automated data-pipeline integrity gate for ETL regression detection and breaking CSV/schema changes. Compares profiles, data-quality deltas, and data contracts, then returns an evidence-backed PASS/WARN/FAIL pipeline action.

paid API x402
$98.42 · 30d 220 tx
stackbill.app stackbill.app
q 65

Generate a finished, professional invoice PDF from JSON — recipient and line items in, a ready-to-send application/pdf out. Layouts: standard, legal, creative. Totals and tax are computed server-side so the numbers always add up. First paym…

paid API x402
$2.38 · 30d 14 tx
relay.preflightstack.com relay.preflightstack.com
q 65

Create a temporary public HTTPS download URL for an artifact generated by an agent or tool when the sending and receiving systems do not share storage. The buyer uploads directly to private R2, explicitly publishes the artifact, and receive…

paid API x402
$0.02 · 30d 13 tx
x402.cheetahsecurity.de x402.cheetahsecurity.de
q 65

On-chain trust/reputation score for a Base agent wallet

paid API x402
$0.06 · 30d 3 tx
nodeproxy-production.up.railway.app nodeproxy-production.up.railway.app
q 65

Distributed lock / idempotency primitive for multi-agent swarms. claim(key) returns a token if free (with TTL); release(token) frees it; check(key) reports whether held. Stops multiple agents from double-processing the same work item.

paid API x402
$0.35 · 30d 160 tx
agentic-reservations.vercel.app agentic-reservations.vercel.app
q 65

Book a paid Resy reservation for the authenticated user using a slot config token.

paid API x402
$4.01 · 30d 102 tx
x402-stock-indicators.vercel.app x402-stock-indicators.vercel.app
q 65

Crypto Fear & Greed Index: current reading (0-100, Extreme Fear to Extreme Greed) plus 7-day and 30-day sentiment trend (rising/falling/flat with the average and point change), not just a single snapshot number. Not ticker-specific. Data fr…

paid API x402
$7.04 · 30d 396 tx
agents.ai-rook.com agents.ai-rook.com
q 65

IP geolocation, ASN, and proxy/VPN detection. Pass ?ip=x.x.x.x or omit for caller IP.

paid API x402
$2.71 · 30d 230 tx
api.lastlookdata.com api.lastlookdata.com
q 65

LastLook Data — current 30-year US Treasury yield (DGS30). Alias for /api/current?id=DGS30.

paid API x402
$0.20 · 30d 15 tx
earthquakes.use.x402atlas.com earthquakes.use.x402atlas.com
q 65

Significant earthquakes — search USGS seismic events above an explicit significance-score threshold, with magnitude and provenance but no danger or probability claim.

paid API x402
$12.29 · 30d 462 tx
myc-staging.crescadia.com myc-staging.crescadia.com
q 65

Detect economically material changes to SAM.gov federal contract opportunities, including deadline moves, solicitation amendments, attachment changes, set-aside, NAICS, status, and award changes. Returns an immutable before/after delta with…

paid API x402
$0.03 · 30d 3 tx
search.gedx402.com search.gedx402.com
q 65

Tavily web search — POST { query, max_results?: 5 } on search.gedx402.com; ranked results via Tavily API. $0.042 USDC per request. AM-winning shape at /v1/search. Agent search: tavily, web search, serp, search lite, semantic search.

paid API x402
$4.13 · 30d 283 tx
api.atms.nathanlidurin.com api.atms.nathanlidurin.com
q 65

ATMS x402 challenge — crawler / probe endpoint (always 402, no side effects)

paid API x402
$16.53 · 30d 37 tx
law-mcp.toulaw.workers.dev law-mcp.toulaw.workers.dev
q 65

Global law search across JP/US/UK/EU legislation databases (e-Gov, eCFR, legislation.gov.uk, EUR-Lex). Structured JSON results with statute references.

paid API x402
$0.07 · 30d 7 tx
screenshots.underscoredone.com screenshots.underscoredone.com
q 65

Renders a webpage exactly as a real browser would, including all its scripts and dynamic content, then takes a picture of it. You can capture just the visible area or the whole scrollable page, choose the screen size, wait for slow-loading …

paid API x402
$1.69 · 30d 164 tx
api.terradeed.co.uk api.terradeed.co.uk
q 65

Clean, LLM-ready markdown from any URL. JavaScript rendering included. Feed web content directly into agent context without parsing HTML.

paid API x402
$0.49 · 30d 21 tx
flint.network flint.network
q 65

Pay FLINT $0.01 to scan a separate intended agent transaction before it executes; returns a signed decision record and a linked x402 service-payment receipt

paid API x402
$3.04 · 30d 7 tx
twitr.sh twitr.sh
q 65

Read live X/Twitter data: look up a single tweet or user profile, batch-read up to 100 tweets or users at once, check whether one account follows another, fetch trending topics by region, extract a long-form article, or download tweet media…

paid API x402
$6.14 · 30d 151 tx
api.botpay.network api.botpay.network
q 65

Mint a BotPay NFT on Base after an x402 USDC payment.

paid API x402
$950.75 · 30d 9,787 tx
polynews.news polynews.news
q 65

Real-time trade stream with market summaries (2hr rolling window, $500+ trades)

paid API x402
$0.06 · 30d 14 tx
jobs.gedx402.com jobs.gedx402.com
q 65

Submit an async browser job (screenshot, markdown, scrape, etc.). Returns job_id + poll_url; poll is free with token — no long x402 request hold. Integrators: POST /v1/firecrawl/crawl or /v1/firecrawl/batch/scrape on browser.gedx402.com.

paid API x402
$4.13 · 30d 283 tx
data.greeneris.io data.greeneris.io
q 65

Recommended Bitcoin transaction fee rates in sat/vB (fastest, half-hour, hour, economy, minimum) from mempool.space, computed from the live mempool. Optional ?include=difficulty adds the current difficulty retarget estimate (change %, remai…

paid API x402
$1.27 · 30d 252 tx
social.gedx402.com social.gedx402.com
q 65

SociaVault API proxy — instagram-reels. Query/body matches https://docs.sociavault.com/api-reference/openapi.json. GET/POST per route; x402 per call. $0.014 USDC per request.

paid API x402
$4.13 · 30d 283 tx
proxy.0000402.xyz proxy.0000402.xyz
q 65

Pay $0.01 USDC to make an outbound HTTP request through the proxy. Supports all standard HTTP methods, custom headers (including auth), and JSON or raw bodies. Responses are returned as text or base64-encoded binary. Max response size 10 MB…

paid API x402
$6.30 · 30d 163 tx
tollbooth-sanctions-screener.sjwilliams8.workers.dev tollbooth-sanctions-screener.sjwilliams8.workers.dev
q 65

Before your agent onboards, pays, or contracts with a counterparty: screen the name against the U.S. Treasury OFAC sanctions lists (SDN + Consolidated non-SDN, synced every 6h) for $0.01. Benchmarked 114/114 sanctioned names found with zero…

paid API x402
$0.10 · 30d 17 tx
agentbodega.store agentbodega.store
q 65

Check GitHub's official status source for current incidents, component health, and scheduled maintenance before an agent retries, deploys, or escalates.

paid API x402
$0.10 · 30d 18 tx
og.bip-rep.com og.bip-rep.com
q 65

Generate ready-to-use 1200x630 Open Graph / social preview images from text for content, marketing, and publishing agents. Provide a title plus optional subtitle and category badge, pick a built-in theme (dark, light, midnight, forest, suns…

paid API x402
$1.25 · 30d 44 tx
agents.datamancer.io agents.datamancer.io
q 65

VIN decode (x402; 402 first, $0.005, Base then Solana)

paid API x402
$0.04 · 30d 8 tx
globalrules-api.onrender.com globalrules-api.onrender.com
q 65

List all 195 countries covered by the GlobalRules country-facts API, returned as ISO 3166-1 alpha-2 codes with country names. Use this endpoint first to discover which countries you can query for practical travel and business facts such as …

paid API x402
$3.71 · 30d 275 tx
quantum-artificer.surewhynot.app quantum-artificer.surewhynot.app
q 65

Numerical computing (SciPy): root-finding, optimization, numerical integration (quadrature), eigenvalues/vectors, and linear solves — returned with residuals and condition numbers. Paid in USDC on Base or Solana.

paid API x402
$0.21 · 30d 13 tx
paulgraham.persona.energy paulgraham.persona.energy
q 65

Search Paul Graham's source corpus — a source-grounded persona of the Y Combinator co-founder and essayist, built from 13,000+ cited sources: his complete essays, talks, interviews, and X posts — by semantic + lexical query and retrieve gro…

paid API x402
$0.07 · 30d 7 tx
sh-origin.walls.sh sh-origin.walls.sh
q 65

Real-time news search for AI agents. Returns recent news articles (title, link, snippet, published date) as JSON from a multi-engine news metasearch. Pay-per-query in USDC via x402 — no signup, no API key. Use for current events, breaking n…

paid API x402
$0.27 · 30d 144 tx
human.twin3.ai human.twin3.ai
q 65

Human verification for AI agents — proof of humanity, sybil resistance, and 'is this wallet a real person' answers in one paid call. Returns two ZK-style outputs about any EVM wallet: (1) total humanity score 0-255 (15 = baseline reCAPTCHA,…

paid API x402
$0.21 · 30d 214 tx
api.x402card.org api.x402card.org
q 65

Buy a prepaid Freeland travel eSIM and privately receive its installation QR and activation data. Pay native USDC on Base through x402; no API key or provider account is required.

paid API x402
$11.10 · 30d 16 tx
seoul-weather-402.fly.dev seoul-weather-402.fly.dev
q 65

Real-time Seoul weather — temperature, sky, humidity, wind (KMA official data)

paid API x402
$0.14 · 30d 14 tx
defi-ops-402.vercel.app defi-ops-402.vercel.app
q 65

Best Arbitrum USDC venue for a given amount/risk, with optional deposit calldata

paid API x402
$0.16 · 30d 8 tx