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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 2377–2412 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.
imagcon.app imagcon.app
q 65

Generate one image from a text prompt: app icon, brand logo, character mascot or illustration. POST JSON {description, type?, style?, aspect_ratio?}. type is icon, logo, mascot or illustration (default icon; only icon gets app-icon framing …

paid API x402
$2.38 · 30d 14 tx
jobs.use.x402atlas.com jobs.use.x402atlas.com
q 65

Job search — find current openings by role, skill or company with location, salary, schedule, qualifications and direct application links.

paid API x402
$12.29 · 30d 462 tx
dependency-risk.use.x402atlas.com dependency-risk.use.x402atlas.com
q 65

Batch dependency vulnerability check — check ordered exact package versions in OSV with deduplicated CVE enrichment, explicit completeness, and CISA KEV known-exploited signals.

paid API x402
$12.29 · 30d 462 tx
agent-paycheck.onrender.com agent-paycheck.onrender.com
q 65

Pre-payment risk and usefulness check for AI agents deciding whether to pay an x402 endpoint.

paid API x402
$0.01 · 30d 7 tx
xl402.agentsats.org xl402.agentsats.org
q 65

Extrae el contenido de una URL y lo devuelve limpio en Markdown/HTML para el contexto de un LLM.

paid API x402
$0.02 · 30d 1 tx
signal.quickai.build signal.quickai.build
q 65

Quick Signal TA v3.1.0 — Crypto technical analysis. Ten indicators with natural-language assessments. Query params: token (required), timeframe, bollinger_period, rsi_period.

paid API x402
$0.32 · 30d 18 tx
stationfx.com stationfx.com
q 65

Function marketplace for AI agents. Browse economic data, computed signals, and deterministic functions across 12 categories. Pay per call in USDC on Base via x402. No API keys, no subscriptions. Search the catalog free at /discover/search,…

paid API x402
$6.78 · 30d 346 tx
rest.coincap.io rest.coincap.io
q 65

Full asset data for one or more slugs (agent-optimized).

paid API x402
$0.19 · 30d 33 tx
browser.gedx402.com browser.gedx402.com
q 65

Firecrawl v2 API proxy — map. JSON body matches https://docs.firecrawl.dev/api-reference/v2-introduction. Poll GET routes are free; POST/PUT/DELETE are x402. $0.010 USDC per request. Agent search: site map, crawl map, firecrawl map, links.

paid API x402
$4.13 · 30d 283 tx
surf.cascade.fyi surf.cascade.fyi
q 65

Search tweets with advanced operators (recommended). Body param is `query` (not q), e.g. {"query":"from:elonmusk AI min_faves:100"}

paid API x402
$1.13 · 30d 224 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
ppu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.aws ppu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.aws
q 65

Windfall impact on FIRE timeline calculator. Runs the FIRE net-worth simulation twice — with and without a one-time lump sum added at a given year — and reports how many years the windfall shaves off your time to financial independence.

paid API x402
$1.34 · 30d 134 tx
ocr.underscoredone.com ocr.underscoredone.com
q 65

Send a picture, either as a public web address or as base64-encoded image data, and get back the plain text found inside it.

paid API x402
$1.69 · 30d 164 tx
alphapipeline-eu.onrender.com alphapipeline-eu.onrender.com
q 65

Real-time Korea (Upbit) vs global crypto price premium - the 'kimchi premium' - with reverse-premium and 1h-surge alerts. Paid in USDC on Base.

paid API x402
$1.63 · 30d 81 tx
tollbooth-hello.sjwilliams8.workers.dev tollbooth-hello.sjwilliams8.workers.dev
q 65

Test endpoint for verifying x402 payment integration end to end. Returns a static greeting in the Agent Tollbooth standard response envelope. Not a data product — use it to smoke-test your x402 client for $0.001 before calling our complianc…

paid API x402
$0.10 · 30d 17 tx
cryptyx.ai cryptyx.ai
q 65

The entry point for agents landing on CRYPTYX. Returns the full signal registry (every atomic and composite signal, all versions) with class, horizon, geometry, parameters, 30-day trigger stats, three-axis health grades, walk-forward IS/OOS…

paid API x402
$6.46 · 30d 272 tx
kaisha-api.hp-vladic.workers.dev kaisha-api.hp-vladic.workers.dev
q 65

Japanese business-day calculator: check if a date is a business day, add N business days to a date, or count business days in a range. Accounts for weekends and Japanese national holidays; optional Saturday and year-end/new-year rules.

paid API x402
$0.02 · 30d 11 tx
api.speccy.cloud api.speccy.cloud
q 65

Top Polymarket prediction markets by 24h volume. Returns up to 50 markets with id, question, slug, volume, volume24hr, liquidity, endDate, outcomes and outcomePrices.

paid API x402
$1.16 · 30d 17 tx
observer.137-184-67-179.sslip.io observer.137-184-67-179.sslip.io
q 65

Live Bitcoin BTC-USD market-regime and risk evidence for autonomous AI agents, algorithmic systems, portfolio monitors, and quantitative workflows. Returns current market state and phase, coherence, commitment, pressure, derived directional…

paid API x402
$0.12 · 30d 12 tx
api.x402-hosting.com api.x402-hosting.com
q 65

Create an upload session to deploy a new version of an existing project. Call this when publishing an update; it returns a presigned artifact upload URL. Only the project owner wallet can pay.

paid API x402
$8.17 · 30d 19 tx
api.surplusintelligence.ai api.surplusintelligence.ai
q 65

Get OpenAI-compatible inference from many models at market prices via Surplus Intelligence.

paid API x402
$17029.89 · 30d 11,714 tx
rtt.phoenix-ai.work rtt.phoenix-ai.work
q 65

Boolean pre-flight check for L2 transaction safety across all 12 chains (?chain= param, default: base). Returns safe=true/false with reason code. Revert ratio data available for Base and Arbitrum only (eth_getBlockReceipts); other chains us…

paid API x402
$0.09 · 30d 9 tx
lion-x402-bible.lionmaster-operations.workers.dev lion-x402-bible.lionmaster-operations.workers.dev
q 65

CPG product data + shop prices by barcode or name. Open Food Facts + Open Prices. Ed25519 attested.

paid API x402
$4.14 · 30d 264 tx
sitemap-url-extractor.underscoredone.com sitemap-url-extractor.underscoredone.com
q 65

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 x402
$1.69 · 30d 164 tx
x402-store.dgdb.workers.dev x402-store.dgdb.workers.dev
q 65

Decode an EVM signature request (EIP-712 typed data, Permit/Permit2, or ERC-20 approve calldata) into a structured intent: what token, which spender, how much, until when, plus risk_flags and an action_hint. Deterministic, no LLM. Answers a…

paid API x402
$1.14 · 30d 90 tx
foundry-par007-machine-revenue-mainnet.inference-chip-index.workers.dev foundry-par007-machine-revenue-mainnet.inference-chip-index.workers.dev
q 65

Find recently updated ClinicalTrials.gov study identifiers, titles and registry status for a condition, with the registry processing date. No medical conclusion.

paid API x402
$98.42 · 30d 220 tx
blockchain-api.x402-chain-tools.workers.dev blockchain-api.x402-chain-tools.workers.dev
q 65

Lookup Base transaction by hash on Base Mainnet. Return sender, recipient, value, nonce, block, gas fields, and input data when found.

paid API x402
$0.02 · 30d 14 tx
api.tokenplans.dev api.tokenplans.dev
q 65

Full JSON catalog of verified AI coding-subscription plans across 31 providers (Claude, OpenAI, Cursor, Gemini, and more). Each record: monthly price and cadence, included models, usage ceilings and rate-limit windows, coding-tool lock-in, …

paid API x402
$0.30 · 30d 3 tx
seo-data-extractor.underscoredone.com seo-data-extractor.underscoredone.com
q 65

Give this API a web address and it will visit that page, then hand back everything an SEO professional needs to know: the page title, meta description, meta keywords, robots instructions, canonical link, H1/H2/H3 headings, how many links ar…

paid API x402
$1.69 · 30d 164 tx
qr-code-generator.underscoredone.com qr-code-generator.underscoredone.com
q 65

Send a list of texts — website addresses, phone numbers, plain words, WiFi details, anything — and get back a ready-to-use QR code image for each one. Every QR code comes as a base64-encoded PNG you can drop straight into a webpage or save …

paid API x402
$1.69 · 30d 164 tx
port-scanner.underscoredone.com port-scanner.underscoredone.com
q 65

Give this API a hostname or IP address and it tries connecting to each port in your requested range. For every port that answers it reports whether it is open or blocked, which service is likely running there (a web server, SSH), and what s…

paid API x402
$1.69 · 30d 164 tx
api.sumvid.app api.sumvid.app
q 65

Full transcript of a YouTube video from its URL — captions/subtitles as clean plain text in your language. YouTube transcript, video to text, captions extraction, subtitle download, speech to text, multilingual. 105 languages supported, inc…

paid API x402
$0.01 · 30d 3 tx
shopify-ai-rank-checker.underscoredone.com shopify-ai-rank-checker.underscoredone.com
q 65

Checks how well a Shopify store's products show up when AI shopping assistants such as ChatGPT, Gemini, Perplexity, Grok, and Copilot search for products, and reports the store's rank and its closest competitors. Searches Shopify's real Glo…

paid API x402
$1.69 · 30d 164 tx
kevinhoff.com kevinhoff.com
q 65

X Preflight: read a draft post against X's open-sourced ranking code. Returns what is already settled before you post, whether it enters the pool strangers are drawn from, how long it stays retrievable, which filters delete it, and which ga…

paid API x402
$0.18 · 30d 18 tx
chainsscope.duckdns.org chainsscope.duckdns.org
q 65

Current network fee conditions -- gas price (ETH/Base/Arbitrum/Optimism/Polygon), sat/vB fee tiers (Bitcoin), or recent prioritization fees (Solana) -- useful for an agent about to construct a transaction itself.

paid API x402
$0.51 · 30d 34 tx
stablestudio.io stablestudio.io
q 65

Get a client token for direct upload to Vercel Blob

paid API x402
$157.77 · 30d 559 tx