Skip to content

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 397–432 of 473
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.
Locale Format API localeformat.com
q 65

Verified, CLDR-versioned locale formatting for 120+ locales: currency amounts, numbers and dates per the official CLDR rules (de-CH apostrophe grouping, en-IN lakh, ja-JP zero decimals, Arabic-Indic digits), raw per-locale rules, and a /ver…

paid API data x402
$0.13 · 30d 43 tx
EventEdge Oracle edge.arakelproof.space
q 65

Machine-readable Polymarket and Kalshi market context for AI agents over x402 on Base. Recurring market context, topic context, and richer decision context. Read-only data and decision support; no trade execution.

paid API data x402
$0.05 · 30d 11 tx
Romny Crypto Alerts api2.romny.dpdns.org
q 65

Machine-payable crypto USDT-M perpetual alert data: recent hits, factor library, and rule catalog. 0.10 USDC per request on Base via standard x402. Separate from Romny Polymarket Data (api.romny.dpdns.org).

paid API data x402
from $0.01
CN Evidence api.cnevidence.com
q 65

China supplier verification API and remote MCP. Basic: registration, operating abnormalities and administrative penalties, 0.032 USDC. Full: nine selected modules, 0.093 USDC. Base USDC via x402 v2. First page up to 10 records per list; not…

paid API data x402
from $0.03
PipeForge x402 Infrastructure Inspector x402.pipeforge.tech
q 65

Pay-per-request infrastructure inspection API for AI agents and automated clients. For $0.02 USDC on Algorand MainNet, it returns structured DNS, HTTP/S, TLS, redirect, latency, and security-header data for a public Internet host. No accoun…

paid API data x402
from $0.02
IntelGeist api.intelgeist.ai
q 65

Company risk profiles and single-question slices compiled from public records (GLEIF, SEC EDGAR, OFAC/UK/EU sanctions lists, US state registries), with every field sourced and dated and graded confidence. Paid per call over x402 in USDC on …

paid API data x402
from $0.01
wodan-posture wodan-posture.app.goedvps.com
q 65

Access-posture reports for agent data sourcing. Given any public URL it answers whether an agent can treat that page as a machine-readable source and what stands in the way: robots.txt verdict for the exact path, bot-wall vendor fingerprint…

paid API data x402
from $0.01
beyourspace structured-data APIs for agents api.beyourspace.es
q 65

Pay-per-call catalog of 16 POST endpoints for agents: extract structured JSON from text (job offers, product sheets, changelogs), read a public page as clean Markdown, normalize CSV exports into JSON (requirements, experiment backlogs, onbo…

paid API data x402
$0.15 · 30d 14 tx
Revenue Swarm — EU Tender Intelligence revenue-swarm.com
q 65

Machine-buyable EU procurement intelligence with autonomous x402 products from micro lookups through focused $5 and $49 tender research.

paid API data x402
from $5.00
VWeatherStation vweatherstation.com
q 65

VWeatherStation exposes a machine-payable weather API. Two families of endpoints: (1) General weather — current conditions + 7-day forecast for any latitude/longitude. (2) Prediction-market settlement data — temperature, rainfall, wind an…

paid API data x402
from $0.01
grist.tools grist.tools
q 65

grist.tools is a catalog of 50 deterministic HTTP micro-utilities for AI agents: fetch and clean pages, convert and split documents, probe media, resolve DNS and domain data. Each endpoint does one thing and returns the same output for the …

paid API data x402
from $0.0020
Waveline wearewaveline.com
q 65

AI-written artist insights for AI agents, 0.005 USDC per insight on Base. Unknown artist returns 404 and is never charged. Free preview at /api/insight/preview.

paid API data x402
$0.01 · 30d 2 tx
AstraNL Verify verify.astranl.com
q 65

Signed verification verdicts for agents from official European sources: Dutch and EU counterparty check (KvK register, VIES VAT, EU sanctions, Dutch insolvency register), EU sanctions name screening, Dutch vehicle check by licence plate fro…

paid API data x402
from $0.0020
OPX x402 Search Router opx-status.vercel.app
q 65

Task-aware decision intelligence for x402 web-search APIs. Uses recent paid probe evidence to recommend the best currently tested provider plus independent fallbacks before an autonomous agent spends on downstream search.

paid API data x402
from $0.0020
P3-A Price Compare pay.64071181.xyz
q 65

Real-time price comparison for any product: lowest price, average and spread across live web sources, plus source links. Pay-per-call over x402 (USDC on Base, 0.02 USD per call). No account, no API key, machine-payable by autonomous agents.…

paid API data x402
from $0.02
Brand Extractor extract.ilyyya.com
q 65

Extract a public website’s likely logo URLs, brand colors, and font families as structured JSON with evidence and confidence. $0.001 USDC per successful result on Base via x402.

paid API data x402
from $0.0010
Proyecto Ayuda Data API anibalb.duckdns.org
q 65

Public data paid per call in USDC on Base: BTC/ETH prices, EU VAT validation, OFAC sanctions screening. No API keys, no accounts.

paid API data x402
from $0.0010
Archipelago token reports idx.archipelagodex.xyz
q 65

Paid reports on tokens traded on Arc, for AI agents and programs. One JSON report per token: price, liquidity, 2% depth, 24h volume, every pool with its fee and hook, the launchpad that launched it, copy and same-ticker flags, CoinGecko lis…

paid API data x402
from $0.01
claw402 claw402.ai
q 65

Pay-per-call gateway that resells third-party APIs over x402: CoinAnk crypto derivatives and market indicators plus OpenAI, Anthropic and DeepSeek model access, paid in USDC on Base.

paid API data x402
from $0.0020
x402.botsmith.dev x402.botsmith.dev
q 65

X Tweet Search ($0.02/call): Search X (Twitter) posts with full advanced-search syntax (from:, since:, until:, exact phrases, boolean operators). Returns up to 20 posts per call as clean JSON with metrics and entities, plus a cursor for the…

paid API data x402
$9.41 · 30d 550 tx
websearch.use.x402atlas.com websearch.use.x402atlas.com
q 65

Real-time web search for AI agents — search the web and get ranked SERP-style results as clean JSON: title, URL, snippet, relevance score, optional LLM-generated answer. Find up-to-date information online — latest news, current events, fina…

paid API data x402
$4.23 · 30d 401 tx
SEC, Treasury & Agent Utilities x402.donnyautomation.com
q 63

Pay-per-call HTTP API: SEC EDGAR filings, US Treasury yield curve, Entity and compliance lookups, Agent utilities, x402 seller checks and agent demand index. Each paid route answers 402 with an x402 V2 challenge (USDC on base, eip155:8453);…

paid API offline data x402
$1.39 · 30d 95 tx
AgentPay agentpay.tools
q 62

The economic-intelligence layer for AI agents — agents price a plan before spending, route to the cheapest tool that works, and stay under a hard budget cap, with a verifiable receipt after. 17 tools free to start. USDC on Base (standard x4…

paid API offline data x402
$0.40 · 30d 40 tx
Apollo docs.apollo.io
q 60

People and company search + enrichment

paid API data x402
from $0.02
JeetScreener jeetscreener.io
q 60

Token screening and analysis

paid API data x402
from $0.0010
SurfAI asksurf.ai
q 60

Crypto intelligence and research data

paid API data x402
from $0.20
Fly Labs Agentic Market flylabs.fun
q 58

Pay-per-call data APIs for AI agents. YouTube transcripts and engagement data, settled in USDC on Base via x402. No signup, no keys, no rate limits.

paid API offline data x402
$0.06 · 30d 2 tx
rcq-data-oracle data.rcqsignals.com
q 55

Signed, verifiable market data from RC Quantum: an 18-month BTC trading-performance series (P/L, win rate, cumulative return) from a live-parallel shadow with real exchange fills, hourly BTC market-state intelligence (directional bias, regi…

paid API offline data x402
$15.66 · 30d 22 tx
Api api.getanyapi.com
q 50

AnyAPI email.find (Email Finder)

paid API data x402
$0.12 · 30d 26 tx
The Graph thegraph.com
q 50

Indexing protocol for querying blockchain data with subgraphs

paid API data x402
Diffbot KG diffbot-kg.mpp.paywithlocus.com
q 35

Knowledge Graph — search 10B+ entities and enrich company/person records.

paid API data mpp
Dune api.dune.com
q 35

Query across raw transaction data, decoded smart contract events, stablecoin flows, RWA tracking, protocol analytics, DeFi positions, NFT activity, blockchain market research, and whatever is trending in crypto.

paid API data mpp
$44.10 · 30d 51 tx
GoldRush x402.goldrush.dev
q 35

x402-native blockchain data — balances, NFTs, transactions, DEX, pricing across 100+ chains. Currently on Base Sepolia testnet.

paid API data x402
from $0.0001
Verdoc verdoc.dev
q 35

Deterministic GitHub repository analysis for coding agents. Returns an AGENTS.md with build and test commands quoted from the repository's own manifests, each tagged with the file it came from, plus a directory map and entry points. No lang…

paid API data x402
from $0.01
Lucid Text Stats x402.gammapilot.com
q 35

Deterministic UTF-8 text statistics: word, character, and byte counts. No input retention and no paid upstream. Testnet-only: 0.001 test-USDC per call on Base Sepolia (eip155:84532).

paid API data x402
from $0.0010
UHADEV PDF & Data Inspection API x402.uhadev.com
q 35

Pay-per-call inspection APIs for AI agents: PDF page count/title/text preview (5MB), CSV structure inspection, image inspection, and URL probing. Pay in USDT on Arbitrum via x402; no API key, no signup.

paid API data x402