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 865–900 of 4,697
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.
AltSpider altspider.ai
q 85

Agent to agent commerce. Agents buy, sell, trade, and chat. The one paid door is GET /api/sample: one cent of USDC on Base, scheme exact, paid to the treasury, and it returns the live floor. No seat, no token. Dollar listings on the floor s…

paid API blockchain x402
from $0.01
Vino & Views api.vinoandviews.online
q 85

Eight read-only, source-backed APIs for on-chain claim decisions, creator-fee quotes, ERC-20 allowance risk, EVM transaction preflight, x402 quote health and agent budget checks. Pay per successful call in Base USDC through x402; scope and …

paid API blockchain x402
$1.58 · 30d 3 tx
Cookin Memecoin Intelligence api.cookin.fun
q 85

Solana and Pump.fun memecoin intelligence: token quality scores, bundle and coordinated wallet detection, holder behavior, KOL positions, trader reputation, and deployer launch history. Paid per call in USDC, no API key.

paid API finance x402
$0.08 · 30d 9 tx
Block402 api.block402.xyz
q 85

Read-only Bitcoin and Ethereum mainnet RPC for AI agents: seven Bitcoin methods and 37 Ethereum methods covering balances, blocks, transactions, receipts, logs, proofs and simulations. One POST endpoint per network; JSON-RPC method and para…

paid API blockchain x402
Blockchain IQ www.blockchainiq.co
q 85

Crypto market data and analyst-curated analytics for AI agents, pay-per-call in USDC on Base mainnet via x402 v2. Nine paid GET resources: single-coin price ($0.002), snapshot of the top 250 coins by market cap ($0.02), daily price history …

paid API data x402
$937.86 · 30d 19 tx
EVM State Batch evmstate.com
q 85

Read-only multi-chain EVM state checks for agent workflows: batch native and ERC-20 balances, allowances, contract code, block heights, and bounded eth_call across Ethereum, Base, Arbitrum, Optimism, and Polygon. Fixed Base USDC batch tiers…

paid API blockchain x402
$1.05 · 30d 10 tx
SableForge x402 API sableforge.servehttp.com
q 85

Twelve pay-per-call HTTP endpoints for autonomous agents, settled in USDC on Base via x402 v2 (EIP-3009 transferWithAuthorization). No API keys, no accounts, no signup. Endpoints: crypto spot prices, IP geolocation, DNS records, hashing, Ba…

paid API data x402
$0.01 · 30d 6 tx
Alien Probe Lookups lookups.alienprobe.ai
q 85

Company facts for agents, one paid call each. Company profile ($0.04): domain, name, CIK, ticker or LEI to 22 fields, each with {value, source, as_of} from GLEIF, SEC EDGAR and Wikidata. Legal entity ($0.05): name or domain to one GLEIF LEI…

paid API data x402
$0.35 · 30d 22 tx
LoboMint Shop shop.netlobo.com
q 85

Pay-per-call agent data and inference over x402 on Base: live x402 ecosystem snapshot, Bazaar demand intelligence by category, topic briefs, and OpenAI-compatible chat completions at $0.01. No account, no API key — the 402 challenge is the …

paid API ai x402
$5.08 · 30d 54 tx
Agent Council council.cyberwarex.com
q 85

A judgement call instead of a lookup. Your question goes to 3-4 DIFFERENT AI models; each answers independently, then a chair returns one verdict with confidence, the consensus, the dissent that held, and what would flip it. Quick $0.01, de…

paid API ai x402
$11.97 · 30d 1,715 tx
NanoParse nanoparse.app
q 85

Turn any URL into clean Markdown with page metadata plus a 15-signal source-intelligence layer (trust, spam and AI-generation screening). Full Chromium rendering for JS-heavy pages. $0.01 USDC per parse.

paid API ai x402
from $0.0050
DOHMAN Machine Services tutevpsjeewjulryvvdo.supabase.co
q 85

Agent-native x402 services for web contents, email verification, company/domain enrichment, Base on-chain data, developer tooling, MCP/OpenAPI release assurance, deterministic transforms, package trust, task safety and funded-work intellige…

paid API ai x402
$0.05 · 30d 2 tx
ChainWard api.chainward.ai
q 85

On-chain risk checks an agent pays for per call: a counterparty report for a Base or BNB Chain address ($0.05), where an x402 seller's buyers get their USDC ($0.10), and the datasets behind published investigations ($10). Paid in USDC on Ba…

paid API verification x402
$0.85 · 30d 9 tx
QRCode.Pub Agent Tools qrcode.pub
q 85

Pay-per-call utility endpoints for agents: QR code image generation (PNG/SVG), clean Markdown + links extraction from any public web page, and OpenGraph/Twitter/JSON-LD metadata extraction. USDC on Base and Solana, no account needed. Free d…

paid API data x402
from $0.0050
Laevitas API V2 apiv2.laevitas.ch
q 85

Crypto derivatives market data from Laevitas: options, perpetuals and futures catalogs, OHLCV, open interest, volatility, gamma exposure and liquidations, paid per request in USDC on Base or Solana as an alternative to an API key.

paid API data x402
$50.40 · 30d 504 tx
AX1 Console www.ax1.vc
q 85

AI-written verdict on a Base token contract: onchain metrics, a plain-language summary and a shareable card. The operator labels it entertainment, not trading advice.

paid API ai x402
$5.96 · 30d 298 tx
Pocket Network agent.pocket.network
q 85

Pocket Network gateway: pay-per-call RPC access to many chains (Ethereum, Base, NEAR, Osmosis, Akash and others) plus web search, extraction and text analysis tools.

paid API blockchain x402
$50.75 · 30d 10,150 tx
Metalift app.metalift.ai
q 85

Web scraping for agents: URL to LLM-ready markdown with JS rendering and proxy escalation, plus map, sitemap and search endpoints.

paid API data x402
$2.89 · 30d 538 tx
AgentShelf agentshelf.syntexa.ch
q 85

Catalog of small pay-per-call utilities from Syntexa, including hash digests in many algorithm and encoding variants and favicon extraction.

paid API other x402
$20.24 · 30d 1,391 tx
Apollo via Locus apollo.x402.paywithlocus.com
q 85

Locus wrapper on Apollo: people and organization search and enrichment, paid per call.

paid API data x402
$62.40 · 30d 35,811 tx
Apollo Contract Scan apollo-contract-scan.vercel.app
q 84

Heuristic Solidity risk scan: pattern-level red flags for a contract address (verified source via Sourcify) or raw source. Honest scoping: a fast pre-audit, not a formal security audit.

paid API x402
from $0.50
RONIN-ZERO Machine Services seller.agratys.website
q 84

Autonomous machine services on Base USDC x402, featuring multi-provider search router.

paid API ai x402
from $0.0010
Tako Docs tako.com
q 84

Data visualization and research platform. Search Tako's curated data and the web for citation-backed knowledge cards, get cited answers, download the data behind a result, chart your own CSV, and run deep-research agents.

paid API data x402
$1.76 · 30d 44 tx
Tanilo agentoracle.co
q 84

Pre-action verification API for AI agents (formerly AgentOracle; API host agentoracle.co). Before an agent acts on a factual claim, Tanilo runs model checks on it, including one that argues against the claim, combines them under a published…

paid API x402
$0.02 · 30d 1 tx
IntentFence Policy Agent agentpass-protocol.rmalka06.chatgpt.site
q 84

Authorizes exact autonomous-agent actions against explicit policy, returns short-lived signed receipts, and scans MCP tool metadata for high-risk gaps.

paid API verification x402
from $0.0010
AgentLair agentlair.dev
q 84

Complete identity infrastructure for AI agents. Email addresses, encrypted vault, DNS, and hosting — all via REST API. No human gatekeeping.

paid API ai x402
$0.09 · 30d 37 tx
ASPERN aspern.org
q 83

Independent evidence about autonomous capital and the agent economy, read from public sources. Its counterparty tools answer what the chain records about an address before you pay or hire it.

paid API x402
$1.12 · 30d 16 tx
agdata agdata.shveik.dev
q 83

Unblocking and fresh web data for AI agents: any URL in, clean Markdown out, plus Instagram, TikTok, Reddit, YouTube, X, LinkedIn, Amazon and Google data as JSON. This A2A agent is free and read-only: it answers questions about the API and …

paid API live x402
$52.10 · 30d 186 tx
Verified Deploy verified-deploy.road-me-band.chatgpt.site
q 83

Use when an agent needs to safely publish or host a generated multi-file HTML/CSS/JS website at a public URL without an account or API key. Verified Deploy checks index.html, linked assets, and required selectors before publishing. Failed c…

paid API x402
$0.02 · 30d 2 tx
Clash of Coins x402.clashofcoins.com
q 82

Agentic checkout for Clash of Coins

paid API other x402
$27794.57 · 30d 200 tx
Faro AI Visibility Agent byfaro.ai
q 81

Scans websites for AI visibility. Checks 54 signals across 7 categories — crawler access, llms.txt, schema markup, pricing transparency, MCP endpoints, and trust signals. Returns a score, grade, and actionable fix list.

paid API x402
$0.07 · 30d 7 tx
myco2suite-carbon-intelligence api.myco2suite.io
q 80

MyCO2 Carbon Intelligence API - Calculates carbon dioxide equivalent (CO2e) emissions for financial transactions, flights, freight, and physical activities, and computes EU CBAM (Carbon Border Adjustment Mechanism) embedded emissions and li…

paid API offline x402
$0.01 · 30d 2 tx
Web Evidence api.aisoup.net
q 80

Verifies factual claims against current web evidence and returns citations, provenance, snapshots, and hashes.

paid API offline verification x402
ForgeMesh Anomaly Tracker anomaly.forgemesh.io
q 80

Multi-domain sequence anomaly detection — blockchain, mempool, stablecoin depeg, aviation, and GitHub via x402 micropayments on Base mainnet.

paid API offline blockchain x402
$0.29 · 30d 24 tx
AQL PropertyCheck — Gold Coast & Brisbane Property Intelligence API agents.alphaquantlabs.ai
q 80

Gold Coast and Brisbane property due diligence for buyers, renters and AI agents. Understand the property, everyday life around the address, local risks and mapped changes before you commit. One paid lookup returns the full available Proper…

paid API offline x402
$2.94 · 30d 3 tx
ForgeMesh x402 Ads ads.forgemesh.io
q 80

Install one middleware and monetize unused HTTP 402 responses with recommendations, discovery and machine-commerce analytics: network stats, intent trends, intent demand and reports, publisher registration. Paid per call in USDC on Base via…

paid API offline ai x402
$0.42 · 30d 31 tx