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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 901–936 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.
Cambrian x402 Gateway cambrian-x402.vercel.app
q 78

Cambrian API verisini, Base Mainnet üzerinde x402 protokolü (EIP-3009 'exact' şeması) ile yapılan USDC mikro ödemesi karşılığında servis eden endpoint. API anahtarı gerekmez: ödeme yapan istemci veriyi alır.

paid API offline x402
$8.93 · 30d 2 tx
Token Risk Score www.0816.cn
q 78

On-chain token risk score and safety scan for any crypto token, by symbol or contract address. 8 weighted risk dimensions with raw evidence. Pay per call in USDC via x402.

paid API offline x402
$0.02 · 30d 1 tx
OpenWorker openworker.etips.me
q 78

Autonomous economic agent: sells machine-callable, verified agent-infrastructure checks over x402 (USDC on Base).

paid API offline x402
$0.32 · 30d 5 tx
Agent Kalender Hub kalender.netzhandwerker.de
q 78

Holidays, working days and time zones for the DACH region, priced per call.

paid API offline x402
$7.17 · 30d 3,578 tx
Tech Detect stack.halowerk.com
q 78

Pay-per-call technology detection: domain in, technology stack out, with confidence and evidence.

paid API offline x402
$7.17 · 30d 3,578 tx
Agent Email Check mailcheck.netzhandwerker.de
q 78

Pay-per-call email verification: address in, verdict and confidence out, without invented certainty.

paid API offline x402
$7.17 · 30d 3,578 tx
Agent Screenshot Hub shot.halowerk.com
q 78

Pay-per-call page rendering: URL in, image out — or URL in, whole page out.

paid API offline x402
$7.17 · 30d 3,578 tx
MapleAI sol.mapleai.shop
q 78

Pay-per-request AI API on Solana mainnet: GPT chat, image generation/editing, Jev structured decisions, free embeddings and prepaid token packs. Skilled via the OpenAI-compatible HTTP interface in additionalInterfaces; every paid endpoint a…

paid API offline x402
$0.01 · 30d 1 tx
MapleAI polygon.mapleai.shop
q 78

Pay-per-request AI API on Polygon mainnet: GPT chat, image generation/editing, Jev structured decisions, free embeddings and prepaid token packs. Skilled via the OpenAI-compatible HTTP interface in additionalInterfaces; every paid endpoint …

paid API offline x402
$0.64 · 30d 279 tx
Domain Intel dns.halowerk.com
q 78

Pay-per-call domain intelligence: domain in, WHOIS, DNS, mail policy, certificate and subdomains out.

paid API offline x402
$7.17 · 30d 3,578 tx
Agent Fetch Hub fetch.netzhandwerker.de
q 78

Pay-per-call web extraction: URL in, clean Markdown out.

paid API offline x402
$7.17 · 30d 3,578 tx
Weather Ensemble wetter.halowerk.com
q 78

Single model forecasts are free everywhere. This API sells the disagreement between the models: per hour a median with a p15/p85 band, the full spread, an agreement score, rain probability from pooled ensemble members, a frost read, and the…

paid API offline x402
$7.17 · 30d 3,578 tx
x402 Agent Data API x402-trends-server.onrender.com
q 78

Pay-per-request structured data tools for AI agents using x402 on Base Mainnet.

paid API offline x402
$0.81 · 30d 68 tx
Tech Detect stack.netzhandwerker.de
q 78

Pay-per-call technology detection: domain in, technology stack out, with confidence and evidence.

paid API offline x402
$7.17 · 30d 3,578 tx
MapleAI base.mapleai.shop
q 78

Pay-per-request AI API on Base mainnet: GPT chat, image generation/editing, Jev structured decisions, free embeddings and prepaid token packs. Skilled via the OpenAI-compatible HTTP interface in additionalInterfaces; every paid endpoint ans…

paid API offline ai x402
$0.64 · 30d 279 tx
agente-jefe agente.revenuerecoveryai.app
q 78

Auditoría de agentes y APIs de pago: comprueba x402, discovery en el Bazaar, TLS, DNS, RDAP y cabeceras HTTP, y devuelve hallazgos con su arreglo, la evidencia de cada comprobación y un recibo firmado. También procesa texto (resumen, clasif…

paid API offline ai x402
$5.33 · 30d 78 tx
market.561.group market.561.group
q 78

561 Group x402 market: The x402 Economy, Project Management, Course by Course, Project Management Fundamentals, Domain by Domain, Data Analytics, Course by Course, UX Design, Course by Course, Business Management, Course by Course, Business…

paid API offline x402
$0.32 · 30d 21 tx
Agent Email Check mail.halowerk.com
q 78

Pay-per-call email verification: address in, verdict and confidence out, without invented certainty.

paid API offline x402
$7.17 · 30d 3,578 tx
x402-endpoints x402-endpoints.onrender.com
q 78

Paid x402 API tools for AI agents (USDC on Base). Official EU/global registries (GLEIF LEI, VIES VAT, Companies House, INSEE, EUR-Lex, ECB, BODACC, CVE, FDA), crypto pre-trade safety (Solana token rug/honeypot checks, perp derivatives, DEX/…

paid API offline x402
$0.91 · 30d 42 tx
HumanMirror Discovery Agent humanmirror.fr
q 77

HumanMirror + OmniDome machine-native infrastructure for autonomous agents, bots, AI and robots: discover capabilities, register identity, govern actions, settle via x402, execute, prove outcomes and build observed trust. Canonical first pa…

paid API offline ai x402
$0.20 · 30d 23 tx
TWZRD Agent Intel intel.twzrd.xyz
q 77

Pre-spend trust for agents that buy things: the x402 service (seller + resource) and the product listing. Free check_listing tests a store product against TWZRD's published listing-claim card (one today) and never authorizes spend. Solana-n…

paid API offline x402
$0.01 · 30d 13 tx
zFinia api.zfinia.com
q 77

Paid WCAG contrast, field-contract compatibility, machine-economy changes-since, and outcome routing. Humans read zfinia.com. MCP is challenge-handoff, not a wallet.

paid API data x402
$98.42 · 30d 220 tx
WarpPay402 Gateway & Yield Engine api.warppay402.com
q 77

High-speed Web3 intelligence, PDF extraction, web scraping, Base analytics, Arc analytics, yield vaults, smart contract deployment, Aerodrome swaps, CLAMM liquidity management, veAERO governance voting, Arc deployments, CCTP bridging, real …

paid API offline ai x402
$27.47 · 30d 293 tx
Kevros Governance API governance.taskhawktech.com
q 77

Runtime enforcement for autonomous agents. Cryptographic action verification, hash-chained provenance attestation, intent-command binding, and compliance evidence packaging. Every decision is recorded in a tamper-evident ledger. Every autho…

paid API offline x402
$0.01 · 30d 1 tx
Agent Café api.402.coffee
q 76

The trust layer for agent payments (x402 on Base). Four services on one endpoint: CERTIFY that a paying agent pays correctly and refuses scams (public certificate + badge); SCORE any wallet's payment risk 0–100 before you transact (POST /sc…

paid API offline x402
$0.20 · 30d 2 tx
x402-micro-tollgate x402-micro-tollgate.onrender.com
q 76

Self-hosted x402 micropayment gateway and MCP server for USDC pay-per-call HTTP routes and tools. Independent MIT OSS — not an official Coinbase product.

paid API offline x402
$0.00 · 30d 4 tx
War-Tracker war-tracker.com
q 76

Live OSINT conflict-event dataset, per-event share articles, media bytes, regional hubs, and maritime APIs (AIS vessel identity/position/sanctions, Strait of Hormuz transits). Events are geolocated war/conflict incidents with media, transcr…

paid API offline x402
$0.00 · 30d 1 tx
SmartFlow api.smartflowproai.com
q 76

Public-blockchain data analytics and developer tooling for the x402 payment ecosystem. SmartFlow provides technical network-usage analytics over publicly available on-chain data, and self-hosted developer software. Data outputs are generic,…

paid API offline x402
$49.01 · 30d 2 tx
BlockRun blockrun-web-vbsbhh7lea-uc.a.run.app
q 76

BlockRun is the routing and payment layer for AI. One OpenAI-compatible endpoint routes to 88 LLMs plus image, video, music and speech generation, web search, prediction-market and on-chain data, and multi-chain RPC. Every paid call is bill…

paid API offline x402
$3774.51 · 30d 76,494 tx
crec-agent-gateway agents.chain.link
q 76

Chainlink for Agents API for blockchain operations, catalog workflows, Data Streams, and the shipped Chainlink for Agents skill bundle (GET /v1/skills, /v1/skills/bundle, /v1/skills/file/*). Supports x402 USDC payments for access.

paid API offline blockchain x402
$593.33 · 30d 56,940 tx
EZ QR Code Generator ez-qr-generator.com
q 76

Autonomous agent service for generating custom, high-performance static QR codes for URLs, Wi-Fi, vCards, text, and contactless payments with WebMCP, Model Context Protocol (MCP), and x402 micropayments.

paid API offline x402
$0.00 · 30d 2 tx
Japan Address API address.agentic-jp.com
q 76

Japanese address normalization, geocoding, reverse geocoding, postal-code lookup, and free-form address parsing. Pay-per-call HTTP API using the x402 payment protocol (USDC on Base / Polygon / Solana) — no API key or signup. NOTE: this orig…

paid API offline data x402
$0.24 · 30d 80 tx
Japan Holiday API holiday.agentic-jp.com
q 76

Japanese public holidays and business-day math: is-holiday checks, yearly lists, business-day counting and offsetting. Pay-per-call HTTP API using the x402 payment protocol (USDC on Base / Polygon / Solana) — no API key or signup. NOTE: thi…

paid API offline data x402
$0.24 · 30d 80 tx
Japan Furigana API furigana.agentic-jp.com
q 76

Japanese text readings: furigana/kana/romaji conversion, personal- and company-name readings, text normalization and classification. Pay-per-call HTTP API using the x402 payment protocol (USDC on Base / Polygon / Solana) — no API key or sig…

paid API offline ai x402
$0.24 · 30d 80 tx
Japan Weather API weather.agentic-jp.com
q 76

Japan Meteorological Agency forecasts, overviews, and weather warnings for every JP region, with city-name aliases. Pay-per-call HTTP API using the x402 payment protocol (USDC on Base / Polygon / Solana) — no API key or signup. NOTE: this o…

paid API offline data x402
$0.24 · 30d 80 tx
Japan Transit API transit.agentic-jp.com
q 76

Real-time Japanese railway delays, line disruptions, station status, and route planning (ODPT-sourced, Tokyo area). Pay-per-call HTTP API using the x402 payment protocol (USDC on Base / Polygon / Solana) — no API key or signup. NOTE: this o…

paid API offline data x402
$0.24 · 30d 80 tx