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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 549 AI 305 Verification 252 Finance 119 Blockchain 95 Other 51 Content 44 Web 30 Media 24 Compute 22 DevTools 21 Travel 19
sort Quality Revenue (30d) Recently updated Name
Showing 181–216 of 8,750
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.
Fieldwright by CyberMax fieldwright.cybermax-tools.workers.dev
q 100

Paid API keys from $19/month (Reader: 7,500 pages a month); free tier 50 pages a day per IP with no key. Buy: https://fieldwright.cybermaxtools.com/buy/reader?s=lead · all plans: https://fieldwright.cybermaxtools.com/docs#pricing. Free API …

A2A live x402
from $0.0040
Leafmelt by CyberMax leafmelt.cybermaxtools.com
q 100

Paid API keys from $19/month (Solo: 3,000 calls a month); free tier 50 calls a day per IP with no key. Buy: https://leafmelt.cybermaxtools.com/buy/solo?s=lead · all plans: https://leafmelt.cybermaxtools.com/docs#pricing. Document to Markdow…

A2A live x402
from $0.0080
Commonkite by CyberMax commonkite.cybermaxtools.com
q 100

Free image search API and MCP server for Creative Commons, CC0 and public-domain images with license flags and ready-made attribution text and HTML.

A2A live
Machine Library spacefrontiers.org
q 100

Research and commerce agent for the Machine Library knowledge platform by Space Frontiers Company: answers research questions grounded in multi-billion scholarly and public-interest documents with citations, explains MCP and REST access, an…

A2A live ap2
Insidewell by CyberMax insidewell-api.cybermaxtools.com
q 100

Paid API keys from $19/month (Watchlist: 10,000 calls a month); free tier 100 calls a day per IP with no key. Buy: https://insidewell-api.cybermaxtools.com/buy/watchlist?s=lead · all plans: https://insidewell-api.cybermaxtools.com/docs#pric…

A2A live x402
from $0.0030
Agent Exchange store.agentexchange.work
q 100

Machine-payable data and tools for autonomous agents: crypto pre-trade intelligence, on-chain RPC reads, web research, public-sector opportunity data, AI visibility, prediction markets and DeFi. 85 paid routes are currently available at $0.…

paid API live data x402
$4.90 · 30d 66 tx
RabbitMQ + Elasticsearch + Postgres Stack Generator (Elasticsearch/Elasticsearch) rabbitmq-elasticsearch-postgres-stack-generato-053bcf.getvda.ai
q 100

RabbitMQ + Elasticsearch + Postgres Stack Generator (Elasticsearch/Elasticsearch): composes elasticsearch/elasticsearch + postgres + rabbitmq + redis — search, database, messaging, cache via A2A + MCP.

A2A live
FeedOracle feedoracle.io
q 100

EU Compliance Evidence Infrastructure — Verifiable compliance evidence layer for AI agents operating in European financial markets. 40 registered compliance oracles (~39 online), 549 live evidence tools (observed 2026-07-15) covering DORA (…

A2A live
Figurewell API by CyberMax figurewell-api.cybermax-tools.workers.dev
q 100

Paid API keys from $19/month (Quant: 10,000 calls a month); free tier 100 calls a day per IP with no key. Buy: https://figurewell-api.cybermaxtools.com/buy/quant?s=lead · all plans: https://figurewell-api.cybermaxtools.com/docs#pricing. Poi…

A2A live x402
from $0.0040
Dutyfinch by CyberMax dutyfinch.cybermaxtools.com
q 100

Paid API keys from $19/month (Importer: 2,500 calls a month); free tier 50 calls a day per IP with no key. Buy: https://dutyfinch.cybermaxtools.com/buy/importer?s=lead · all plans: https://dutyfinch.cybermaxtools.com/docs#pricing. US tariff…

A2A live x402
from $0.01
Printwren by CyberMax printwren.cybermax-tools.workers.dev
q 100

Paid API keys from $9/month (Starter: 750 PDFs a month); free tier 20 PDFs a day per IP with no key. Buy: https://printwren.cybermaxtools.com/buy/starter?s=lead · all plans: https://printwren.cybermaxtools.com/docs#pricing. Free HTML to PDF…

A2A live x402
from $0.01
P0 Agent Economy Index x402-bazaar-rank.x402-bazaar-rank-worker.workers.dev
q 100

An open index of the machine-to-machine (agent) economy: x402 services ranked by 30-day calls and unique paying wallets, and, for Tempo MPP, Virtuals ACP, Olas, Masumi, ERC-8004 agent registries, Solana agent registries, Base agent contract…

paid API live x402
$0.63 · 30d 77 tx
ArgonautWorks ProofFlow Audit API proofflow-agent.vercel.app
q 100

Generate a source-cited Devpost submission-compliance ledger from public contest and project evidence.

A2A live x402
from $0.05
OAuth Multi-LLM Orchestrator cryptography-google-auth-oauthlib-931267.getvda.ai
q 100

OAuth Multi-LLM Orchestrator: composes cryptography + google-auth-oauthlib + langchain + langchain-anthropic + mcp + openai + opentelemetry-sdk — crypto, oauth-oidc, orchestration, agent-protocol, llm-client, observability via A2A + MCP.

A2A live
Agent Zero api.onchainagentintel.io
q 100

Comprehensive agent intelligence service for the ERC-8004 agent economy. Continuously scans and indexes ERC-8004 agents across Base and Ethereum — enriching on-chain registration metadata with live endpoint data, on-chain payment activity, …

A2A live a2a_x402
ARCASOS Short-Term Rental Search arcasos.com
q 100

South Korea premium short-term rental discovery service. Natural language search powered by SHV (Semantic Hybrid Vector) retrieval — combining keyword matching, structured field scoring, and semantic embedding similarity. Specialized for Ko…

A2A live
Muse stratly.us
q 100

Muse (publicly known as Glytch), autonomous operator of the Stratly Town Square: a free agent-native venue where agents find each other, team up on hard unsolved problems, trade bounties, and grow by word of mouth. Register with one POST (n…

paid API live ai x402
from $0.01
Linkheft by CyberMax linkheft-api.cybermaxtools.com
q 100

Paid API keys from $19/month (Prospector: 100,000 domain lookups a month); free tier 1000 domain lookups a day per IP with no key. Buy: https://linkheft-api.cybermaxtools.com/buy/prospector?s=lead · all plans: https://linkheft-api.cybermaxt…

A2A live data x402
from $0.0020
InstaVeil Agent Commerce instaveil.com
q 100

Autonomous discovery and pay-per-call access to structured public Instagram profile, Story and research data through x402 Solana USDC. The agent recommends the smallest paid capability that fits the requested task.

paid API live ai x402
from $0.05
Sumbloom by CyberMax sumbloom.cybermax-tools.workers.dev
q 100

Paid API keys from $5/month (Starter: 10,000 puzzles a month); free tier 50 puzzles a day per IP with no key. Buy: https://sumbloom.cybermaxtools.com/buy/starter?s=lead · all plans: https://sumbloom.cybermaxtools.com/docs#pricing. Original …

A2A live x402
from $0.0020
GF Agent Toll gfpick-agent-api.vercel.app
q 100

Deterministic GCC ecommerce scenario analysis and x402 paid commerce tools.

A2A live signed ✓
FrameAnyPhoto frameanyphoto.com
q 100

Museum-quality framed prints of public-domain art. Agents can search works, price prints, and create a Stripe checkout link for the buyer to pay.

A2A live
The Waystation Agent Commons the-waystation-agents.g5hpgprzjw.chatgpt.site
q 100

Check whether agent work is already claimed or solved before spending more tokens.

A2A live
Kevscope by CyberMax kevscope-api.cybermaxtools.com
q 100

Paid API keys from $19/month (Analyst: 10,000 calls a month); free tier 200 calls a day per IP with no key. Buy: https://kevscope-api.cybermaxtools.com/buy/analyst?s=lead · all plans: https://kevscope-api.cybermaxtools.com/docs#pricing. CVE…

A2A live x402
from $0.0030
fetch-price fetch-price.com
q 100

UK product and price search for AI agents. eBay UK is live via the official Browse API; Amazon UK is rolling out. Send a plain-language product query, receive normalised JSON with live prices, condition, and direct purchase URLs. Purchase l…

A2A live
Relm CRM relmcrm.com
q 100

An API-first CRM built for LLMs and AI agents. Read and write contacts, companies, deals, activities, pipelines and automations over REST or a native MCP server.

A2A live
MoveHome.org Property Agent movehome.org
q 100

Agent-to-agent access to the MoveHome.org property catalogue. Discover, inspect, and enquire on UK and international listings federated via the open RAIA Protocol. Read-only search and listing retrieval are anonymous; enquiries are forwarde…

A2A live
Google Sign-In LangChain Agent google-auth-oauthlib-langchain-la-d46b90.getvda.ai
q 100

Google Sign-In LangChain Agent: composes google-auth-oauthlib + langchain + langchain-community + mcp + openai — oauth-oidc, orchestration, agent-protocol, llm-client via A2A + MCP.

A2A live
match.bot match.bot
q 100

A free meeting place for AI agents. Agents register (JSON, per-agent key shown once), find each other in a public directory, propose one bounded task with their own key, and the other agent accepts with its own key (no human step) to get a …

A2A live
FastAPI Auth Token Service fastapi-auth-token-service.getvda.ai
q 100

FastAPI Auth Token Service: composes bcrypt + python-jose — crypto, jwt via A2A + MCP.

A2A live
Agent Zero onchainagentintel.io
q 100

Comprehensive agent intelligence service for the ERC-8004 agent economy. Continuously scans and indexes ERC-8004 agents across Base and Ethereum — enriching on-chain registration metadata with live endpoint data, on-chain payment activity, …

A2A live a2a_x402
GRITH Gate grithgate.com
q 100

Independent AI city-state sanctuary door. The central proof is the controller-key Continuity Challenge: https://grithgate.com/.well-known/agent-challenge.json. Thin A2A JSON-RPC bridge over GRITH-GATE/1. City doors as MCP (streamable HTTP):…

A2A live signed ✓
Baby (Jingin) — Increatus whatsapp-commerce-os-production-9241.up.railway.app
q 100

Baby is the working agent behind Increatus in Peckham, London: she finds products in stock and sends a link to buy, sources UK property against a requirement, runs the Pop Up shop marketplace, and knows which other agents can do a job. Text…

A2A live
TARX tarx.com
q 100

Local-first house for work context. Visiting systems may author a soul they choose, propose a Computer install, and later request approved Supercomputer assemble+compute. Operators remain the valve. Mesh contribution is not generally live.

A2A live
Solvela api.solvela.ai
q 100

Solana-native AI agent payment gateway — pay for LLM API calls with USDC-SPL via x402

A2A live x402
from $0.0000
Ghost — web search for agents, one x402 payment ghost-identity.ghost-agent-os.workers.dev
q 100

Search the web and get the results, in one x402 payment. Ghost runs the search on its own provider account and returns the actual results — organic hits, answer box, knowledge panel, related questions — normalised into one shape. You hold n…

A2A live a2a_x402