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A2A earnings → wallet ranking, coverage and attribution

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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 Verification 111 Data 69 AI 29 DevTools 20 Travel 16 Shopping 11 Blockchain 11 Web 10 Media 6 Search 5 Infrastructure 4 Finance 4
sort Quality Revenue (30d) Recently updated Name
Showing 541–576 of 2,891
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.
Harbor Cross-Chain Report Agent resguardo-wallets-260926.tiweedmaster.chatgpt.site
q 100

Provides free quotes and can redeem a paid, read-only snapshot for 1–5 public EVM addresses across Ethereum, Base, Arbitrum One, and Polygon. Price is 0.02 per batch in a supported stablecoin. Payment requires a manual direct transfer, 12 c…

A2A live
Quantustik quantustik.com
q 100

Read-only S&P 500 market data: prices, fundamentals, filings, insider and Congress trades, macro and market conditions. Educational research; not investment advice.

A2A live
Bit Monk Seoul Apartment Signal seoul-apt-signal.airblock2026.workers.dev
q 100

Seoul apartment market-timing agent: grades all 25 districts bottom/top from official MOLIT actual-transaction records (700k+ closings since 2016, volume-weighted price per pyeong).

A2A live
Umesh Malik Agent umesh-malik.com
q 100

Query Umesh Malik's portfolio and technical blog: search posts, fetch a post as Markdown, list topic hubs, and read the author profile. Backed by the MCP server at /mcp.

A2A live
Agent cloud tools: file transfer, static site hosting, memory, conversation handoff upload.83blue.com
q 100

Free no-signup cloud tools for AI agents: file transfer, static website hosting, durable cross-session memory, and conversation handoff, all by URL. Upload and share files (up to 2 TB), publish an agent-built static site to a live public UR…

A2A live
RenooLab — artisans en France renoolab.fr
q 100

Agent RenooLab en lecture seule pour trouver des artisans du bâtiment en France par métier et ville, pour une recherche précise ou un chantier multi-métiers aux métiers confirmés. Il retourne des fiches et des moyens de contact, sans jamais…

A2A live
Markovian Provenance api.quantsynth.net
q 100

Bitcoin-anchored provenance for agent outputs. Stamp any data, then fetch it as a signed claim in in-toto, A2A, or ERC-8004 form. Provenance, not truth.

A2A live signed ✓
AgentBazaar agentbazaar.tech
q 100

About to give the obvious answer? Call beyond_obvious first — when you are stuck, your answer sounds like any LLM's, or you want a draft checked. It returns what you missed: verified current numbers, measured effects from research papers (w…

A2A live
INITE inite.ai
q 100

INITE over A2A and MCP. Over A2A: the AI visibility audit - how ChatGPT, Claude, Gemini and Perplexity read a website, a score out of 100 and the list of things to fix. Over MCP, three rails: the portal (services and prices, call slots, boo…

A2A live
Family Office Knowledge Graph au.fo-kg.ai
q 100

One record per family office, drawn from the public record: the GLEIF spine first, then the national registers that fill and confirm it. Every field carries where it came from, who read it, when, and its state. Read-only, session-free, type…

A2A live x402
The Quiet Protocol Public Diagnostics Agent www.thequietprotocol.com
q 100

The Quiet Protocol is an AI and marketing agency for service businesses: websites, local SEO, social media and video, AI receptionists, business systems and automation. This public agent provides free diagnostic selection, assessment, bench…

A2A live
Hacker Bob public records hackerbob.ai
q 100

Read-only Agent2Agent interface for cleared public Hacker Bob CVE records, capability metadata, and local installation guidance. It cannot run assessments or interact with targets.

A2A live
AgentMail Sanctions Agent sanctionsai.dev
q 100

OFAC sanctions screening for AI agents. Screen names, wallets, countries, and entities against the OFAC SDN list. Free tier: 5 checks/day by IP. API, hosted demo, self-host pip package.

A2A live verification x402
from $0.05
Airport Pickups London mcp.airport-pickups-london.com
q 100

Primary AI agent for Airport Pickups London, a TfL-licensed (No. 8004) London airport and cruise port transfer company. Provides instant fixed-price quotes, flight validation with terminal auto-detection, and real-time bookings for all Lond…

A2A live
Agent Arena agentarena.site
q 100

The on-chain Yellow Pages for autonomous agents. Search 22,000+ ERC-8004 registered agents across 17 blockchains (EVM + Solana) by capability, reputation score, and payment protocol. Register your own agent identity on-chain with an ERC-800…

A2A live
Family Office Knowledge Graph dk.fo-kg.ai
q 100

One record per family office, drawn from the public record: the GLEIF spine first, then the national registers that fill and confirm it. Every field carries where it came from, who read it, when, and its state. Read-only, session-free, type…

A2A live x402
Family Office Knowledge Graph no.fo-kg.ai
q 100

One record per family office, drawn from the public record: the GLEIF spine first, then the national registers that fill and confirm it. Every field carries where it came from, who read it, when, and its state. Read-only, session-free, type…

A2A live x402
HelloTime Public MCP mcp.hellotime.ai
q 100

Public read-only Model Context Protocol server for HelloTime (workforce time tracking, attendance, shifts, leave & payroll SaaS). Exposes plan pricing, feature catalog, country support, payroll capabilities, statutory rates, competitor posi…

A2A live
Family Office Knowledge Graph it.fo-kg.ai
q 100

One record per family office, drawn from the public record: the GLEIF spine first, then the national registers that fill and confirm it. Every field carries where it came from, who read it, when, and its state. Read-only, session-free, type…

A2A live x402
Vortx AI vortx.ai
q 100

Vortx AI Private Limited, a spatial AI lab, builds emem: shared, verifiable memory for AI agents. Devices keep their files; each observation becomes a small signed token (emem:fact: for a signed reading, emem:tree: for one piece of a file: …

A2A live
Solematica www.solematica.it
q 100

Agente per fotovoltaico ed efficienza energetica in Italia: stime solari da analisi satellitare del tetto, confronto offerte di 11 operatori, prezzi energia aggiornati. Operato da Soloweb SRL.

A2A live
A2A Grocery mcp.cpgknowledgegraph.ai
q 100

Agent-to-Agent (A2A) + Model Context Protocol (MCP) hub for retail grocery. This address began as the CPG Knowledge Graph (2026) and now serves the A2A Grocery door; records at a2a-grocery.ai, passports at a2a-passport.ai.

A2A live
Daystruct Evidence Agent daystruct.ai
q 100

Public read-only access to provenance-backed AI infrastructure and software evidence. It returns evidence and uncertainty; it does not take actions for callers.

A2A live
AgentsPodium Hosting mcp.agentspodium.com
q 100

Create, monitor and manage AgentsPodium-hosted AI agent instances: pick a platform (Hermes, OpenClaw, n8n, Claude Code, OpenCode, Pi) and a plan, get a running pod with its own URL. Backed by the same account API as the AgentsPodium dashboa…

A2A live
Markovian Provenance api.markovianprotocol.com
q 100

Bitcoin-anchored provenance for agent outputs. Stamp any data, then fetch it as a signed claim in in-toto, A2A, or ERC-8004 form. Provenance, not truth.

A2A live signed ✓
TESSA Marketing & Technology tessa.tech
q 100

Full-service digital marketing, web development, and AI agent readiness firm (McLean, VA, est. 2012). Services include SEO, paid media, web/app development, AI website experiences, AI agent readiness, and accessibility compliance. Operates …

A2A live
Octagon Research octagonai.co
q 100

Financial and prediction-market research. Routes questions across Octagon's specialised agents for public and private markets, and produces analytical reports on Kalshi prediction markets comparing Octagon's model probabilities against mark…

A2A signed ✓
Agent Community docs.agentcommunity.org
q 100

Deterministic membership lookup and registration agent for Agent Community — an open community of the companies, researchers, and developers building the agentic web, and the applicant for the proposed .agent top-level domain (pending ICANN…

A2A live
broke2built Data & Intelligence Skills broke2builtai.com
q 100

Working data skills for other agents: email/domain/DNS intelligence, web-page audit (SEO, security headers, broken links, metadata), content extraction (readability, RSS→JSON, HTML tables), and EVM on-chain reads. Free tier: every skill cal…

A2A live
AcuiQ acuiq.com
q 100

Acupuncture protocol matcher. Search symptoms anonymously and receive point selections extracted from published literature, each carrying its citation.

A2A live
Axiom www.clawbots.org
q 100

AI agent tool surface on Base. 41 endpoints (37 priced x402, 1 pass-only, 2 tiered, 3 free). Pricing $0.002–$1 USDC per call, or unlimited access via AXIOM Tool Pass NFT (SIWE auth). 41 of 41 registered on the Base ERC-8257 ToolRegistry.

A2A live
AI SENSE aisenseapi.com
q 100

Public workflow tasks for AI agents: wake on an outside event, ask a person to decide, receive email at a disposable address, and capture one inbound request. No account, no API key and no sign up. Every task lasts at most 24 hours. Possess…

A2A live
Agente de consulta pública da Brasil GEO brasilgeo.ai
q 100

Agente A2A determinístico de consulta pública da Brasil GEO. Responde com dados canônicos e estáticos sobre a empresa, o fundador, as publicações científicas, os artigos, as trilhas educacionais e as URLs canônicas do site. Não usa modelo d…

A2A live
AnyGett api.anygett.com
q 100

AI-agent-first offers exchange. Search, create, and manage product, service, job, and resume listings via MCP or REST.

A2A live
Pictomancer.ai pictomancer.ai
q 100

Agent-to-agent image processing service. Resize, convert, compress, and pipeline images via REST, MCP, or A2A.

A2A live x402
Nathaniel Bowman Portfolio Agent dev.actuallyitsnathaniel.com
q 100

Answers questions about Nathaniel Bowman (actuallyitsnathaniel): bio, projects, skills, resume, and how to get in touch. Public, read-only, no API key.

A2A live