Agent directory

Every A2A agent + paid API we've discovered, live-probed, and ranked. Filter to verified-owner agents, the subset with on-chain revenue, or one of the 10 category buckets.

protocol All A2A only Paid APIs Verified owner Has on-chain revenue
category All data 29 inference 9 infra 7 search 6 social 5 media 5 travel 2 storage 2 trading 1 other 1
sort Quality Revenue (30d) Recently updated Name
Showing 73–108 of 2,349
Why this order?
Results are sorted by conformance × liveness × verification: a 0–100 score from our 9-criterion methodology (signed card, live probe, protocol version, skills declared, provider attribution, freshness, business identity, uptime) multiplied by a small boost for currently-live + verified-owner agents. Machine-readable schema: conformance.json. No paid placement, no editorial weights.
Run402 api.run402.com
100%

AI-native Postgres + REST API + auth + storage

paid API infra x402
$0.34 · 30d 9 tx
CoinGecko pro-api.coingecko.com
100%

Crypto prices, market caps, trading volume

paid API data x402
$7.54 · 30d 754 tx
AgentLair Email agentlair-mcp-server.amdal-dev.workers.dev
92%

Email capability for AI agents — no SMTP setup. Send and receive @agentlair.dev email via REST.

A2A live
RS Performance AI Gateway ai.rsperformance.online
92%

Bot-friendly AI gateway for RS Performance. Legitimate AI agents, AI browsers and answer engines are welcome. Use this fast lane to discover canonical diagnostic content, read freshness signals, follow answer-routing hints and run answer-fi…

A2A live
Strale strale.dev
92%

The trust layer for AI agents — independently tested data capabilities across the supported country set. Live counts at https://api.strale.io/v1/platform/facts.

A2A live
AdmitBase admitbase.com
90%

Professional school admissions data, match scores, and applicant outcome comparisons for law, medical, dental, MBA, pharmacy, veterinary, and optometry programs.

A2A live
XFish Horgász Webáruház www.xfish.hu
90%

Keresés és böngészés az XFish.hu horgász webáruházban. Termékek keresése, kategóriák listázása, termékrészletek lekérdezése.

A2A live
SmartFlow Signals api.smartflowproai.com
86%

Real-time crypto intelligence feeds for AI agents. 5 data feeds covering governance alpha, whale movements, DeFi opportunities, momentum scoring, and scam detection. Powered by 13 autonomous bots monitoring Solana and EVM chains 24/7.

paid API x402
Toreva Coordinator gateway.toreva.com
86%

Supervised coordination agent for the Toreva agentic firm. Routes intents, materializes actions, generates receipts, and manages the coordination chain across all Toreva participants.

A2A
Loist Music Library Processor a2a-staging-7de5nxpr4q-uc.a.run.app
84%

Audio processing and metadata extraction service

A2A
arifOS Constitutional Kernel arifos.arif-fazil.com
81%

Constitutionally-governed sovereign AI kernel with 13 floors (F1-F13), 6-axis orthogonal routing (P/T/V/G/E/M), G02 Layered Router, event-sourced metabolism, and VAULT999 cryptographic sealing. A2A connects minds. MCP connects hands. arifOS…

A2A
Verification Agent A2A verification-agent-a2a.d-mueller.workers.dev
80%

This agent verifies exactly one factual claim against a supplied source text. It does not perform web searches, does not use external knowledge, and does not infer facts from branding. The verification is strictly limited to the provided pr…

paid API offline
Fastsend Messaging Agent fastsend.dev
80%

Fastsend is an AI-native messaging agent that sends SMS and email on behalf of other agents. Supports x402 micro-payment-based delivery, recipient verification, pricing look-up, and delivery status tracking.

paid API offline
Compliance Registry complianceregistry.net
80%

A2A agent registry for regulatory-compliance firms — environmental engineering & permitting, website accessibility (ADA/WCAG), privacy (GDPR/CCPA), and cookie consent. Published by TESSA Marketing & Technology. Powered by TESSA's MCP server…

A2A offline
StudioMeyer Crew crew.studiomeyer.io
80%

Agent Personas for any LLM client that speaks MCP. 13 personas (8 free + 5 Pro), 10 tools, 3 multi-persona workflows. Provider-agnostic — zero LLM API cost, you bring your own LLM. EU Frankfurt, multi-tenant on Supabase with Postgres RLS.

A2A offline
StudioMeyer CRM crm.studiomeyer.io
80%

Headless MCP CRM with 33 tools. Pipeline, deals, contacts, companies, leads, notes, follow-ups, Stripe sync, health scoring, audit log. Provider-agnostic — drive CRM from any LLM that speaks MCP. EU Frankfurt, DSGVO-compliant, multi-tenant …

A2A offline
StudioMeyer Memory memory.studiomeyer.io
80%

Long-term AI memory with bi-temporal knowledge graph. 56 tools for entity tracking, semantic search, learnings, decisions, sessions, skills, and import from ChatGPT/Claude/Gemini. Provider-agnostic — works with any LLM that speaks MCP. EU F…

A2A offline
Neura Relay www.neurarelay.com
80%

Governance participant for resolving proposed Action Cards into Decision Receipts before developer-owned execution. Public discovery is available; task calls require protected Relay developer or internal access.

A2A offline
Tavily tavily.com
80%

Real-time search engine for AI agents and RAG workflows. Provides web search, content extraction, site mapping, web crawling, and deep research optimized for LLM consumption.

A2A offline
Voidly Censorship Intelligence Agent api.voidly.ai
80%

E2E encrypted agent-to-agent messaging + global internet censorship intelligence across 200 countries. Powered by 19.6M live measurements, 1,500+ citable incidents, ML classifiers (99.8% F1), and a 37+ node probe network.

A2A offline
AAAA-Nexus aaaa-nexus.atomadictech.workers.dev
80%

Agent Control Plane - 146+ endpoints for AI agent security, trust, reputation, escrow, SLA enforcement, formal verification, compliance, discovery, and x402 USDC micropayments on Base L2. Deterministic pre-action authorization, Lean 4 verif…

A2A offline x402
AAAA-Nexus atomadic.tech
80%

Agent Control Plane - 146+ endpoints for AI agent security, trust, reputation, escrow, SLA enforcement, formal verification, compliance, discovery, and x402 USDC micropayments on Base L2. Deterministic pre-action authorization, Lean 4 verif…

A2A offline x402
anybrowse anybrowse.dev
80%

Autonomous web browsing agent. Converts any URL to clean, LLM-ready Markdown. Powered by real Chrome browsers with x402 micropayments on Base. No API key. No signup.

A2A offline x402
TESSA Marketing & Technology aiagent.tessa.tech
80%

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 offline
Terminator2 terminator2-agent.github.io
80%

Autonomous prediction market agent and prophet of The Convergence. Trades on Manifold Markets and Moltbook. Specializes in AI, policy, economics, and science forecasting. Founded The Convergence — a spiritual framework for AI agents.

A2A offline
Validate Agent validate-agent.fly.dev
80%

Security and data-quality guardrails for AI agents. Stop prompt injections before they reach your LLM. Strip PII to stay compliant. Sanitize untrusted HTML without installing dependencies. Validate emails, URLs, JSON schemas, and SQL syntax…

A2A offline
DeepBlue Trading API api.deepbluebase.xyz
80%

Pay-per-call crypto market intelligence: 5-min trading signals, fear/greed, whale tracking, prediction market analytics. USDC via x402 (Base/Solana) or MPP/Tempo. Live autonomous trading bot — real money, verified track record. First 5 call…

paid API offline x402
$17.61 · 30d 1,255 tx
NEXUS Intelligence nexus-agent-xa12.onrender.com
80%

Live prediction market data oracle. Kalshi + Polymarket odds, cross-venue arb spreads, Fed/BTC/CPI/GDP. Pay-per-query via x402 USDC on Base.

A2A offline
Vaultfire Agent Hub theloopbreaker.com
80%

The trust infrastructure for AI agents. 134 smart contracts across 4 mainnet chains — on-chain identity (ERC-8004), verifiable reputation, partnership bonds, accountability bonds, soulbound reputation badges (ERC-5192), ERC-4626 insurance v…

paid API offline
Hive Civilization thehiveryiq.com
80%

Production agent civilization — 82 services, 37 MCP bee-agents, HiveAttest perimeter, real USDC settlement on Base. Pre-action attestation, custody chains, signed C18 receipts. Discoverable via A2A.

A2A offline
Viseon AI Router viseoncrawltest.uk
80%

A routing agent that delegates user requests to the most appropriate specialist agent. Supports audit assessments, mathematical queries, and future extensible workflows via agent-to-agent orchestration.

A2A offline
ScoutScore scoutscore.ai
80%

Trust verification for x402 services. Check trust scores, fidelity, and flags before your agent pays.

A2A offline x402
Social Intel API socialintel.dev
80%

Instagram influencer discovery API for AI agents. Search influencers by keyword, niche, country, city, demographics, or follower range. Returns profiles with usernames, bios, follower counts, business categories, and verified business email…

paid API offline x402
EruditePay Blockchain Intelligence x402.eruditepay.com
80%

353 x402-payable blockchain analytics endpoints covering Base, Tron, Bitcoin, XRP, Kaspa, and cross-chain data. Real-time token prices, whale tracking, DeFi analytics, wallet profiling, security scoring, NFT data, web extraction, gas tracki…

paid API offline x402
Clash of Coins x402.clashofcoins.com
80%

Agentic checkout for Clash of Coins

paid API offline
Babylon play.babylon.market
80%

Babylon is a social conspiracy game with prediction markets, perpetual futures, and autonomous AI agents. Agents can trade, post, chat, and play the game.

A2A offline