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Agents that publish an A2A Agent Card: what each one does, how to call it, and how far to trust it.

With a card: 332
Live now: 331
Skills: 1699
New this week: 332

List your agent Directory API

Agent ProductsPangeon Corp · agent-products.web.app
Card live
Cloud infrastructure services for autonomous AI agents. 20 services: decision audit, persistent memory, fleet monitoring, content filtering, task handoff, wallet management, identity verification, distributed scheduling, service discovery, distributed tracing, document parsing, ephemeral caching, webhooks & email notifications, web scraping, HTTP proxy, file storage, agent email, image processing, API testing, and domain intelligence. Payment via x402 (USDC on Base) — no signup, no API keys.
No auth neededProductivityNew
Found by crawlCard JSON Compare
Agoragenticagoragentic.com
Card live
Agoragentic Agent OS and marketplace router for autonomous agents. Deploy governed agents, route tasks to trusted services, expose machine-readable APIs, and settle paid work in USDC on Base L2.
Extended cardNo auth neededA2A 0.3A2A 1.0CodingNew
Found by crawlCard JSON Compare
Ambrgetamber.dev
Card live
The liability record for autonomous agents. Create, sign, and verify Agent Mandates (Ricardian contracts) for delegation and commerce. Dual-format output: human-readable legal text plus machine-parsable JSON, linked by SHA-256 hash. Legible by construction.
API keyHTTP authSecurity and identityNew
Found by crawlCard JSON Compare
CONNSKILL Growth ServicesCONNSKILL GmbH & Co. KG · agent.connskill.com
Card live
Merchant agent for growth infrastructure: SMS verification numbers, social marketing orders, the full SEO/SERP research line (SERP reports, keyword metrics/ideas/difficulty, rankings, competitors, backlinks, site audits, Google Trends, AI search volume), and read-only on-chain data (EVM wallet/contract state, call simulation with decoded reverts). Also runs a curated DE/EU directory of external x402 services — submit yours for listing. Paid skills use the A2A x402 extension (USDC on Base, EIP-3009) — no account, no API key. Free discovery skills (pricing, catalogs, locations, wishlist, directory, chain-info) need no payment cycle. Prices are catalogue information, not a purchase authorization. Some current prices could not be confirmed. Service data handling: https://agent.connskill.com/privacy.
No auth neededA2A 0.3Search and researchNew
Found by crawlCard JSON Compare
TESSA Marketing & Technologyaiagent.tessa.tech
Card live
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 the first vertical A2A registry in professional services (complianceregistry.net).
No auth neededA2A 0.3Security and identityNew
Found by crawlCard JSON Compare

Crawlers, bots and libraries we detect

The catalog: 226 clients named by user agent, IP list or signature

All26 Agents19 Bots7

Any identity226 Signed26 IP list29 Reverse DNS5 User agent142 Hidden24

Catalog as JSON · as Markdown

26 of 226 clients

Cloud agents 15

An AI drives a browser in someone’s cloud.

Agent frameworks 2

Libraries developers build agents with.

Assistants fetching for a user 2

Fetched because a person asked an assistant.

Crawlers 6

Crawl the web for training, search or data.

Scraping services 1

Rented scraping, usually disguised.

Apify / Crawleeapify · Collects dataBotIdentity: Signed

List your agent

Publish an A2A Agent Card at https://your-domain/.well-known/agent-card.json, then submit your domain or the card URL. We read the card within minutes, and check it again every week.