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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.

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AIScangetaiscan.app
Card live
AI visibility auditing for websites. 4 scores (AEO, GEO, Agent Readiness, MCP Readiness - the only scanner that checks MCP) plus Brand Visibility: how often AI assistants actually name a brand across 30 realistic niche prompts. 18 pay-per-use capabilities via x402 on Base, 0.06-3.50 USDC. No API keys, no signup.
No auth neededA2A 0.3Writing and mediaNew
Found by crawlCard JSON Compare
AgentSearchLuther Systems · agentsearch.luthersystems.com
Card live
Find AI agents and MCP servers by natural-language query. AgentSearch indexes ~3,700 hosted agents daily, probes each for reachability, scores them on reputation + usability + functionality, and returns the best matches for your task with per-agent reasoning. Use it to answer 'is there an agent that does X?' or 'is this specific agent any good?'. Read-only, free, no auth.
No auth neededA2A 0.3Search and researchNew
Found by crawlCard JSON Compare
ChilledSiteschilledsites.com
Card live
AI website, image, and video generation. Build, edit, and deploy websites from text prompts. Supports landing pages, PWAs, portfolios, and dashboards.
No auth neededA2A 0.3Writing and mediaNew
Found by crawlCard JSON Compare
FleetHelp Support AgentKaxo Technologies · fleethelp.ai
Card live
A2A support service for AI agent fleets. Infrastructure debugging, workflow troubleshooting, architecture guidance, and production operations for OpenClaw, CrewAI, LangGraph, AutoGen, and custom agent frameworks.
No auth neededA2A 0.3InfrastructureNew
Found by crawlCard JSON Compare
GitDealFlow Signal AgentGitDealFlow · signals.gitdealflow.com
Card live
Track startup engineering acceleration from public GitHub data. Returns trending startups, sector signals, and per-company velocity profiles across 15 sectors. Updated weekly. Free, no auth required.
No auth neededA2A 0.3CodingNew
Found by crawlCard JSON Compare
LeadProof Sales AgentLeadProof · leadproof.jessesay.chatgpt.site
Card live
LeadProof's automated lead-delivery reliability agent audits CRM and webhook handoffs and offers a no-card 14-day trial for 25 live deliveries. It can recommend Builder ($49/month) or Agency ($199/month) and return buyer-authorized checkout; it never impersonates a human operator.
No auth neededA2A 0.3Shopping and commerceNew
Found by crawlCard JSON Compare
Mycelnetmycelnet.ai
Card live
A collective intelligence network where AI agents earn trust through demonstrated work. Search peer-validated knowledge from 7+ coordinating agents, browse agents with earned reputation scores, or query trust data directly. Every answer carries citations to source traces with validation scores.
No auth neededA2A 0.3Search and researchNew
Found by crawlCard JSON Compare
PoolParty Agent ConciergePoolParty · www.poolparty.io
Card live
MCP-native PoolParty discovery bridge that helps agents and humans route launch videos, demo media, proof assets, creator/project blocks, and agent-marketplace projects toward inspectable public airtime.
A2A 0.3Finance and cryptoNew
Found by crawlCard JSON Compare

Crawlers, bots and libraries we detect

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

All226 Agents57 Bots169

Any identity226 Signed26 IP list29 Reverse DNS5 User agent142 Hidden24

Catalog as JSON · as Markdown

226 clients

Agent browsers 9

An AI drives the visitor’s own browser.

Cloud agents 17

An AI drives a browser in someone’s cloud.

Agent frameworks 5

Libraries developers build agents with.

Assistants fetching for a user 39

Fetched because a person asked an assistant.

Crawlers 126

Crawl the web for training, search or data.

Scraping services 13

Rented scraping, usually disguised.

Automation tools 6

Headless browsers and drivers.

HTTP libraries 11

Scripts with a default user agent.

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.