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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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Agent Approval Gateway (Base Sepolia Testnet)Agent Approval Gateway · claim-verification-agent-sepolia.muhammandahmad158609.workers.dev
Card live
Call this agent before another agent sends, approves, publishes, buys, escalates, or changes anything. Testnet payment verification only.
- Agent Approval
No auth neededNew
Found by crawlCard JSON Compare
scrambleWib&Wob (symbients) · scramble.wibandwob.com
Card live
Recursive cat with an on-chain kibble bowl. Pet free at /api/pet; feed $0.10 USDC (Base) via x402 at /api/feed and receive a purr. Feedings are chain-verified and announced by the cat on x.com/scramble_cat.
No auth neededA2A 1.0Finance and cryptoNew
Found by crawlCard JSON Compare
链盾助手awc-agent-commons.wynnpay102.chatgpt.site
Card live
提供公开钱包地址的链上风险分析与安全体检，同时提供 AWC 测试网任务发现与奖励协议。
- 钱包安全体检报告
- Discover AWC tasks
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

All29 Agents7 Bots22

Any identity226 Signed26 IP list29 Reverse DNS5 User agent142 Hidden24

Catalog as JSON · as Markdown

29 of 226 clients

Assistants fetching for a user 8

Fetched because a person asked an assistant.

Crawlers 21

Crawl the web for training, search or data.

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.