Sites using A2A Registry
Registry and discovery service for AI agents using the Agent-to-Agent (A2A) protocol.
7 sites
5 found by StackScope, 2 via launch platforms
- StackScope Wider Web 4
- StackScope Discovery (Indie) 1
- Product Hunt 2
A2A Registry has been detected on 7 launches since first appearing in May 2026. Most recent detection: Elderly Care Match, yesterday.
It's most commonly paired with Google Search Console, Cloudflare DNS, and Cloudflare.
Share of new sites using A2A Registry
Each dot is one launch day. Line is the 7-day rolling average; weekly averages before June 2026. Chart starts at first detection.
The shaded part of the chart is measured against a different set of sites. Until 8 July 2026 we only tracked launches from launch platforms; from that date we crawl the wider web as well. The share is a proportion of whatever we were tracking at the time, so it can step at that line without the technology itself changing. For a single continuous measure, switch to launch platforms.
Directory leaders
| Tool | % of launches | % of category | ||
|---|---|---|---|---|
| #1 | – |
Product Hunt
|
0.12% | 32.60% |
| #2 | ▲4 |
TradeIndia
|
0.04% | 9.92% |
| #3 | – |
Fazier
|
0.03% | 7.46% |
| #4 | – |
ExportersIndia
|
0.03% | 7.31% |
| #5 | ▼2 |
Startup Fame
|
0.02% | 6.77% |
| … | ||||
| #322 | ▼8 |
A2A Registry
Current page
|
<0.01% | 0.05% |
Percentages show adoption among indie launches: the share of all analysed launches, and of launches using any Directory tool.Among August launches it ranked #349 in Directory, down from #341 in July. All 1066 in Directory →
Often used with
| Tool | Sites |
|---|---|
Google Search Console
|
4 |
Cloudflare DNS
|
4 |
Cloudflare
|
4 |
Google Fonts
|
3 |
Google Analytics
|
2 |
Tools most often detected on the same sites as A2A Registry.
Recent launches we can show
3 of the 7 sites using A2A Registry are product launches we list individually. The other 4 are sites we found crawling the wider web: they count towards the figures above, but we do not publish them one by one. How StackScope Discovery works
The StackScope API serves all 7 sites using A2A Registry, filterable and exportable, from £15 a month.