Agent2Agent (A2A) Protocol on new websites

1. Agent2Agent (A2A) Protocol did not appear on any new site in the last 30 days.^[1]

The line is the 7-day average share of new sites that use Agent2Agent (A2A) Protocol, since 10 September.

#	Movement	Tool	Share of all sites	Share of category	Bar
1	–	HTTP/3	50.6%	>99.9%
2	–	Tor Onion Service	<0.1%	<0.1%
3	▼3	United States Semantic Standard	<0.1%	<0.1%
4	▼1	I2P	<0.1%	<0.1%
5	▼1	njump	<0.1%	<0.1%
6		TDM Reservation Protocol	<0.1%	<0.1%
7	▼3	AT Protocol	<0.1%	<0.1%
8	▲7	carbon.txt	<0.1%	<0.1%
9	▼1	WebTorrent Tracker	<0.1%	<0.1%
10	▲7	Agent2Agent Protocol	<0.1%	<0.1%
11		Agent2Agent (A2A) Protocol	<0.1%	<0.1%
12		AI-Disclosure Header	<0.1%	<0.1%

All-time shares across the new sites we track: of all of them, and of the sites using any Protocol tool. All 23 in Protocol

2 of the 2 sites using Agent2Agent (A2A) Protocol are product launches we list individually.

Site	Found	Also detected
iAgentEdge — Agent Infrastructure Appliance. Turnkey On-Prem. agentedge.us · Developer Tools · United States	Jul 9
iAgentFoundry — Custom Model Fine-Tuning on iJarvis Hardware agentfoundry.us · United States	Jul 9

1. These figures cover websites that went live since April 2026, not the web as a whole.