AI Agents
browser-use
The open-source library that lets AI agents control a real browser.
★ 117.4k starsMIT
View guide →The open protocol that lets AI agents talk to each other.
A2A is an open-source ai agents project by a2aproject (a2aproject/A2A on GitHub). It has 26,067 GitHub stars and 2,657 forks, is released under the Apache-2.0 license, and was last updated on GitHub on 7 October 2026.
Write down the outcome you want in one sentence.
Clone it locally and check the README.
Get dependencies and tooling in place per the docs.
Follow the minimal example, then adapt it to your needs.
A public spec anyone can implement.
Agents from different builders, talking.
Neutral stewardship, not one company's API.
MCP links agents to tools; A2A links agents to agents.
Structured around delegating work.
Implement it in whatever stack you use.
Download the specification source.
git clone https://github.com/a2aproject/A2A.git
cd A2AStart with the spec documents and any diagrams.
find . -name '*.md' | head -20Look for reference implementations or SDKs linked from the README.
# see README for implementations in your languageIt is an open-source project at a2aproject/A2A with 2657 forks. Check the contributors tab and recent commits to judge how active maintenance is.
Yes — Apache 2.0 allows commercial use and modification. Keep the license and notice files, and note it includes a patent grant.
No — it's a protocol specification. You implement it (or use libraries that do) so your agents can interoperate.
Complementary: MCP connects agents to tools; A2A connects agents to agents.
Clone the repo and follow the README quickstart — the docs at https://a2a-protocol.org/ walk through setup.
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Free and open — grab the source, star the repo, and start creating.