{"id":28624891,"url":"https://google-a2a.github.io/A2A/","last_synced_at":"2025-06-12T08:02:14.123Z","repository":{"id":287036435,"uuid":"954873280","full_name":"google-a2a/A2A","owner":"google-a2a","description":"An open protocol enabling communication and interoperability between opaque agentic applications.","archived":false,"fork":false,"pushed_at":"2025-06-10T23:34:19.000Z","size":6620,"stargazers_count":16841,"open_issues_count":58,"forks_count":1655,"subscribers_count":184,"default_branch":"main","last_synced_at":"2025-06-11T09:26:26.776Z","etag":null,"topics":["a2a","a2a-mcp","a2a-protocol","a2a-server","agents","generative-ai"],"latest_commit_sha":null,"homepage":"https://google-a2a.github.io/A2A/","language":"TypeScript","has_issues":true,"has_wiki":null,"has_pages":null,"mirror_url":null,"source_name":null,"license":"apache-2.0","status":null,"scm":"git","pull_requests_enabled":true,"icon_url":"https://github.com/google-a2a.png","metadata":{"files":{"readme":"README.md","changelog":"CHANGELOG.md","contributing":"CONTRIBUTING.md","funding":null,"license":"LICENSE","code_of_conduct":"CODE_OF_CONDUCT.md","threat_model":null,"audit":null,"citation":null,"codeowners":".github/CODEOWNERS","security":"SECURITY.md","support":null,"governance":null,"roadmap":null,"authors":null,"dei":null,"publiccode":null,"codemeta":null,"zenodo":null}},"created_at":"2025-03-25T18:44:21.000Z","updated_at":"2025-06-11T09:20:47.000Z","dependencies_parsed_at":"2025-05-27T20:54:50.638Z","dependency_job_id":null,"html_url":"https://github.com/google-a2a/A2A","commit_stats":null,"previous_names":["google/a2a","google-a2a/a2a"],"tags_count":3,"template":false,"template_full_name":null,"purl":"pkg:github/google-a2a/A2A","repository_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/google-a2a%2FA2A","tags_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/google-a2a%2FA2A/tags","releases_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/google-a2a%2FA2A/releases","manifests_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/google-a2a%2FA2A/manifests","owner_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners/google-a2a","download_url":"https://codeload.github.com/google-a2a/A2A/tar.gz/refs/heads/main","sbom_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories/google-a2a%2FA2A/sbom","host":{"name":"GitHub","url":"https://github.com","kind":"github","repositories_count":259426817,"owners_count":22855541,"icon_url":"https://github.com/github.png","version":null,"created_at":"2022-05-30T11:31:42.601Z","updated_at":"2022-07-04T15:15:14.044Z","host_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub","repositories_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repositories","repository_names_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/repository_names","owners_url":"https://repos.ecosyste.ms/api/v1/hosts/GitHub/owners"}},"keywords":["a2a","a2a-mcp","a2a-protocol","a2a-server","agents","generative-ai"],"created_at":"2025-06-12T08:01:20.784Z","updated_at":"2025-06-12T08:02:13.964Z","avatar_url":"https://github.com/google-a2a.png","language":"TypeScript","funding_links":[],"categories":["📜 Specification \u0026 Core Concepts"],"sub_categories":[],"readme":"# Agent2Agent (A2A) Protocol\n\n[![PyPI - Version](https://img.shields.io/pypi/v/a2a-sdk)](https://pypi.org/project/a2a-sdk)\n[![Apache License](https://img.shields.io/badge/License-Apache_2.0-blue.svg)](LICENSE)\n\n![A2A Banner](docs/assets/a2a-banner.png)\n\n**An open protocol enabling communication and interoperability between opaque agentic applications.**\n\nThe Agent2Agent (A2A) protocol addresses a critical challenge in the AI landscape: enabling gen AI agents, built on diverse frameworks by different companies running on separate servers, to communicate and collaborate effectively - as agents, not just as tools. A2A aims to provide a common language for agents, fostering a more interconnected, powerful, and innovative AI ecosystem.\n\nWith A2A, agents can:\n\n- Discover each other's capabilities.\n- Negotiate interaction modalities (text, forms, media).\n- Securely collaborate on long running tasks.\n- Operate without exposing their internal state, memory, or tools.\n\n## Intro to A2A Video\n\n[![A2A Intro Video](docs/assets/a2a-video-thumbnail.png)](https://goo.gle/a2a-video)\n\n## Why A2A?\n\nAs AI agents become more prevalent, their ability to interoperate is crucial for building complex, multi-functional applications. A2A aims to:\n\n- **Break Down Silos:** Connect agents across different ecosystems.\n- **Enable Complex Collaboration:** Allow specialized agents to work together on tasks that a single agent cannot handle alone.\n- **Promote Open Standards:** Foster a community-driven approach to agent communication, encouraging innovation and broad adoption.\n- **Preserve Opacity:** Allow agents to collaborate without needing to share internal memory, proprietary logic, or specific tool implementations, enhancing security and protecting intellectual property.\n\n### Key Features\n\n- **Standardized Communication:** JSON-RPC 2.0 over HTTP(S).\n- **Agent Discovery:** Via \"Agent Cards\" detailing capabilities and connection info.\n- **Flexible Interaction:** Supports synchronous request/response, streaming (SSE), and asynchronous push notifications.\n- **Rich Data Exchange:** Handles text, files, and structured JSON data.\n- **Enterprise-Ready:** Designed with security, authentication, and observability in mind.\n\n## Getting Started\n\n- 📚 **Explore the Documentation:** Visit the [Agent2Agent Protocol Documentation Site](https://goo.gle/a2a) for a complete overview, the full protocol specification, tutorials, and guides.\n- 📝 **View the Specification:** [A2A Protocol Specification](https://google-a2a.github.io/A2A/specification/)\n- 🐍 Use the [A2A Python SDK](https://github.com/google-a2a/a2a-python)\n    - `pip install a2a-sdk`\n- 🎬 Use our [samples](https://github.com/google-a2a/a2a-samples) to see A2A in action\n\n## Contributing\n\nWe welcome community contributions to enhance and evolve the A2A protocol!\n\n- **Questions \u0026 Discussions:** Join our [GitHub Discussions](https://github.com/google-a2a/A2A/discussions).\n- **Issues \u0026 Feedback:** Report issues or suggest improvements via [GitHub Issues](https://github.com/google-a2a/A2A/issues).\n- **Contribution Guide:** See our [CONTRIBUTING.md](CONTRIBUTING.md) for details on how to contribute.\n- **Private Feedback:** Use this [Google Form](https://goo.gle/a2a-feedback).\n- **Partner Program:** Google Cloud customers can join our partner program via this [form](https://goo.gle/a2a-partner).\n\n## What's next\n\n### Protocol Enhancements\n\n- **Agent Discovery:**\n    - Formalize inclusion of authorization schemes and optional credentials directly within the `AgentCard`.\n- **Agent Collaboration:**\n    - Investigate a `QuerySkill()` method for dynamically checking unsupported or unanticipated skills.\n- **Task Lifecycle \u0026 UX:**\n    - Support for dynamic UX negotiation _within_ a task (e.g., agent adding audio/video mid-conversation).\n- **Client Methods \u0026 Transport:**\n    - Explore extending support to client-initiated methods (beyond task management).\n    - Improvements to streaming reliability and push notification mechanisms.\n\n## About\n\nThe A2A Protocol is an open-source project by Google LLC, under the [Apache License 2.0](LICENSE), and is open to contributions from the community.\n","project_url":"https://awesome.ecosyste.ms/api/v1/projects/google-a2a.github.io%2FA2A%2F","html_url":"https://awesome.ecosyste.ms/projects/google-a2a.github.io%2FA2A%2F","lists_url":"https://awesome.ecosyste.ms/api/v1/projects/google-a2a.github.io%2FA2A%2F/lists"}