a2a-wrapper
A monorepo of Agent2Agent protocol wrappers that turn AI coding backends such as GitHub Copilot SDK, OpenCode, Claude Code, OpenAI Codex and Google Antigravity into standalone, spec-compliant A2A servers from a JSON configuration file.
a2a-wrapper packages several AI backends as A2A (Agent2Agent) protocol servers, so that any A2A-aware orchestrator can talk to them over a shared, standardized wire format. Each wrapper negotiates the protocol version per request, serving A2A v1.0 natively while staying backward compatible with v0.3.x clients.
The monorepo includes a shared core package for logging, configuration loading, event publishing and session management, plus individual wrappers for GitHub Copilot SDK, with bring-your-own-model support for Ollama, OpenAI, Anthropic, Azure or vLLM, OpenCode, Claude Code, built on the official Claude Agent SDK, OpenAI Codex SDK, and Google Antigravity SDK. All wrappers share sub-agent delegation, MCP tool integration and JSON configuration with environment or CLI overrides, while differing in streaming transport and sandboxing support.