A2E ProtocolAgent-to-Environment

A protocol and Python SDK for building stateful, interactive environments for LLM agents

🔌

Plugin-Based Runtime

Thin execution kernel with all capabilities as dynamically loaded plugins. 9 built-in capability namespaces: tools, memory, env, proc, learn, skills, toolkits, chains, mcp.

⚡

9 Capability Namespaces

Tools, Memory (3-tier), RL Environments, Process management, Learning/feedback, Skills, Toolkits, Chain pipelines, MCP bridge — negotiated at handshake.

🔄

Stateful Sessions + Persistence

Session-per-connection with snapshot/restore, pluggable storage (file or SQLite), and structured audit logging with rotation.

Tech Stack

Layer	Technology
Protocol	NDJSON over Pydantic v2
Server	FastAPI + Uvicorn
Transport	HTTP+SSE / In-process Direct
Schema	Pydantic BaseModel (validation + serialization)
Persistence	File / SQLite

Quick Start Guide
Architecture Overview
Client API Reference
Protocol Specification
Capabilities Index

A2E ProtocolAgent-to-Environment

Plugin-Based Runtime

9 Capability Namespaces

Stateful Sessions + Persistence

Tech Stack ​

Quick Navigation ​

Tech Stack

Quick Navigation