Agent Context Compression Protocol (ACCP)

This document specifies the Agent Context Compression Protocol (ACCP), a semantic encoding and context management protocol for communication between AI agents within agentic harnesses. ACCP defines a compact message format, intent ontology, state compression strategy, and codec interface that collectively reduce token consumption by 60-90% compared to natural language or standard JSON messaging. ACCP is designed to complement existing protocols (MCP, A2A) and is transport-agnostic.