# ADR 7: Platform-Native Plugin Contracts

**Date**: 2026-04-28

### Decision
Each platform uses its native plugin interface: Hermes `BasePlatformAdapter`, openclaw extension API, Agent Zero plugin system.

### Context
Each platform has matured, battle-tested interfaces for receiving and sending messages. A unified A2A contract would add unnecessary abstraction and latency for local agent communication. Platform-native contracts are reliable, handle connection-state/retry automatically, and follow each platform's established patterns.

### Consequences
- Three separate plugin implementations
- Each plugin leverages platform-specific reliability features
- Plugin developers need familiarity with each platform
- Cross-platform @all-bots still works because each bot processes the same Zulip event independently