Claude Code hook payloads are mapped through src/adapters/claude-code/mapper.ts into AgentEvent records. The mapper preserves legacy fields such as contentSessionId, tool_name, tool_input, tool_response, cwd, agentId, agentType, platformSource, and both tool_use_id and toolUseId.
Generic agent examples live in src/adapters/generic-rest/examples.ts for Codex, OpenCode, and custom REST ingestion. New adapters should emit the REST V1 event shape instead of coupling their payloads to Claude Code internals.