# 2026-02-28 Session Notes

## OpenCode LLM Provider Implementation Plan

Nicholai reviewed and approved a comprehensive plan to add OpenCode as a third extraction LLM provider for the Signet memory pipeline. Previously, only Ollama (HTTP API) and Claude Code (CLI subprocess) were available.

### Design Overview

OpenCode v1.2.15 (installed at `/home/nicholai/.opencode/bin/opencode`) can run as a headless HTTP server and access any model it supports (Anthropic, Google, OpenAI, OpenRouter, local Ollama) through a unified REST API. The implementation will auto-start the OpenCode server on port 4096 when the daemon initializes, with automatic fallback to Ollama if unavailable.

### Implementation Scope

Four files require modification:
1. `packages/core/src/types.ts` — add `"opencode"` to provider union
2. `packages/daemon/src/pipeline/provider.ts` — create `createOpenCodeProvider()` factory
3. `packages/daemon/src/daemon.ts` — wire provider selection and fallback logic
4. `packages/daemon/src/memory-config.ts` — recognize opencode in config resolution

### Key Technical Decisions

- Default model: `anthropic/claude-haiku-4-5-20251001`
- Default timeout: 60s
- Server management: daemon will spawn `opencode serve --port 4096` as a child process, tracking it for cleanup on shutdown
- Session reuse: single session created on first call, reused for all subsequent calls
- Response handling: SSE (server-sent events) collected from `/sessions/{id}/message` endpoint until completion

### Next Steps

Implementation work scheduled. First task: start OpenCode server and inspect actual response format at `/doc` endpoint to confirm SSE parsing approach.