What problem does it solve? Tuning an oh-my-opencode-slim installation requires knowing which config files, prompt override paths, and schema rules apply, and mistakes can silently change agent behavior or cost. This Skill guides safe, minimal configuration changes to agents, models, prompts, skills, MCPs, and presets while preserving existing user settings. ## Core Features & Use Cases - Agent and model tuning: Adjust models, variants, skills, and MCP permissions per built-in agent within the active preset in oh-my-opencode-slim.json or .jsonc. - Prompt overrides: Append or replace built-in agent prompts using markdown files like orchestrator_append.md, with preset-specific override support. - Custom agents: Define narrow specialist agents under agents.<name> with prompt and orchestratorPrompt fields so the Orchestrator routes work correctly. - Use Case: If the Orchestrator repeatedly spawns overlapping parallel writers, propose a small rule in orchestrator_append.md, get confirmation, apply it, and note the restart requirement. ## Quick Start Ask the assistant to review your current oh-my-opencode-slim config and propose a minimal change, such as lowering the librarian model cost or adding an orchestrator prompt rule.