What problem does it solve? Tuning an oh-my-opencode-slim setup 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. ## Core Features & Use Cases - Config and preset tuning: Edit oh-my-opencode-slim.json[c] to switch presets, assign models and variants per agent, and control skill/MCP permissions with allow/exclude lists. - Prompt overrides: Append or replace built-in agent prompts via markdown files like orchestrator_append.md, with preset-specific override support. - Custom agents: Define narrow specialist agents under agents.<name> with prompt and orchestratorPrompt so the Orchestrator routes work correctly. - Use Case: If the Orchestrator keeps spawning parallel writers that conflict, add a narrow rule to orchestrator_append.md requiring explicit file ownership before parallel delegation. ## Quick Start Ask the assistant to inspect your oh-my-opencode-slim config and propose a smaller model for the explorer and librarian agents to reduce cost.