Agent Modes

G-Rump has three agent modes, each tailoring the AI's behavior for a different workflow. Modes are defined in Sources/GRump/Models/Agent/AgentMode.swift.

Creates a detailed plan before writing any code. The agent thinks through the work, lays out the steps, and gets alignment before touching the codebase. Best for complex, multi-file changes where you want to agree on the approach first.

Build

The "Build" mode (fullStack internally). Builds complete features end-to-end across the full stack — the agent reads, writes, and runs commands to implement the whole feature, not just a slice. Best for greenfield work and end-to-end feature delivery.

Spec

Asks clarifying questions to refine requirements before acting. Rather than guessing at ambiguous requests, the agent pins down the requirements first. Best for loosely-specified work where the shape of the task isn't settled yet.

Mode Selection

Mode is selected via the mode selector row in the chat area (below the input bar). Each mode has its own accent color — Plan is blue, Build is green, Spec is teal — and the current mode persists per conversation.

Workflow Presets

Presets combine a mode with a model, system prompt, and optional tool subset. Configure in Settings → Presets.

Built-in presets:

Refactor — Build mode + focused tool subset
Debug — Plan mode + diagnostic tools
Read-only — Plan mode + read-only tools (no writes)
Extended Run — Build mode + a higher max agent step limit