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Built-ins Overview

Everruns ships with built-in harness types and capabilities that provide the foundation for agent sessions.

A harness defines the base environment for sessions — system prompt, default model, and bundled capabilities. Every session is assigned a harness.

HarnessDescriptionCapabilities
BaseEmpty harness, full controlNone
GenericRecommended default with core tools12 bundled
Platform ChatExtends Generic for global chatGeneric + Platform Management

See the Harnesses feature guide for harness selection, API management, and the prompt stack model.

Capabilities are modular units that extend what an agent can do. Each can contribute tools, system prompt additions, and UI features.

Browse the full Capabilities reference for the complete list organized by category.