Actuator

Why Actuator exists

Most flag systems were designed for human dashboards: click a toggle, ship a change. AI-native products have a different need — agents that read configuration, propose changes, and need to explain their reasoning. Actuator is built for both audiences from the same evaluator: the dashboard you click and the API your agent calls return identical structured reasons.

What ships in the box

• Boolean and string feature flags.
• Typed dynamic configs (string, number, boolean, JSON).
• Named segments composable inside rules.
• Audit log of every change, with full reconstruction at any past timestamp.
• Counterfactual preview — see what a change would do before saving it.
• Two-phase propose / apply for agent-driven workflows.
• First-party SDKs (TypeScript, Swift, MCP) and a REST API.