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Notes from the build.

Technical writing for founders who ship. How Betterflag gets built, real numbers behind our pricing and launch decisions, and hands-on guides for flags, rollouts, and agent-driven releases. No content-marketing filler.

All Architecture Engineering Growth Insights

EngineeringAug 22, 20264 min read

Feature Flags Over MCP: Give Your Coding Agent a Kill Switch

What happens when your feature flag platform is a first-class MCP server: how agents create flags, stage rollouts, and pull kill switches, and why guardrails and audit trails matter more than dashboards.

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EngineeringAug 21, 20264 min read

Shipping a Feature From Claude Code: Flag, Rollout, Kill Switch

A hands-on walkthrough of a full agent-driven release: Claude Code (or Cursor) writes the code, creates the flag over MCP, stages a 10% production rollout, watches evaluation stats, and rolls forward. No dashboard required.

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EngineeringAug 21, 20265 min read

Feature Flag Kill Switch: Instant Rollback Without a Redeploy

A kill switch is a feature flag that turns a broken path off in seconds. How it differs from a revert, what to wrap, and how to pull it from a dashboard or an agent.

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EngineeringAug 20, 20265 min read

How to Do a Percentage Rollout with Feature Flags

A practical guide to percentage rollouts: sticky assignment, 10% then 50% then 100%, kill criteria, and how gradual rollouts differ from canary deploys.

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EngineeringAug 19, 20265 min read

Feature Flags in Next.js App Router

How to use feature flags in Next.js App Router: Server Components, middleware, edge evaluation, caching, and client components without killing performance.

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EngineeringAug 18, 20265 min read

How to Add Feature Flags in React

Add feature flags in React without a flash of the wrong UI: server evaluation, a useFlag hook, targeting, percentage rollouts, and tests. Copy-paste patterns for 2026.

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EngineeringAug 16, 20266 min read

Feature Flag Best Practices That Actually Scale

Practical feature flag best practices: naming, defaults, targeting, percentage rollouts, kill switches, and how to retire flags before they become debt.

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EngineeringAug 15, 20266 min read

What Are Feature Flags? A Practical Guide for 2026

Feature flags (also called feature toggles) let you deploy code without releasing it. How they work, the four primitives that matter, and when you actually need them.

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