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>log in to commentWe built dif.sh so feature flags and A/B tests can live right in the repo as simple Markdown files, versioned with git and reviewed in PRs. It’s a single‑command install, no signup, and the CLI generates the context for your code and CI builds. Let us know what you think 😊
- Store feature flags as Markdown files in the repo
- Versioned in git and reviewable via pull requests
- Coding agents read dif/context.json on session start
- One‑command install, no signup required
- Supports A/B tests with results written back to files
dif.sh stores feature flags and A/B tests as Markdown files in your git repo, generating a typed TypeScript client.
- for
- Developers who want version-controlled, code-reviewable feature flags without a separate flag service.
- pricing
- freemium
- license
- MIT
Key features
- Markdown-based flags — Define each flag or experiment in a single .md file stored in the repo.
- CI validation — CLI validates files in CI for weight sums, surface existence, and collision checks.
- Typed client generation — dif build compiles active files into a zero-dependency TypeScript SDK.
- No server calls — SDK picks variants by hashing user ID, eliminating runtime flag server requests.
- Conflict detection — Build fails if two live tests would collide on the same user.
- Optional cloud metrics — Dif Cloud provides live pulse, team metrics and PR write-back for a per-event fee.
Use cases
- Version-controlled rollout of a new UI copy with 50/50 split.
- Running holdout or staged rollout experiments directly from PRs.
- Ensuring no two experiments affect the same user via exclusion groups.
- Archiving concluded tests and preserving learnings in surface logs.
dif.sh vs alternatives
 dif.sh |  GitHub Actions |  CircleCI |  Vercel |  Render | |
|---|---|---|---|---|---|
| Best for | Git-backed feature flags and experiments | CI/CD pipelines | CI/CD pipelines | Frontend hosting | Container runtime |
| Pricing | Freemium | Subscription | Subscription | Subscription | Subscription |
| DevHunt upvotes | 1 | 0 | 0 | 0 | 0 |
| Launched | Oct 2026 | — | — | — | — |
- dif.sh vs GitHub Actions: GitHub Actions is a CI/CD platform, not a git-backed flag system.
- dif.sh vs CircleCI: CircleCI provides CI pipelines but lacks built-in feature flag storage in git.
- dif.sh vs Vercel: Vercel deploys front-ends; dif.sh focuses on flag management in code.
- dif.sh vs Render: Docker containers apps, not a feature flag solution.
dif.sh FAQ
Do I need Dif Cloud to run experiments?+
No. The CLI and SDK are free and open source; Cloud is optional for live metrics and team view.
What counts as an event?+
Each SDK exposure and each dif.track() call count as one event; deduped retries are not billed.
What happens if I exceed my event quota?+
Events above the included 1M are billed $0.02 per 1,000 and a spend cap stops further ingestion.
Are seats charged separately?+
No. Both Pro and Enterprise plans include unlimited seats.
Can I reduce my bill?+
Yes, by setting a per-project sample rate to lower event volume.
Summarized by DevHunt from dif.sh · Oct 9, 2026. Details may change; check the official site.
