Tools

Feature Flag Evaluator for Rule Testing

Evaluate feature flag rules against a user context to see if a flag is enabled.

Feature Flag Evaluator

Test feature flag rules against sample user context to confirm targeting logic. This helps product and engineering teams validate rollouts before shipping.

How to use the Feature Flag Evaluator

  1. Paste your rule set and user context.
  2. Click Evaluate.
  3. Review whether the flag is enabled.

Common use cases

  • Verifying rollout rules before deployment.
  • Troubleshooting unexpected flag behavior.
  • Sharing rule examples with teammates.
  • Documenting targeting logic for audits.

Tips & notes

  • Keep your rule format consistent across environments.
  • Test edge cases like missing attributes.
  • Use clear attribute names in context objects.

Related developer tools

  • JSON Formatter
  • JSON Schema Generator
  • API Response Comparator

FAQ

Rules format?
JSON array of equality rules.
Does it support multiple conditions?
Yes. Multiple rules can be combined for evaluation.
Is this tied to a specific provider?
No. It is a generic evaluator for simple rule sets.