flagd
A feature-flag daemon that evaluates flags from files, HTTP or Kubernetes resources and serves them over the OpenFeature Remote Evaluation Protocol.
Specifications it implements
What this tool does to each specification, in the role vocabulary. Follow a standard through to standards.apievangelist.com for what it actually specifies.
| Standard | Role | What that means |
|---|---|---|
| OpenFeature | serves |
- Interfaces
clicontainerhttp-api- Invoke
flagd start --uri file:<flags.json>- Consumes
- json, yaml
- Emits
- json
- Runtime
- Runs offline Deterministic Read-only No credentials
Where it applies
Jobs this tool actually does, and the surface each one is exercised on.
Notable for agent work because it runs entirely offline — flags become testable configuration rather than a hosted dependency.
- Website
- https://flagd.dev
- Repository
- https://github.com/open-feature/flagd
- License
- Apache-2.0 — reported by the GitHub API, verified 2026-09-17
- Stars
- 996 · last commit 2026-09-15
/tools.json,
against the tool.schema.json
schema, using the roles.json
vocabulary. Start at /llms.txt.