# Install flagd with Homebrew Feature flag daemon with a Unix philosophy. Version 0.16.1 via Homebrew; verified 2026-07-27. ## Install ```sh sudo av install brew:flagd ``` Additional install commands: ### macOS - Homebrew (100%): ```sh brew install flagd ``` Evidence: local Homebrew formula metadata ## Package facts - **Package key:** brew:flagd - **Package manager:** Homebrew - **Package manager page:** - **Version:** 0.16.1 - **Source summary:** Feature flag daemon with a Unix philosophy - **Homepage:** - **Repository:** - **Upstream docs:** - **License:** Apache-2.0 - **Source archive:** - **Last updated:** 2026-07-27T15:40:04Z - **Generated:** 2026-08-04T22:13:35+00:00 ## Executables - flagd (cli) - flagd (alias) ## Build dependencies - go ## Install behavior - Post-install hook: not defined - Bottle: available on arm64_linux, arm64_sequoia, arm64_sonoma, arm64_tahoe, sonoma, x86_64_linux ## Freshness - Page generated: 2026-08-04 - Package-manager version: 0.16.1 - Package-manager updated: 2026-07-27 - Local data: ok - Upstream repository: https://github.com/open-feature/flagd - info: No cached GitHub release or tag data was available. ## Project history and usage flagd is an OpenFeature-compliant feature flag evaluation engine and daemon designed around a Unix-style command-line interface rather than a bundled management UI. ### Project history The public GitHub release stream begins in June 2022. Upstream positions flagd as a ready-made open-source OpenFeature backend system: a separate process, sidecar, central service, or in-process engine for evaluating feature flags. The documentation explicitly says flagd does not include a UI, management console, or persistence layer. Instead, it is configured through a POSIX-style CLI and supplied with flag definitions from files, HTTP endpoints, Kubernetes custom resources, or proto-compliant gRPC services. By 2023 and 2024 the release train had split into related components such as flagd, core, flagd-proxy, and Kubernetes-oriented proxy artifacts, reflecting the project's role inside the broader OpenFeature ecosystem. ### Adoption history flagd's adoption path is tied to OpenFeature: applications use an OpenFeature SDK plus a flagd provider, while operations teams can run flagd as a binary, container image, service, sidecar, or Kubernetes-integrated component. The quick-start workflow demonstrates containerized use on port 8013, JSON flag definitions, cURL evaluation calls, and live updates without restarting the daemon. This makes flagd attractive for teams that want vendor-neutral feature flag evaluation without committing to a hosted flag-management product. ### How it is used Typical CLI use starts flagd with a URI pointing at a local or remote flag definition. The daemon exposes evaluation APIs over HTTP or gRPC, watches flag definitions for changes, and supports boolean, string, number, and JSON flag values, targeting rules, progressive rollouts, and pseudorandom assignments for experiments. The CLI reference lists ~/.agent.yaml as the default config file. The main commands include flagd start and flagd version. ### Why package nerds care flagd is package-nerd significant because it turns feature flags into a local daemon plus protocol boundary: install a binary, point it at flag data, wire it to OpenFeature providers, and keep flag evaluation independent of a SaaS control plane. Its packaging also reflects contemporary cloud-native CLI distribution: GitHub releases, container images, Kubernetes integration, gRPC/HTTP APIs, OpenTelemetry-oriented observability, and a docs site generated from repository documentation. ### Timeline - 2022: First public GitHub release. - 2023: 0.3.x through 0.6.x releases expanded the early daemon and proxy release train. - 2024: 0.11.x releases continued alongside core and flagd-proxy components. - 2025: 0.12.x releases published for flagd, core, and flagd-proxy. ### Related projects - OpenFeature, OpenFeature SDKs, flagd providers, OpenFeature Operator, Kubernetes custom resources, OpenTelemetry. ### Sources - - - - - - ## Security Notes narrow executable package without higher-risk signals. - **Geiger risk:** green / low - narrow executable package without higher-risk signals ## Configuration and credential file locations These source-backed paths show where this package keeps local settings or durable credentials. Automic Vault can use them as review targets for secret scanning, migration, and command approval. ## Configuration files - Unix: ~/.agent.yaml ## Source Database Details - **Source Database:** Homebrew formula API - **Tap:** homebrew/core - **Full Name:** flagd - **Version Scheme:** 0 - **Revision:** 0 - **Head Version:** HEAD - **Bottle Stable Root URL:** - **Deprecated:** no - **Disabled:** no - **Keg Only:** no - **URL Keys:** head, stable ## Related links - [Terminal utility packages](https://pkg.so/terminal-utilities/) - Matched terminal and command-line workflow metadata. - [Text processing packages](https://pkg.so/text-processing-tools/) - Matched text, document, or structured-data processing metadata. - [Developer build packages](https://pkg.so/developer-build-tools/) - Matched build, compiler, generator, or developer workflow metadata. - [Networking and protocol packages](https://pkg.so/networking-protocol-tools/) - Matched network, protocol, or remote-service metadata. - [go](https://pkg.so/brew/go/) - Build dependency declared by Homebrew. - [ldcli](https://pkg.so/brew/ldcli/) - Shares pkgdb curated category or tags: cli, developer-tools, feature-flags. - [ld-find-code-refs](https://pkg.so/brew/ld-find-code-refs/) - Shares pkgdb curated category or tags: cli, developer-tools, feature-flags. - [go-feature-flag-relay-proxy](https://pkg.so/brew/go-feature-flag-relay-proxy/) - Shares pkgdb curated category or tags: cli, developer-tools, feature-flags, openfeature. - [grpc](https://pkg.so/brew/grpc/) - Shares pkgdb curated category or tags: cli, developer-tools, grpc. - [grpcurl](https://pkg.so/brew/grpcurl/) - Shares pkgdb curated category or tags: cli, developer-tools, grpc. - [grpcui](https://pkg.so/brew/grpcui/) - Shares pkgdb curated category or tags: cli, developer-tools, grpc. - [protoc-gen-go-grpc](https://pkg.so/brew/protoc-gen-go-grpc/) - Shares pkgdb curated category or tags: cli, developer-tools, grpc. - [resterm](https://pkg.so/brew/resterm/) - Shares pkgdb curated category or tags: cli, developer-tools, grpc. ## Combined YAML source View the package source record on GitHub. [combined/flagd.yml](https://github.com/mxcl/pkgdb/blob/main/combined/flagd.yml) ## Sources - pkg.so package database - Geiger risk classifier - package-page enrichment - curated configuration and credential file locations - curated package history - package version freshness - pkgdb category and tag curation - package relationship graph - cross-ecosystem install command graph