{"categories":[{"label":"Application Frameworks","url":"https://skillfed.io/packages/category/software-development-libraries-application-frameworks/4"}],"enrichment":{"capability":"Evaluates feature flags using JSON logic and custom operators (fractional, semantic versioning, string matching) as a reference implementation for the OpenFeature flagd evaluator.","skillfed_tags":["feature-flags","openfeature","flag-evaluation"],"use_cases":["Evaluate feature flags locally in Python applications using JSON logic targeting rules without requiring a remote flagd service.","Implement fractional rollouts and canary deployments by resolving flag variants based on custom operators and context.","Test flag evaluation logic in unit tests by directly instantiating and configuring the evaluator with flag definitions.","Build custom feature flag management systems that need a reference-grade evaluator compatible with the OpenFeature specification.","Resolve semantic version-based feature flags for version-gated functionality or compatibility checks."],"what_it_does":"openfeature-flagd-core is a reference implementation of the flagd evaluator for the OpenFeature Python SDK contrib project. It parses flag definitions, applies targeting rules written in JSON logic, and resolves flag variants using custom operators for fractional rollouts, semantic version comparisons, and string matching. The package provides the core evaluation engine that sits between flag definitions and the OpenFeature SDK, handling the logic of determining which variant a flag should return given its configuration and evaluation context.\n\nThe package is designed as a modular component mirroring the Java flagd-core module, making it suitable for projects that need deterministic flag evaluation without external service dependencies. It depends on openfeature-sdk for the broader SDK integration, plus mmh3 for hashing (likely for fractional rollouts), panzi-json-logic for rule evaluation, and semver for version comparisons.","worth_installing":"Yes, if you are building on the OpenFeature Python SDK and need local flag evaluation. The package is actively maintained, has low install friction, carries a permissive Apache 2.0 license, and has no known vulnerabilities. Install only if you are already adopting OpenFeature; it is a specialized component, not a general-purpose library."},"id":"openfeature-flagd-core","links":{"html":"https://skillfed.io/packages/openfeature-flagd-core","md":"https://skillfed.io/packages/openfeature-flagd-core.md","pypi":"https://pypi.org/project/openfeature-flagd-core/"},"maintenance":{"status":"active"},"meta":{"latest_release":"2026-04-30","license_spdx":null,"license_treatment":"permissive","name":"openfeature-flagd-core","python_support":"supports_current","summary":"OpenFeature flagd evaluator core implementation"},"popularity":{"monthly_downloads":208906,"position":9522,"tier":"top_15000"},"security":{"n_vulnerabilities":0},"version":"1.0.0"}