Feature Flags & Experimentation MCP Servers — LaunchDarkly, GrowthBook, Unleash, Flagsmith, and More

Feature flag and experimentation MCP servers reviewed: LaunchDarkly (~20 stars, hosted, 3 MCP endpoints incl. AgentControl), GrowthBook (22 stars, 14 tools, open-source), Unleash (6 stars, remote MCP+OAuth DCR+evaluate_change), Flagsmith (role-based tooling, Gemini/Codex CLI support), DevCycle (35+ tools, OAuth-backed, hosted remote), Statsig (27 Console API tools, metrics), ConfigCat (14 stars, full management API), Flipt (git-native), VWO FME (3 stars), Optimizely (now public, remote MCP+OAuth, Gartner Leader 2026), PostHog (141 stars, 27 tools, monorepo), Harness FME (10 tools, 139 resource types, incl. Split.io), Amplitude (open beta, experimentation agent), OpenFeature (NEW, vendor-agnostic). Rating: 4.5/5.