Nine capabilities, zero lock-in. FlagDrop is the smallest surface area that still handles every serious feature-flag workflow — gradual rollouts, targeting, kill switches, audit trails, and AI-native control.
FlagDrop is architecturally different from every other vendor. We don't serve evaluation requests. We write signed JSON to your S3, GCS, or Azure Blob bucket and SDKs read from it. Your traffic stays in your VPC, your region, your compliance envelope.
Type-safe getters for every primitive. Hot-reload on bucket change. Deterministic bucketing. 2-4kb gzipped. No WASM. No native bindings. No background daemon. If you can read JSON, you have a FlagDrop SDK.
Rule engine is a transparent JSON AST — not an opaque blob behind a GUI. Check it into Git, diff it in PRs, let your AI agent reason about it. Target by user, plan, geo, device, session, anything you pass in.
Ramp from 0 → 100% with a slider or a cron. Auto-promote staged flags on a schedule. Kill a flag instantly — a single write to your bucket revokes it across every SDK in under 5 seconds.
Our MCP server exposes every FlagDrop action as a tool. Your coding agent creates flags where it writes the code, scopes rollouts to the right env, and appends to the audit log just like a human would.
Scaffolds a new flag with sensible defaults and a draft PR.
Flip a boolean in any environment. Bounded by per-agent permissions.
Gradual ramp with optional targeting rule.
Attach a JSON AST rule. Validates before push.
Restore any prior config. Every push is versioned.
Read who changed what, when, and from where.
Pick the bucket. Pick the region. Pick the KMS key. FlagDrop respects it. Works for EU data residency, HIPAA, FedRAMP-adjacent setups, and the one legal team that won't let you use anything that touches us-east-1.
Immutable log of every push: who, when, from where, with what rationale. Versioned config. One-click rollback. Export to S3 for SIEM ingestion.
Every config signed with ed25519. SDKs verify signatures before applying. Per-project API keys and granular role scoping.
Add every engineer, PM, designer, and on-call agent. Guest access for contractors. Per-project roles. No add-on fees. No "contact sales." If someone at your company needs to flip a flag, they should be able to.
Free tier, no card, zero migration lock-in. If you like it, you pay $49/mo. If you don't, you keep the bucket.