# Capsule Maturity Levels

Canonical page: https://capsules.run/research/maturity-levels/

Capsule maturity measures continuity of work across boundaries. It is not a measure of data completeness. It asks whether the work can continue.

## Levels

## L0 Static Artifact

A valid capsule exists, but it does not enable meaningful continuation.

## L1 Recorded Work

The capsule records real activity, but the intent and continuation path remain implicit.

## L2 Executable Capsule

The capsule defines intent, plan, capabilities, resources, and output contracts clearly enough for a single actor to execute.

## L3 Transferable Continuation

The capsule can be handed from one actor to another with state snapshots, checkpoint events, and a clear next action.

## L4 Composable System

The capsule can orchestrate other capsules as modular child artifacts and absorb their results into a parent chain.

## L5 Cross-Environment Continuity

The capsule survives transfer across runtimes, models, and systems without unacceptable divergence.

## Current Roadmap Alignment

- Protocol `v0.6`: current foundation for signed envelopes, deterministic package shape, manifest content indexing, event chains, trust metadata, and browser validation.
- SDK work: active JavaScript reference implementation plus Python parity work and additional verifier experiments.
- Protocol `v1.0`: target for stronger cross-implementation conformance and full interop.