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Status & Roadmap

High-level phases, current status, and near-term milestones for Lex, the open-source memory and policy engine — now with AX (Agent eXperience) as a first-class design principle.

Last updated: December 6, 2025

Current Status

🚀 Lex 2.0.0 — AX-Native Memory Core

Lex 2.0.0 introduces AX (Agent eXperience) as a first-class design principle. This release stabilizes AX guarantees in code and public tooling.

  • AXError Schema — Structured errors with recovery actions for agents
  • Frame Schema v3 — Zod validation with runner integration fields
  • CLI JSON Output — --json on remember, timeline for machine-parseable output
  • Recall Semantics — FTS5 case-insensitive, hyphen-safe search
  • Available now: npm install @smartergpt/lex@2.0.0

✓ Lex 1.0.2 — Stable Contracts (legacy)

Lex 1.0.x is the previous stable release that stabilized core contracts. New AX-native features are in Lex 2.0.0; use 1.0.x only if you require the original contract surface.

  • Frames — Episodic memory with typed receipts and deterministic recall
  • lexmap.policy.json — Module boundaries and architectural contracts
  • lex.yaml — Intent-level workflow contracts (Docker Compose for AI)
  • CLI commands: remember, recall, check, timeline
  • Install: npm install @smartergpt/lex

Roadmap

This roadmap tracks the Lex open-source repository. Development is guided by AX principles: deterministic first, structured over conversational, fail loud with recovery paths.

Focus Area Milestone Status Date
Foundation Lex 1.0.0 — Stable Contracts (historical)

Core contracts (Frames, lexmap.policy.json, lex.yaml) stabilized and published to npm. First stable release (legacy baseline).

 Complete Nov 28, 2025
AX Lex 2.0.0 — AX-Native Core

AXError schema, Frame v3 validation, CLI JSON output, improved recall. First AX-native release.

 Complete Dec 1, 2025
MCP MCP/CLI Alignment

Expose timeline, code-atlas, policy-check via MCP tools. Full parity between CLI and MCP surfaces.

 In Progress Dec 2025
Governance Turn Cost & Capability Tiers

Receipt protocol for disciplined failure, capability tier classification (Senior/Mid/Junior), turn cost measurement for coordination optimization.

 Complete Dec 6, 2025
CLI Instructions Generator

lex instructions init/generate/check — IDE-aware instruction block generator for Copilot, Cursor, and other AI assistants.

 Planned Q1 2026
Behavior LexSona — Behavioral Layer (socket available)

Lex 2.0.0 exposes a LexSona behavioral socket so integrators can build persona/behavioral layers. Private work in LexSona (0.2.0) adds offline-capable persona modes so behavior remains useful when memory access is limited; broader standalone LexSona integrations are planned for 2026.

 In Progress 2026
Stable Lex 2.0.0 — Released

Production-ready AX-native release (governance, MCP alignment, and instructions CLI available). Released to npm.

 Complete Dec 6, 2025

AX: Agent eXperience

Lex 2.0 is built on AX — the discipline of designing systems where agents are first-class users. AX augments UX and DX; it doesn't replace them.

Deterministic First

AI can't debug randomness. Lex outputs are stable and reproducible.

Structured Output

JSON over prose. --json on all core commands.

Fail Loud, Recover Clear

AXError includes nextActions[] so agents know what to try next.

Memory is a Feature

Frames give agents context. Without memory, AI is expensive and dumb.

Read the full AX essay →

Learn more about the platform

Explore our documentation and see how merge pyramids work.

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