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Frameshift

Same model. Different frame.

Frameshift is a persona engine for AI coding agents. It packages complete behavioral identities -- not instruction lists -- as versioned, signed, composable packs that you install per-project and switch on demand.

A persona survives long sessions, surprising inputs, and the slow drift that turns careful agents into sloppy ones around turn 200.

Quick links

• Getting Started -- Install and activate your first persona
• How It Works -- Pack system, content addressing, rendering pipeline
• Automate Mode -- Let the engine pick the right persona for the task
• Persona Catalog -- All 37 available personas
• Architecture -- Crate map and dependency graph
• Writing Personas -- Author your own persona packs
• CLI Reference -- Every command and flag
• MCP Server -- Agent integration via Model Context Protocol
• Memory Integration -- Pluggable memory backends
• Growth System -- Local learning that persists across sessions
• Pack Format -- Content-addressed signed tarballs
• Composition -- Extend and mix personas
• Conformance -- Test bundles and upgrade regression gates
• Configuration -- Server, daemon, and environment variables

What Frameshift is not

Frameshift is not a prompt template library. Templates drift under pressure because they encode priorities as ranked lists. Frameshift encodes identity as a coherent stance using Schubert's L1/L2/L3 behavioral architecture, which survives context erosion where ranked lists collapse.

Frameshift is not a model fine-tune. It works with any agent that reads AGENTS.md, CLAUDE.md, or GEMINI.md -- Claude Code, Codex CLI, Gemini CLI, Cursor, Windsurf, Cline, opencode, Goose, and others. Same model, different frame.

License

The runtime, engine, and tooling are licensed under Elastic License 2.0. Persona content in personas/ is open source.