packages/preset
September 6, 2026 · View on GitHub
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Summary
The preset group provides per-session agent composition: an agent preset is a directory holding one agent.cordis.yml, and a session composed from a preset runs that preset's tools, prompt sections, and skills while every other session keeps its own. agent-presets owns the roster — discovery over configured roots plus the harness home, the guarded per-agent mount, and copy-only authoring — and persona supplies the composable row that lets a preset change an agent's identity and not only its tools. Together they let one process run several differently composed agents at once.
Table of Contents
Packages
| Package | Role | ctx key |
|---|---|---|
agent-presets | Preset roster, discovery over trusted and user roots, per-agent composition, copy-only authoring | ctx.agentPresets |
persona | The composable persona row a preset mounts to shadow or replace the deployment persona | — |
Related documentation
AgentPresetsreference — discovery, mounting, inheritance, and recomposition.- Scope subsystem — scope keys and the parent chain the mount uses to join agents.
- System prompt subsystem — how preset prompt sections register and assemble.
- Per-session agent presets note — design rationale and alternatives.
- Per-preset standing mounts note — why the mount is standing and shared.
The presets the deployment ships live in agent-presets/presets/ — one directory per preset, and that directory listing is the roster; naming them here too would be a second list to keep in step.
Dev Note
Working context for maintainers — click to expand
None.