Which agents work with it?

Any agent that reads skills from a directory. Claude Code, Codex and Gemini CLI read it natively; Cursor and VS Code connect over MCP.

The voice runs on your own machine, so there is nothing to meter. The first run downloads it, about 340 MB.

Yes. The skill is MIT-licensed and the authoring format is public.

gstack 1.91.158.0 lets you switch off the plan-mode preamble in every skill

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gstack 1.91.158.0 for Claude Code: a new plan_mode_preamble setting leaves the plan-mode sections out of every installed skill, about 1.6 KB each across 50 Claude skills, for people who never use plan mode. It applies on the next setup run and defaults to on. Also: gstack-relink now refreshes the router alias after re-rendering the router. Release notes: https://github.com/garrytan/gstack/blob/main/CHANGELOG.md#1911580---2026-10-19 Commits: https://github.com/garrytan/gstack/commits/main

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Preamble

gstack can now leave the plan-mode preamble out of every skill

plan_mode_preamble off

each skill shedsabout 1.6 KB, across 50 Claude skills

PreambleSetupHostsFixYour turn

garrytan/gstack · CHANGELOG.md · 1.91.158.0

gstack skills can now leave out the plan mode preamble, for anyone who never uses plan mode. Turn the new setting off, and 50 Claude skills each drop about one point six kilobytes.

Setup

The choice applies on your next setup run

Off: every host’s skills render without the two plan-mode sections

On, the default: every skill file stays byte-for-byte the same

PreambleSetupHostsFixYour turn

garrytan/gstack · CHANGELOG.md · 1.91.158.0

Switching it off takes effect on your next setup run, which renders every host's skills without the two plan mode sections. Leave it on, the default, and nothing changes.

Hosts

It matters for the hosts that have a plan mode

Claude, Copilot, OpenCode lose the sections

Other hosts already render them empty

“PLAN MODE EXCEPTION” commands keep their marker

PreambleSetupHostsFixYour turn

garrytan/gstack · CHANGELOG.md · 1.91.158.0

That means Claude, Copilot and OpenCode, the hosts with a plan mode. The others already render those sections empty. Commands flagged as plan mode exceptions keep their always run marker.

Fix

gstack-relink now refreshes the router alias after it rebuilds the router

stale aliaswith disabled skills, it listed every skill until the next relink

PreambleSetupHostsFixYour turn

garrytan/gstack · CHANGELOG.md · 1.91.158.0

One fix rides along. gstack-relink now refreshes the router alias after rebuilding the router. Before, if you had disabled skills, the alias kept listing all of them until the next relink.