Agent Skill

J Space skill

j-spaceTiger3807861189/J-Space-Cognition-Suitej-space/SKILL.md

Operate a selective workspace for complex reasoning, long tasks, repository engineering, coordinated agents, and authorized security analysis. Use when work requires durable state, evidence, cross-file consistency, or recovery; keep direct answers lightweight.

3.0kApache-2.0

always on

47 tokname + description

once used

2,420 tokSKILL.md body

bundled files

254 scripts

repo stars

3.0kGitHub

Install the J Space skill

Skills CLI (Claude Code, Codex, Cursor and others)

npx skills add https://github.com/Tiger3807861189/J-Space-Cognition-Suite --skill j-space

Claude Code, by hand (all projects)

git clone --depth 1 https://github.com/Tiger3807861189/J-Space-Cognition-Suite.git /tmp/J-Space-Cognition-Suite
mkdir -p ~/.claude/skills
cp -R /tmp/J-Space-Cognition-Suite/j-space ~/.claude/skills/j-space

For one project only, copy the folder into .claude/skills/ in that project instead. The agent picks it up when a task matches its description.

What it costs your context

Agent Skills load in three steps. Tokens counted with the o200k tokenizer; your model's count will differ a little.

When	What loads	Cost
Every session	Name and description	47 tok
When the agent uses it	The SKILL.md instructions	2,420 tok
Only if opened	25 bundled files (358 KB)	varies

Until it is used, j-space costs about 29× less than the median MCP server we measured (1,363 tokens on every turn). Skills vs MCP study

Checks

Ships scripts the agent can run. Read them before installing.

Checked 2026-10-22 · method

What's inside

The headings of its SKILL.md. Read the full file on GitHub.

J-Space
The J-Space Premise
Establish the live workspace
The gate
Operate the loop
The three registers
Routing
The invariants
When it slips