Getting it into your agent
One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.
npx skills add OutlineDriven/odin-claude-plugin --skill isolate-workspace-gategit clone --depth 1 https://github.com/OutlineDriven/odin-claude-pluginWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/outlinedriven/odin-claude-plugin/isolate-workspace-gate)<a href="https://agentmods.dev/skills/outlinedriven/odin-claude-plugin/isolate-workspace-gate"><img src="https://agentmods.dev/badge/skills/outlinedriven/odin-claude-plugin/isolate-workspace-gate.svg" alt="Measured on agentmods" height="20"></a>- NVIDIA SkillSpector pass
What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00064 | $0.00969 |
| Opus 5 | $0.00032 | $0.00485 |
| Sonnet 5 | $0.00013 | $0.00194 |
| Haiku 4.5 | $0.00006 | $0.00097 |
Grade A, and why
isolate-workspace-gate scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 4d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
How it starts
The opening of the file, as written. The whole thing — 54 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Isolate workspace gate
Contract
| Field | Bound contract |
|---|---|
| Trigger | Starting feature work that needs isolation, or before executing an implementation plan. |
| Authority | Reversible-local: may create a git worktree, add and commit a gitignore entry, symlink hooks, and run setup. Roll back via git worktree remove or revert the gitignore commit. |
| Side effect | May create a git worktree with the native harness tool preferred, add and commit a gitignore entry if the target directory is not already ignored, symlink the parent hooks directory, and run project setup. |
| Done | An isolated workspace path plus branch is reported, or in-place work is reported; setup has run; and the baseline test suite is green, or failures are surfaced with a proceed-or-investigate question. |
Inputs
- Branch name (required): the feature branch to create or attach.
- Base branch (optional): defaults to the current HEAD branch.
- Setup command (optional): project-specific setup to run inside the worktree (e.g.
pnpm install --frozen-lockfile,make setup). If omitted, no setup step runs.
Procedure
-
Detect environment. Run
git rev-parse --git-common-dirandgit rev-parse --git-dir. IfGIT_COMMON_DIRdiffers fromGIT_DIR, the session is already inside a worktree. If the repo root contains a.gitmodulesfile and the current directory is a submodule, stop and report that isolation must run from the superproject. -
Determine isolation mode. If already inside a worktree and the user has not requested a new one, report the existing worktree path and branch, then skip to step 6. Otherwise proceed to create a new worktree.
-
Create worktree. Run
git worktree add <path> -b <branch-name> <base-branch>using the native harness tool preferred by the environment. If the branch already exists, omit-band attach to the existing branch. If worktree creation fails (disk full, path conflict, locked index), fall back to in-place work on the current branch and report the fallback reason.
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 4d ago First seen · 54 lines · 64 tokens per session scan A b2adde42457a
isolate-workspace-gate is a skill published in the GitHub repository OutlineDriven/odin-claude-plugin (35 stars, last pushed yesterday), licensed Apache-2.0. It adds 64 tokens to every session and 969 once invoked, about $0.0003 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-04.
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