fr-isolation

fr-isolation is a command for Claude Code, OpenCode from derio-net/super-fr. It costs 93 tokens per session (123 once invoked), scanned A, original, MIT.

A command for starting work in a separate Git worktree and development container, keeping changes isolated from the base repository.

In plain words
What is it for?
Use it when feature work must run in isolation, inside a container, or when an isolated workspace needs to be cleaned up.
Why use it?
It reduces the risk that experiments or feature work will affect the main checkout.

Command for Claude CodeOpenCode

Written for Claude Code and OpenCode: $ARGUMENTS substitution, but also installed under .opencode/.

Good fit Use it when feature work must run in isolation, inside a container, or when an isolated workspace needs to be cleaned up.

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/derio-net/super-fr/fr-isolation
Install

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.

Clone the repo
git clone --depth 1 https://github.com/derio-net/super-fr

Made for: Claude Code, OpenCode.

Wrote 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.

agentmods badge for fr-isolation

README.md
[![agentmods](https://agentmods.dev/badge/commands/derio-net/super-fr/fr-isolation/github.svg)](https://agentmods.dev/commands/derio-net/super-fr/fr-isolation)
Your own site
<a href="https://agentmods.dev/commands/derio-net/super-fr/fr-isolation"><img src="https://agentmods.dev/badge/commands/derio-net/super-fr/fr-isolation/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for fr-isolation

Your own site · 80×15
<a href="https://agentmods.dev/commands/derio-net/super-fr/fr-isolation"><img src="https://agentmods.dev/badge/commands/derio-net/super-fr/fr-isolation.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 93 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 123 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00093 $0.00123
Opus 5.5 $0.00037 $0.00049
Sonnet 5.5 $0.00019 $0.00025
Haiku 4.5 $0.00009 $0.00012

Measured 1mo ago against content hash 6ac00f317aa2, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

fr-isolation 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 1mo 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.

.opencode/commands/fr-isolation.md · 11 lines

What it actually says

Use the fr-isolation skill to handle this request.

$ARGUMENTS

Changes

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.

  1. 1mo ago Changed · -1 lines · -8 tokens per session 6ac00f317aa2
  2. 1mo ago First seen · 12 lines · 101 tokens per session scan A d8118fbc51e9

Subscribe to this mod's changes

fr-isolation is a command published in the GitHub repository derio-net/super-fr (2 stars, last pushed yesterday), licensed MIT. It adds 93 tokens to every session and 123 once invoked, about $0.0004 per session on Opus 5.5. 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 2026-08-31.