gse-preview

gse-preview is a command for Claude Code from nicolasguelfi/gensem. It costs 21 tokens per session (4,467 once invoked), scanned A, original, no licence file.

A command that simulates the artefacts a production plan would create before the plan is carried out.

In plain words
What is it for?
It is for previewing planned artefacts at different levels of detail.
Why use it?
It lets you inspect the expected result before making production changes.

Command for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the gse plugin — 48 skills, 24 commands, 11 agents, 2 hooks shipped together

Good fit It is for previewing planned artefacts at different levels of detail.

Compare 6 commands from other repositories ↓
Install with agentmods
npx agentmods add commands/nicolasguelfi/gensem/gse-preview
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/nicolasguelfi/gensem

Made for: Claude Code.

Or install gse, the plugin that ships this one along with the rest of its 48 skills, 24 commands, 11 agents, 2 hooks.

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 gse-preview

README.md
[![agentmods](https://agentmods.dev/badge/commands/nicolasguelfi/gensem/gse-preview.svg)](https://agentmods.dev/commands/nicolasguelfi/gensem/gse-preview)
Your own site
<a href="https://agentmods.dev/commands/nicolasguelfi/gensem/gse-preview"><img src="https://agentmods.dev/badge/commands/nicolasguelfi/gensem/gse-preview.svg" alt="Measured on agentmods" height="20"></a>
Per session 21 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 4,467 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 unknown 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 $0.00021 $0.04467
Opus 5 $0.00010 $0.02233
Sonnet 5 $0.00004 $0.00893
Haiku 4.5 $0.00002 $0.00447

Measured 5d ago against content hash e92376a4409f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

gse-preview 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 5d 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.

gse-one/plugin/commands/gse-preview.md · 364 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

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. 5d ago First seen · 364 lines · 21 tokens per session scan A e92376a4409f

Subscribe to this mod's changes

gse-preview is a command published in the GitHub repository nicolasguelfi/gensem (4 stars, last pushed 1mo ago), with no licence file. It adds 21 tokens to every session and 4,467 once invoked, about $0.0001 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 2026-09-03.