lctx-purge

lctx-purge is a skill for Claude Code from Rovemark/logica-context. It costs 0 tokens per session (41 once invoked), scanned A, original, MIT.

A command that removes every entry from a knowledge base, a stored collection of information used to provide context to coding work.

In plain words
What is it for?
Use it after saying “lctx purge” to clear the knowledge base and confirm that the action is complete.
Why use it?
It clears saved context when you no longer want those entries retained.

Skill for Claude Code

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

Part of the logica-context plugin — 5 skills, 1 MCP server shipped together

Good fit Use it after saying “lctx purge” to clear the knowledge base and confirm that the action is complete.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/rovemark/logica-context/lctx-purge
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.

Any agent
npx skills add Rovemark/logica-context --skill lctx-purge
Clone the repo
git clone --depth 1 https://github.com/Rovemark/logica-context

Made for: Claude Code.

Or install logica-context, the plugin that ships this one along with the rest of its 5 skills, 1 MCP server.

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 lctx-purge

README.md
[![agentmods](https://agentmods.dev/badge/skills/rovemark/logica-context/lctx-purge/github.svg)](https://agentmods.dev/skills/rovemark/logica-context/lctx-purge)
Your own site
<a href="https://agentmods.dev/skills/rovemark/logica-context/lctx-purge"><img src="https://agentmods.dev/badge/skills/rovemark/logica-context/lctx-purge/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 lctx-purge

Your own site · 80×15
<a href="https://agentmods.dev/skills/rovemark/logica-context/lctx-purge"><img src="https://agentmods.dev/badge/skills/rovemark/logica-context/lctx-purge.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 41 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 $0.00000 $0.00041
Opus 5 $0.00000 $0.00020
Sonnet 5 $0.00000 $0.00008
Haiku 4.5 $0.00000 $0.00004

Measured 8d ago against content hash aa4dc4a16581, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade A, and why

lctx-purge 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 8d 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.

skills/lctx-purge/SKILL.md · 7 lines

What it actually says

/lctx-purge

Clear all entries from the knowledge base.

Usage

When the user says "lctx purge", call the lctx_purge tool. Confirm action completed.

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. 8d ago First seen · 7 lines · 0 tokens per session scan A aa4dc4a16581

Subscribe to this mod's changes

lctx-purge is a skill published in the GitHub repository Rovemark/logica-context (0 stars, last pushed 3mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 41 tokens. 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.

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