m3-forget

m3-forget is a skill for Claude Code from skynetcmd/m3-memory. It costs 16 tokens per session (239 once invoked), scanned A, original, Apache-2.0.

A confirmation-based tool for permanently deleting a saved memory. It first retrieves the memory and asks the user to confirm its identifier before removal.

In plain words
What is it for?
Finding a specific memory, displaying what will be deleted, confirming the request, and then removing it from the memory store.
Why use it?
It lowers the risk of deleting the wrong note and distinguishes permanent deletion from softer privacy removal options.

Skill for Claude Code

Written for Claude Code: $ARGUMENTS substitution.

Part of the m3 plugin — 16 skills, 15 commands, 2 agents, 3 hooks, 1 MCP server shipped together

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.

agentmods
npx agentmods add skills/skynetcmd/m3-memory/m3-forget
Any agent
npx skills add skynetcmd/m3-memory --skill m3-forget
Clone the repo
git clone --depth 1 https://github.com/skynetcmd/m3-memory

Made for: Claude Code.

Or install m3, the plugin that ships this one along with the rest of its 16 skills, 15 commands, 2 agents, 3 hooks, 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 m3-forget

README.md
[![agentmods](https://agentmods.dev/badge/skills/skynetcmd/m3-memory/m3-forget.svg)](https://agentmods.dev/skills/skynetcmd/m3-memory/m3-forget)
Your own site
<a href="https://agentmods.dev/skills/skynetcmd/m3-memory/m3-forget"><img src="https://agentmods.dev/badge/skills/skynetcmd/m3-memory/m3-forget.svg" alt="Measured on agentmods" height="20"></a>
Per session 16 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 239 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00016 $0.00239
Opus 5 $0.00008 $0.00120
Sonnet 5 $0.00003 $0.00048
Haiku 4.5 $0.00002 $0.00024

Measured 6d ago against content hash 2ebdd9cce35e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

m3-forget 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 6d 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.

.antigravity-plugin/skills/m3-forget/SKILL.md · 28 lines

What it actually says

M3 Forget

When to Use

Use this skill when the user wants to delete a specific memory from their store. Always verify and confirm the deletion to prevent accidental loss of important information.

Instructions

Confirm before delete

Step 1 — fetch the target via m3:memory_get with id="$ARGUMENTS". Show the user:

About to delete:
  id:    <uuid>
  title: <title>
  type:  <type>
  content: <first 200 chars>

Step 2 — ask: "Type the first 8 chars of the id to confirm deletion, anything else to abort."

Step 3 — on match, call m3:memory_delete with the full id. On mismatch, abort and say "skipped — id mismatch."

If the user wants a softer alternative, mention m3:gdpr_forget (Article 17 — sets a tombstone instead of hard delete) or just writing a superseding memory via /m3:save.

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. 6d ago First seen · 28 lines · 16 tokens per session scan A 2ebdd9cce35e

Subscribe to this mod's changes

m3-forget is a skill published in the GitHub repository skynetcmd/m3-memory (23 stars, last pushed 6d ago), licensed Apache-2.0. It adds 16 tokens to every session and 239 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 2026-08-30.

Related

Other skills, from other repositories