m3-health

m3-health is a skill for Claude Code from skynetcmd/m3-memory. It costs 24 tokens per session (468 once invoked), scanned A, original, Apache-2.0.

A health-check routine for the m3-memory system, which stores an agent’s notes and chat history on the computer. It checks the installed version, files, database, and agent hooks.

In plain words
What is it for?
Use it to run the m3-memory doctor command and report its complete output, followed by a brief interpretation.
Why use it?
It helps find configuration, installation, service, or database problems without checking each part manually.

Skill for Claude Code

Written for Claude Code: SessionEnd hook event.

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

Good fit Use it to run the m3-memory doctor command and report its complete output, followed by a brief interpretation.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/skynetcmd/m3-memory/m3-health
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 skynetcmd/m3-memory --skill m3-health
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-health

README.md
[![agentmods](https://agentmods.dev/badge/skills/skynetcmd/m3-memory/m3-health/github.svg)](https://agentmods.dev/skills/skynetcmd/m3-memory/m3-health)
Your own site
<a href="https://agentmods.dev/skills/skynetcmd/m3-memory/m3-health"><img src="https://agentmods.dev/badge/skills/skynetcmd/m3-memory/m3-health/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 m3-health

Your own site · 80×15
<a href="https://agentmods.dev/skills/skynetcmd/m3-memory/m3-health"><img src="https://agentmods.dev/badge/skills/skynetcmd/m3-memory/m3-health.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 24 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 468 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00024 $0.00468
Opus 5 $0.00012 $0.00234
Sonnet 5 $0.00005 $0.00094
Haiku 4.5 $0.00002 $0.00047

Measured 10d ago against content hash ba7029b9a0bb, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

m3-health 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 10d 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-health/SKILL.md · 47 lines

What it actually says

M3 Health

When to Use

Use this skill when the user runs a system health check or when you want to diagnose issues with the m3-memory configuration, CLI executables, background services, or databases.

Instructions

Step 1 — run the doctor command, trying the resolvers below in order. Stop at the first one that returns exit 0; do not run the remaining ones.

# 1. Plain CLI, if mcp-memory is on PATH:
mcp-memory doctor

# 2. Module form, works whenever the m3_memory package is importable:
python -m m3_memory.cli doctor

# 3. Repo-local venv (developer case, run from the repo root):
.venv/Scripts/python.exe -m m3_memory.cli doctor   # Windows
.venv/bin/python -m m3_memory.cli doctor           # macOS/Linux

Step 2 — print the full doctor output verbatim (no paraphrasing).

Step 3 — append exactly ONE short line of interpretation. Examples:

  • all healthy.
  • chatlog DB never captured — run /m3:install.
  • Antigravity SessionEnd hook off — run mcp-memory chatlog init --apply-gemini.

Do not write a paragraph. One line. The user can read the doctor output themselves.

Step 4 — if (and only if) doctor reported a repairable problem (a stale/dead agent config path, a duplicate bridge, a disabled plugin, or a "run doctor --fix" hint), OFFER to auto-repair. doctor --fix repoints dead config paths, de-duplicates MCP registrations, and re-syncs agent hooks — it is non-destructive to data. Run the same resolver that worked above, with --fix:

mcp-memory doctor --fix
# or: python -m m3_memory.cli doctor --fix

Then re-run plain doctor to confirm the fix took. If doctor was already all healthy, do NOT run --fix.

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. 10d ago First seen · 47 lines · 24 tokens per session scan A ba7029b9a0bb

Subscribe to this mod's changes

m3-health is a skill published in the GitHub repository skynetcmd/m3-memory (24 stars, last pushed today), licensed Apache-2.0. It adds 24 tokens to every session and 468 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.

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