Getting it into your agent
This one installs as part of its plugin. Adding the marketplace and installing the plugin brings it with everything else the plugin ships.
/plugin marketplace add jojoprison/mnemo/plugin install mnWrote 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.
[](https://agentmods.dev/skills/jojoprison/mnemo/health)<a href="https://agentmods.dev/skills/jojoprison/mnemo/health"><img src="https://agentmods.dev/badge/skills/jojoprison/mnemo/health.svg" alt="Measured on agentmods" height="20"></a>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.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00123 | $0.07409 |
| Opus 5 | $0.00062 | $0.03705 |
| Sonnet 5 | $0.00025 | $0.01482 |
| Haiku 4.5 | $0.00012 | $0.00741 |
Grade A, and why
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 yesterday.
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.
How it starts
The opening of the file, as written. The whole thing — 319 lines — stays where its author put it; the contents beside it link to each section on GitHub.
mn:health — Vault Health Check & Analytics
Invocation marker (both runtimes): begin your reply with the exact line
🧠 mn:health (mnemo) → running— the user-visible confirmation that this skill actually loaded. Emit it once per invocation, before any other output.
Portable paths
Resolve <mnemo-root> once to the absolute plugin root before reading bundled files or running bundled scripts. In Claude Code, use ${CLAUDE_PLUGIN_ROOT}; in Codex, derive it from this loaded SKILL.md path (skill directory → skills/ → plugin root). Replace <mnemo-root> with that quoted absolute path in every command — never execute the placeholder literally and never hunt versioned cache directories.
When another mnemo skill must run, use the runtime-native path: Claude Code invokes mn:<skill> through its Skill tool; Codex reads <mnemo-root>/skills/<skill>/SKILL.md completely and follows it with the prepared input. For user-facing explicit syntax, render /mn:<skill> in Claude Code and $mnemo:<skill> in Codex.
Run a comprehensive health check on the Obsidian vault: orphans, broken links, missing sections, stale notes, and growth statistics.
Prerequisites & config
Obsidian must be open; obsidian CLI on PATH. Config at ~/.mnemo/config.json requires vault, taxonomy, taxonomy_roles, and links_section for new configs; the deterministic legacy Zettelkasten fallback remains supported. Validate the exact role contract in Step 4 before semantic labeling. Schema in <mnemo-root>/references/config-schema.md.
Workflow
Steps 1-4 run in parallel — single assistant message batching the independent indexed reads (orphans, unresolved, tag counts; Step 4 reuses Step 3's tag output, no extra call). Use the bundled shell-free helper with single-quoted JSON herestrings (<<< '…') for every dynamic value. These queries take ~180ms total vs ~720ms sequential.
Step 0: claude-mem Sanity Check (optional, ~20ms)
Claude Code only. In Codex, skip this step and omit the ⚠️ claude-mem report line — do not inspect another runtime's plugin cache. In Claude Code, surface two common gotchas if claude-mem is installed and enabled. If cascade.claude_mem.enabled is false, skip this section silently — many users intentionally disable claude-mem for CPU/RAM reasons.
What ships with it
1 file beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
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.
- yesterday Changed · -26 lines 1fb42b55c237
- 7d ago First seen · 345 lines · 123 tokens per session scan A 7b091f53bdde
health is a skill published in the GitHub repository jojoprison/mnemo (6 stars, last pushed 2d ago), licensed MIT. It adds 123 tokens to every session and 7,409 once invoked, about $0.0006 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 2026-08-31.
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