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.
npx skills add potato-castle/mono-memory-mcp --skill mono-savegit clone --depth 1 https://github.com/potato-castle/mono-memory-mcpWrote 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/potato-castle/mono-memory-mcp/mono-save)<a href="https://agentmods.dev/skills/potato-castle/mono-memory-mcp/mono-save"><img src="https://agentmods.dev/badge/skills/potato-castle/mono-memory-mcp/mono-save/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.
<a href="https://agentmods.dev/skills/potato-castle/mono-memory-mcp/mono-save"><img src="https://agentmods.dev/badge/skills/potato-castle/mono-memory-mcp/mono-save.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00016 | $0.00233 |
| Opus 5 | $0.00008 | $0.00117 |
| Sonnet 5 | $0.00003 | $0.00047 |
| Haiku 4.5 | $0.00002 | $0.00023 |
Grade A, and why
mono-save 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.
What it actually says
Mono Save
Constraints
- MUST NOT use AskUserQuestion tool. Use plain text output and wait for reply.
- MUST translate content to English before saving.
Steps
-
Read
authorandprojectfrom CLAUDE.md "Recording Format" section.- If not found, ask in plain text.
-
If user provided content after the command (e.g.
/mono-save fixed login bug), use it. Otherwise ask:What would you like to save? -
Ask:
Tags (comma-separated, or press Enter to skip): -
Call
memory_save(author, project, content, tags). -
Print:
Saved! | Field | Value | |---------|----------------| | ID | `<id>` | | Author | `<author>` | | Project | `<project>` | | Tags | `<tags>` |
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.
- 10d ago First seen · 42 lines · 16 tokens per session scan A 6a6921b89bf4
mono-save is a skill published in the GitHub repository potato-castle/mono-memory-mcp (3 stars, last pushed 6mo ago), licensed MIT. It adds 16 tokens to every session and 233 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 2026-08-31.
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