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 agentmods add skills/mcncarl/yichen-skills/yichen-agent-memorynpx skills add mcncarl/yichen-skills --skill yichen-agent-memorygit clone --depth 1 https://github.com/mcncarl/yichen-skillsWrote 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/mcncarl/yichen-skills/yichen-agent-memory)<a href="https://agentmods.dev/skills/mcncarl/yichen-skills/yichen-agent-memory"><img src="https://agentmods.dev/badge/skills/mcncarl/yichen-skills/yichen-agent-memory.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 | $0.00097 | $0.02769 |
| Opus 5 | $0.00048 | $0.01385 |
| Sonnet 5 | $0.00019 | $0.00554 |
| Haiku 4.5 | $0.00010 | $0.00277 |
Grade B, and why
yichen-agent-memory scanned grade B with 1 finding 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 5d 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.
Reads agent configuration directoriesmediumAgent snooping
.claude/, .codex/, .gemini/ hold keys, settings and other credentials a mod has no legitimate need for.
- If Claude debug reports zero matching hooks after installation, check whether a provider switcher rewrote `~/.claude/settings.json`. Persist the hooks in that manager's common configuration and any live rollback copy, The source is not reproduced here
A licence we could not identify
The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.
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.
- 5d ago First seen · 205 lines · 97 tokens per session scan B ad83ed58b7f1
yichen-agent-memory is a skill published in the GitHub repository mcncarl/yichen-skills (2,081 stars, last pushed 3d ago), with no licence file. It adds 97 tokens to every session and 2,769 once invoked, about $0.0005 per session on Opus 5. A static security scan graded it B with 1 finding (reads agent configuration directories). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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