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 bengous/claude-code-plugins/plugin install plugin-cache-syncWrote 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/commands/bengous/claude-code-plugins/update)<a href="https://agentmods.dev/commands/bengous/claude-code-plugins/update"><img src="https://agentmods.dev/badge/commands/bengous/claude-code-plugins/update/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/commands/bengous/claude-code-plugins/update"><img src="https://agentmods.dev/badge/commands/bengous/claude-code-plugins/update.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 | $0.00006 | $0.00397 |
| Opus 5.5 | $0.00002 | $0.00159 |
| Sonnet 5.5 | $0.00001 | $0.00079 |
| Haiku 4.5 | $0.00001 | $0.00040 |
Grade A, and why
update 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 1mo 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
Update plugin-cache-sync
Verify and fix the plugin-cache-sync CLI installation.
Execution
-
Inspect the installed entry.
readlinkprints the target of a symlink and nothing for anything else:readlink ~/.local/bin/plugin-cache-sync- It prints
${CLAUDE_PLUGIN_ROOT}/scripts/plugin-cache-sync: reportOK: symlink is validand go to step 3, except on Windows (Git Bash, MSYS2, Cygwin), which goes to step 2. - It prints another target: go to step 2.
- It prints nothing: run
ls -l ~/.local/bin/plugin-cache-sync. No such file: stop and tell the user to run/plugin-cache-sync:installfirst. A regular file: on Linux and macOS, warn that it is not a symlink and gets replaced by one. Then go to step 2.
- It prints
-
Install the current script. On Linux and macOS:
ln -sf "${CLAUDE_PLUGIN_ROOT}/scripts/plugin-cache-sync" ~/.local/bin/plugin-cache-syncOn Windows, copy the latest script over the old one:
cp -f "${CLAUDE_PLUGIN_ROOT}/scripts/plugin-cache-sync" ~/.local/bin/plugin-cache-sync && chmod +x ~/.local/bin/plugin-cache-sync -
Confirm:
plugin-cache-sync version
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.
- 1mo ago Changed · -3 lines f6c8e9009ed2
- 1mo ago First seen · 49 lines · 6 tokens per session scan A 521d6c2b93fc
update is a command published in the GitHub repository bengous/claude-code-plugins (5 stars, last pushed today), licensed MIT. It adds 6 tokens to every session and 397 once invoked, about $0.0000 per session on Opus 5.5. 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 2026-09-03.
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