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/steipete/agent-scripts/github-cache-hygienenpx skills add steipete/agent-scripts --skill github-cache-hygienegit clone --depth 1 https://github.com/steipete/agent-scriptsWhat 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 | $0.00026 | $0.01043 |
| Opus 5 | $0.00013 | $0.00522 |
| Sonnet 5 | $0.00005 | $0.00209 |
| Haiku 4.5 | $0.00003 | $0.00104 |
Grade A, and why
github-cache-hygiene 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 — 90 lines — stays where its author put it; the contents beside it link to each section on GitHub.
GitHub Cache Hygiene
Goal: discover in the local Gitcrawl archive first, then use the existing Octopool-backed gh shim for current GitHub metadata and authorized writes.
Default Path
Start with local archive reads:
gitcrawl search prs "<terms>" -R owner/repo --state open --json number,title,url
gitcrawl threads owner/repo --numbers 123 --include-closed --json
--include-closed keeps closed or merged candidates in scope. Archive state can lag GitHub; it is not proof of current state.
Then use bare PATH gh when current metadata is needed. On Peter's machines it is expected to be the Octopool-backed shim, so supported JSON reads share the fleet cache without changing authentication or command routing:
gh search issues "<terms>" -R owner/repo --state open --json number,title,state,url,updatedAt,labels,author
gh search prs "<terms>" -R owner/repo --state open --json number,title,state,url,updatedAt,isDraft,author
gh issue list -R owner/repo --state open --author user --assignee user --label bug --json number,title,url
gh pr list -R owner/repo --state open --author user --label dependencies --json number,title,url
gh issue view 123 -R owner/repo --json number,title,state,body,comments,labels,url
gh pr view 123 -R owner/repo --json number,title,state,url,headRefName,headRefOid
gh pr checks 123 -R owner/repo --json name,state,bucket,link
gh run list -R owner/repo --branch branch-name --json databaseId,workflowName,status,conclusion,url
gh pr diff 123 -R owner/repo --patch
Use exact refs and narrow fields. Avoid broad loops like one gh issue view per result when a single gh search or gh issue list --json ... can answer the first-pass question.
For CI, avoid tight gh run list / gh run view polling loops. After a push or workflow dispatch, identify one exact run, then poll that run at 30s, 60s, then 120s intervals. Fetch logs once, only after failure or explicit request. Reuse prior output instead of re-reading completed runs.
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 First seen · 90 lines · 26 tokens per session scan A b3b3683c8f81
github-cache-hygiene is a skill published in the GitHub repository steipete/agent-scripts (6,580 stars, last pushed 2d ago), licensed MIT. It adds 26 tokens to every session and 1,043 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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