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/stainless-code/codemap/upgrade-packagesnpx skills add stainless-code/codemap --skill upgrade-packagesgit clone --depth 1 https://github.com/stainless-code/codemapWhat 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 | $0.00039 | $0.01859 |
| Opus 5 | $0.00019 | $0.00929 |
| Sonnet 5 | $0.00008 | $0.00372 |
| Haiku 4.5 | $0.00004 | $0.00186 |
Grade A, and why
upgrade-packages 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 2d 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.
How it starts
The opening of the file, as written. The whole thing — 80 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Upgrade packages
A script gathers every tarball delta (bun pm diff), GHSA advisory, and codebase-usage site into one JSON artifact; you read it and judge. Never touch the registry, GitHub, or GHSA directly — every citation comes from the artifact (tarball.notes, kept tarball.files[].patch, changelogUrl, advisory url), so no model priors sneak in. Sources of truth: the artifact, then the codebase. Cite where you read every claim.
This repo uses bun with exact pins in package.json — bun update alone bumps nothing. Lift an exact pin with bun update <pkg>@<target> (or bun update <pkg> --latest per package) / a package.json edit. Never bun update --latest across the board. The check-updates script is inventory-only.
Phase 1 — Gather evidence
Run bun run upgrade-packages:evidence (defaults to --out scripts/upgrade-packages/artifact.json; pass --out <path> to override). Requires network access — the script calls bun pm diff (registry tarballs) and gh api (GHSA advisories only). A sandbox that blocks api.github.com fails GHSA (check-failed); deltas still land. Cache: scripts/upgrade-packages/.cache/ (GHSA 1h, tarball diffs 7d). Read the artifact. Schema + how-to-read: REFERENCE.md.
Done when: the artifact exists and you've read inventory, outdated, audit, deltas, and usage.
Phase 2 — Triage (judge the artifact)
For each outdated package, produce a cited verdict + band:
- band =
bumpClass(patch/minor/major/prerelease). Coupled deps: if a patch bump's peer/dep requires a minor+ bump of another direct dep (checkdeltas[<pkg>][].peerEngine+ the other package'sbumpClass), move the coupled set up a band. - priority-bump if
audit.ghsaverdict ispriority-bump— goes first within its band. - check-failed if
audit.ghsaverdict ischeck-failed(gh/parse/cache failure,id:"error") — inconclusive, not a vuln; re-run evidence before treating as blocked. - blocked if any
deltas[<pkg>][].errorleaves the span uncovered (retry evidence;changelogUrlis the npm version page) OR abreaking/security/peerEnginedelta is a break-risk you can't resolve (see Phase 3). - deferred-major for a major with an unresolved break — unless it clears a high/critical advisory, in which case surface the tradeoff to the user.
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.
- 2d ago First seen · 80 lines · 39 tokens per session scan A 18dd2fd6146a
upgrade-packages is a skill published in the GitHub repository stainless-code/codemap (8 stars, last pushed 7d ago), licensed MIT. It adds 39 tokens to every session and 1,859 once invoked, about $0.0002 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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