codemap: Skill for Claude Code

.agents/skills/upgrade-packages/SKILL.md

upgrade-packages is a skill for Claude Code, Codex from stainless-code/codemap. It costs 39 tokens per session (1,859 once invoked), scanned A, original, MIT.

A dependency-upgrade workflow that collects package changes, security advisories, and usage locations into a JSON evidence file for review. Dependencies are external packages your project relies on.

In plain words
What is it for?
Use it to upgrade packages, review changes between released package files, or audit dependencies for known security advisories.
Why use it?
It gives you one record to inspect before changing exact package versions, reducing unsupported upgrade decisions and accidental broad updates.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

This is stainless-code/codemap's own configuration. It tells Claude Code and Codex how to work on codemap itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything codemap configures →

Reuse

Borrowing it

Nothing to install: this file belongs to stainless-code/codemap. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/stainless-code/codemap/main/.agents/skills/upgrade-packages/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/stainless-code/codemap

Made for: Claude Code, Codex.

Wrote 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.

agentmods badge for upgrade-packages

README.md
[![agentmods](https://agentmods.dev/badge/skills/stainless-code/codemap/upgrade-packages/github.svg)](https://agentmods.dev/skills/stainless-code/codemap/upgrade-packages)
Your own site
<a href="https://agentmods.dev/skills/stainless-code/codemap/upgrade-packages"><img src="https://agentmods.dev/badge/skills/stainless-code/codemap/upgrade-packages/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.

agentmods 80×15 button for upgrade-packages

Your own site · 80×15
<a href="https://agentmods.dev/skills/stainless-code/codemap/upgrade-packages"><img src="https://agentmods.dev/badge/skills/stainless-code/codemap/upgrade-packages.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 39 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,859 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00039 $0.01859
Opus 5.5 $0.00016 $0.00744
Sonnet 5.5 $0.00008 $0.00372
Haiku 4.5 $0.00004 $0.00186

Measured 1mo ago against content hash 18dd2fd6146a, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

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 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.

.agents/skills/upgrade-packages/SKILL.md · 80 lines

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 (check deltas[<pkg>][].peerEngine + the other package's bumpClass), move the coupled set up a band.
  • priority-bump if audit.ghsa verdict is priority-bump — goes first within its band.
  • check-failed if audit.ghsa verdict is check-failed (gh/parse/cache failure, id:"error") — inconclusive, not a vuln; re-run evidence before treating as blocked.
  • blocked if any deltas[<pkg>][].error leaves the span uncovered (retry evidence; changelogUrl is the npm version page) OR a breaking/security/peerEngine delta 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.

Read the full file on GitHub · 80 lines

Files

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.

Changes

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.

  1. 1mo ago First seen · 80 lines · 39 tokens per session scan A 18dd2fd6146a

Subscribe to this mod's changes

upgrade-packages is a skill published in the GitHub repository stainless-code/codemap (8 stars, last pushed yesterday), licensed MIT. It adds 39 tokens to every session and 1,859 once invoked, about $0.0002 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 2026-08-31.

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