update

update is a skill for Claude Code from stellarshenson/claude-code-plugins. It costs 90 tokens per session (1,176 once invoked), scanned A, original, MIT.

A document-update workflow for adding sources, applying corrections, reapplying formatting rules, and checking changed content against its sources. It requires a grounding command-line check before an update is considered complete.

In plain words
What is it for?
Use it to update processed documents when information changes, new sources arrive, or existing content needs correction and re-verification.
Why use it?
It reduces the risk that revised documents contain claims that are unsupported by the available source material.

Skill for Claude Code

Written for Claude Code: ${CLAUDE_PLUGIN_ROOT} variable. Also seen: mentions .claude-plugin.

Runs only inside its plugin — its command needs a path that Claude Code sets for a plugin’s own hooks and for nothing else. Install the plugin, not this.

Part of the document-processing plugin — 5 skills, 5 commands shipped together

Good fit Use it to update processed documents when information changes, new sources arrive, or existing content needs correction and re-verification.

Compare 6 skills from other repositories ↓
Install

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.

Claude Code
/plugin marketplace add stellarshenson/claude-code-plugins
Claude Code
/plugin install document-processing

Made for: Claude Code.

Or install document-processing, the plugin that ships this one along with the rest of its 5 skills, 5 commands.

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 update

README.md
[![agentmods](https://agentmods.dev/badge/skills/stellarshenson/claude-code-plugins/update/github.svg)](https://agentmods.dev/skills/stellarshenson/claude-code-plugins/update)
Your own site
<a href="https://agentmods.dev/skills/stellarshenson/claude-code-plugins/update"><img src="https://agentmods.dev/badge/skills/stellarshenson/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.

agentmods 80×15 button for update

Your own site · 80×15
<a href="https://agentmods.dev/skills/stellarshenson/claude-code-plugins/update"><img src="https://agentmods.dev/badge/skills/stellarshenson/claude-code-plugins/update.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 90 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,176 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 $0.00090 $0.01176
Opus 5.5 $0.00036 $0.00470
Sonnet 5.5 $0.00018 $0.00235
Haiku 4.5 $0.00009 $0.00118

Measured 1mo ago against content hash 0ccb2013a40a, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

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.

plugins/document-processing/skills/update/SKILL.md · 69 lines

How it starts

The opening of the file, as written. The whole thing — 69 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Update Skill

Update existing processed document with new info, corrections, or re-verification against updated sources. Every update ends with mandatory CLI-grounding pass on changed content - no silent skip - any content change can introduce ungrounded claim.

Pre-flight install (MANDATORY - run every session, no asking)

python3 -m pip install --user --upgrade stellars-claude-code-plugins 2>&1 | tail -1
LIB=$(python3 -c "import importlib.metadata as m;print(m.version('stellars-claude-code-plugins'))" 2>/dev/null) || { echo "FATAL: toolkit unavailable"; exit 1; }
PLUG=$(grep -m1 '"version"' "${CLAUDE_PLUGIN_ROOT}/.claude-plugin/plugin.json" 2>/dev/null | cut -d'"' -f4)
OLDER=$(printf '%s\n%s\n' "$LIB" "$PLUG" | sort -V | head -1)
[ -n "$PLUG" ] && [ "$LIB" != "$PLUG" ] && [ "$OLDER" = "$LIB" ] && { echo "STALE: library $LIB older than plugin $PLUG - refusing to run on an outdated CLI; re-run the upgrade"; exit 1; }
echo "toolkit $LIB"

Run the CLI without touching the caller's project. The gate above puts it on PATH, so the bare command name is the whole invocation. uv run instead resolves whatever project the working directory sits in and writes uv.lock and .venv into it, so if you reach for uv pass --no-project (uv run --no-project <cli> ...) - it skips project discovery, leaves the tree untouched and still finds the same PATH binary. --no-sync and --frozen are not substitutes; both still create .venv.

The upgrade always runs; a version mismatch blocks. Never ask - just run the line.

When to use

  • New source document added to 1-input/ - re-run affected sections
  • User found errors in 3-output/ document - correct and re-verify
  • Grounding audit failed - fix unconfirmed claims
  • Uniformization rules changed - re-apply to existing output
  • Additional context available - enrich existing document

Steps

  1. Identify what exists: Read 3-output/ for the current document, 2-wip/ for the processing history, INSTRUCTIONS.md and BENCHMARK.md for the original program.

Read the full file on GitHub · 69 lines

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 · 69 lines · 90 tokens per session scan A 0ccb2013a40a

Subscribe to this mod's changes

update is a skill published in the GitHub repository stellarshenson/claude-code-plugins (4 stars, last pushed today), licensed MIT. It adds 90 tokens to every session and 1,176 once invoked, about $0.0004 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 2026-09-05.

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