update

update is a command for coding agents from SienkLogic/plan-build-run. It costs 10 tokens per session (222 once invoked), scanned A, original, MIT.

An update command that checks the installed Plan-Build-Run version against the latest version available through npm, a JavaScript package registry.

In plain words
What is it for?
It is for checking, reviewing, and installing a newer Plan-Build-Run release.
Why use it?
It shows whether a newer release exists and lets you review its changes before updating.

Command

Installs and runs on its own, but its text points at files inside its plugin — anything it tells you to read at a ${CLAUDE_PLUGIN_ROOT} path is only there once the plugin is installed. Installing the plugin gets both.

Part of the pbr plugin — 45 skills, 71 commands, 18 agents, 3 hooks shipped together

Install

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.

agentmods
npx agentmods add commands/sienklogic/plan-build-run/update
Clone the repo
git clone --depth 1 https://github.com/SienkLogic/plan-build-run

Or install pbr, the plugin that ships this one along with the rest of its 45 skills, 71 commands, 18 agents, 3 hooks.

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/commands/sienklogic/plan-build-run/update.svg)](https://agentmods.dev/commands/sienklogic/plan-build-run/update)
Your own site
<a href="https://agentmods.dev/commands/sienklogic/plan-build-run/update"><img src="https://agentmods.dev/badge/commands/sienklogic/plan-build-run/update.svg" alt="Measured on agentmods" height="20"></a>
Per session 10 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 222 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00010 $0.00222
Opus 5 $0.00005 $0.00111
Sonnet 5 $0.00002 $0.00044
Haiku 4.5 $0.00001 $0.00022

Measured yesterday against content hash 1f15b9e2cf32, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, 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 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.

plugins/pbr/commands/update.md · 38 lines

What it actually says

pbr-tools help 2>/dev/null | head -1
cat ${CLAUDE_PLUGIN_ROOT}/package.json 2>/dev/null | node -e "const d=require('fs').readFileSync('/dev/stdin','utf8');console.log(JSON.parse(d).version)" 2>/dev/null

2. Check Latest Version

npm view plan-build-run version 2>/dev/null

3. Compare and Offer Update

If newer version available, display changelog and ask for confirmation.

npm install -g plan-build-run@latest

4. Post-Update

Display: "Updated to v{version}. Restart Claude Code to use the new version."

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. yesterday First seen · 38 lines · 10 tokens per session scan A 1f15b9e2cf32

Subscribe to this mod's changes

update is a command published in the GitHub repository SienkLogic/plan-build-run (17 stars, last pushed 5mo ago), licensed MIT. It adds 10 tokens to every session and 222 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 2026-09-03.