brancher-preview

brancher-preview is a skill for Claude Code from ProxiBlue/pb-hypernode-mcp. It costs 58 tokens per session (2,616 once invoked), scanned A, original, Apache-2.0.

A complete workflow for reviewing a change on a temporary Hypernode Brancher copy of a Magento site. It creates the sanitized copy, applies changes, builds the site, and opens the result for inspection.

In plain words
What is it for?
Use it to test a change from creation through visual review, then clean up the temporary environment afterward.
Why use it?
It brings the preview steps together so a client can assess a change in a production-like environment before release.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: mentions Claude Code.

Part of the pb-hypernode-mcp plugin — 4 skills, 1 MCP server shipped together

Good fit Use it to test a change from creation through visual review, then…

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/proxiblue/pb-hypernode-mcp/brancher-preview
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.

Any agent
npx skills add ProxiBlue/pb-hypernode-mcp --skill brancher-preview
Clone the repo
git clone --depth 1 https://github.com/ProxiBlue/pb-hypernode-mcp

Made for: Claude Code.

Or install pb-hypernode-mcp, the plugin that ships this one along with the rest of its 4 skills, 1 MCP server.

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 brancher-preview

README.md
[![agentmods](https://agentmods.dev/badge/skills/proxiblue/pb-hypernode-mcp/brancher-preview.svg)](https://agentmods.dev/skills/proxiblue/pb-hypernode-mcp/brancher-preview)
Your own site
<a href="https://agentmods.dev/skills/proxiblue/pb-hypernode-mcp/brancher-preview"><img src="https://agentmods.dev/badge/skills/proxiblue/pb-hypernode-mcp/brancher-preview.svg" alt="Measured on agentmods" height="20"></a>
Per session 58 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,616 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 $0.00058 $0.02616
Opus 5 $0.00029 $0.01308
Sonnet 5 $0.00012 $0.00523
Haiku 4.5 $0.00006 $0.00262

Measured 5d ago against content hash 027c98f99b6b, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-06, from the pricing page.

Security

Grade A, and why

brancher-preview 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 5d 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.

skills/brancher-preview/SKILL.md · 191 lines

How it starts

The opening of the file, as written. The whole thing — 191 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Brancher Preview

The full spin-up -> change -> build -> view loop: create a sanitized node, apply a code change to it (two supported patterns), run the Magento build commands the change actually needs, look at the result with a browser, and end with an explicit reminder that the node is still billing Brancher minutes. This skill does not delete the node itself — that is brancher-cleanup's job, or an explicit follow-up brancher_delete call.

Flow

  1. Identify which Hypernode/app, then spin up the node. Follow the brancher-spinup skill exactly, starting with its own first step: if the user's request doesn't say which app to target, call brancher_apps first, show the configured list, and ask before calling any other tool (never guess an appname; if exactly one app is configured, proceed with it and just note that). Then continue the brancher-spinup flow (ask for a label if missing, call brancher_create, report node_name, access_url with its Basic Auth login (preview_basic_auth_username/ preview_basic_auth_password, if set — without it the URL alone won't get anyone in), admin_url with its WORKING login (preview_admin_username/preview_admin_password — NOT admin_username/admin_email, which is the deliberately-locked original account), status, sanitization_commands_run, and an explicit sales_and_customer_data_sanitized confirmation — minutes_remaining is always None; see the brancher-spinup skill for why, and don't report it as if it were meaningful data). The wait itself is two separately-timed phases (ip-assignment, then SSH-reachability); on success report the ip_assigned_after_seconds/ssh_reachable_after_seconds split too when it's notably uneven, and see brancher-spinup's Errors section for how to tell the two distinct timeout failure modes apart (NodeIpNeverAssignedError vs NodeUnreachableTimeoutError) if spin-up fails here. Do not reimplement or shortcut that create -> wait -> sanitize -> ready sequence here — reuse it as a step. Nothing in this skill proceeds until brancher_create reports status: "ready".

Read the full file on GitHub · 191 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. 5d ago First seen · 191 lines · 58 tokens per session scan A 027c98f99b6b

Subscribe to this mod's changes

brancher-preview is a skill published in the GitHub repository ProxiBlue/pb-hypernode-mcp (0 stars, last pushed 9d ago), licensed Apache-2.0. It adds 58 tokens to every session and 2,616 once invoked, about $0.0003 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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