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 skills add ProxiBlue/pb-hypernode-mcp --skill brancher-previewgit clone --depth 1 https://github.com/ProxiBlue/pb-hypernode-mcpWrote 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.
[](https://agentmods.dev/skills/proxiblue/pb-hypernode-mcp/brancher-preview)<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>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.
| Model | Per session | Once 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 |
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.
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
- Identify which Hypernode/app, then spin up the node. Follow the
brancher-spinupskill exactly, starting with its own first step: if the user's request doesn't say which app to target, callbrancher_appsfirst, show the configured list, and ask before calling any other tool (never guess anappname; if exactly one app is configured, proceed with it and just note that). Then continue thebrancher-spinupflow (ask for a label if missing, callbrancher_create, reportnode_name,access_urlwith 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_urlwith its WORKING login (preview_admin_username/preview_admin_password— NOTadmin_username/admin_email, which is the deliberately-locked original account),status,sanitization_commands_run, and an explicitsales_and_customer_data_sanitizedconfirmation —minutes_remainingis alwaysNone; see thebrancher-spinupskill 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 theip_assigned_after_seconds/ssh_reachable_after_secondssplit too when it's notably uneven, and seebrancher-spinup's Errors section for how to tell the two distinct timeout failure modes apart (NodeIpNeverAssignedErrorvsNodeUnreachableTimeoutError) 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 untilbrancher_createreportsstatus: "ready".
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.
- 5d ago First seen · 191 lines · 58 tokens per session scan A 027c98f99b6b
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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