bvssh-check

bvssh-check is a skill for Claude Code, Codex from haabe/mycelium. It costs 28 tokens per session (2,762 once invoked), scanned A, original, MIT.

A review checklist based on Better Value Sooner Safer Happier, a way to assess whether work improves quality, outcomes, delivery speed, safety, and team experience.

In plain words
What is it for?
Use it at major delivery milestones to review quality, user or business value, lead time, risk, security, rollback readiness, and team impact.
Why use it?
It helps teams judge the results of their work with evidence instead of checking only whether tasks were completed.

Skill for Claude CodeCodex

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 mycelium plugin — 54 skills, 6 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 skills/haabe/mycelium/bvssh-check
Any agent
npx skills add haabe/mycelium --skill bvssh-check
Clone the repo
git clone --depth 1 https://github.com/haabe/mycelium

Made for: Claude Code, Codex.

Or install mycelium, the plugin that ships this one along with the rest of its 54 skills, 6 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 bvssh-check

README.md
[![agentmods](https://agentmods.dev/badge/skills/haabe/mycelium/bvssh-check.svg)](https://agentmods.dev/skills/haabe/mycelium/bvssh-check)
Your own site
<a href="https://agentmods.dev/skills/haabe/mycelium/bvssh-check"><img src="https://agentmods.dev/badge/skills/haabe/mycelium/bvssh-check.svg" alt="Measured on agentmods" height="20"></a>
Per session 28 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,762 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 $0.00028 $0.02762
Opus 5 $0.00014 $0.01381
Sonnet 5 $0.00006 $0.00552
Haiku 4.5 $0.00003 $0.00276

Measured 4d ago against content hash 9ad3c1a9063e, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

bvssh-check 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 4d 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/mycelium/skills/bvssh-check/SKILL.md · 193 lines

How it starts

The opening of the file, as written. The whole thing — 193 lines — stays where its author put it; the contents beside it link to each section on GitHub.

BVSSH Check Skill

Evaluate alignment with Better Value Sooner Safer Happier.

Workflow

For each dimension, assess current state:

Better

  • Quality improving or stable (not degrading)?
  • Technical debt under control (not growing unchecked)?
  • User satisfaction metrics stable or improving?
  • Defect rate stable or declining?
  • Evidence: [cite specific metrics or observations]

Value

  • Delivering measurable user or business outcomes?
  • Outcome metrics moving (not just output metrics)?
  • Work aligned with strategic priorities?
  • Not shipping features nobody uses?
  • Evidence: [cite specific metrics or observations]

Sooner

  • Lead time stable or decreasing?
  • Batch sizes small?
  • WIP limits respected?
  • Handoffs minimized?
  • No unnecessary waiting or queuing?
  • Evidence: [cite specific metrics or observations]

Safer

  • Security posture maintained or improved?
  • Compliance requirements met?
  • Risk being actively managed (not ignored)?
  • Rollback capability tested?
  • No new single points of failure?
  • Error budget healthy? (SRE -- check dora-metrics.yml sre section)
  • Evidence: [cite specific metrics or observations]

Happier

Smart's Happier covers four stakeholders: customers, colleagues, citizens, and climate. "Not 'more for less' at any human or climatic cost."

Colleagues:

  • Team working at sustainable pace? No chronic overtime? (XP -- Beck)
  • AI tools helping or adding cognitive load? (APEX DevX)
  • No signs of burnout?
  • Team has autonomy and purpose?
  • Learning happening continuously?

Customers:

  • Users expressing satisfaction?
  • Customer advocacy high? (Not just retained — actively recommending?)

Citizens:

  • Positive societal impact? (Open knowledge sharing, accessibility, inclusivity)
  • No harm to communities or vulnerable groups?

Climate:

  • Compute/token usage proportionate to value delivered? (Not brute-forcing with retries)
  • Waste prevented? (Projects killed before unnecessary code, discovery before delivery)
  • Sustainable resource usage patterns?

Read the full file on GitHub · 193 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. 4d ago First seen · 193 lines · 28 tokens per session scan A 9ad3c1a9063e

Subscribe to this mod's changes

bvssh-check is a skill published in the GitHub repository haabe/mycelium (45 stars, last pushed today), licensed MIT. It adds 28 tokens to every session and 2,762 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 2026-08-30.

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