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 agentmods add rules/danielvm-git/bigpowers/setup-environmentgit clone --depth 1 https://github.com/danielvm-git/bigpowersWrote 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/rules/danielvm-git/bigpowers/setup-environment)<a href="https://agentmods.dev/rules/danielvm-git/bigpowers/setup-environment"><img src="https://agentmods.dev/badge/rules/danielvm-git/bigpowers/setup-environment.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 | $0.00035 | $0.00326 |
| Opus 5 | $0.00017 | $0.00163 |
| Sonnet 5 | $0.00007 | $0.00065 |
| Haiku 4.5 | $0.00003 | $0.00033 |
Grade A, and why
setup-environment 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 today.
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.
What it actually says
Setup Environment
HARD GATE — HARD GATE — Environment setup must be idempotent and reproducible. If setup fails, provide clear error messages and remediation steps. Do NOT assume prior state.
Idempotent prep so BUILD phase commands succeed on first run.
Checklist
- Read
CLAUDE.md/CONVENTIONS.mdfor required runtimes and commands. - Verify runtime versions (
node -v,swift --version, etc.). - Install dependencies (
npm ci,bundle install, etc.) — prefer lockfile installs. - Copy
.env.example→.envif documented; never commit secrets. - Run smoke: lint + one fast test or
--versionon key tools. - Record versions in
specs/state.yamlunder Environment.
BCP Plus Counter (optional)
The big-counter tool is an optional dependency for BCP Plus 13-dimension story sizing:
# Install from PyPI (recommended)
pip install big-counter
# Or from npm
npm install -g big-counter
Verify the install: big-counter --version
Skip if BCP Plus sizing is not needed for this project.
Verify
→ verify: test -f CLAUDE.md && grep -q Test CLAUDE.md
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.
- today First seen · 39 lines · 35 tokens per session scan A f2e7906426db
setup-environment is a cursor rule published in the GitHub repository danielvm-git/bigpowers (163 stars, last pushed 2d ago), licensed MIT. It adds 35 tokens to every session and 326 once invoked, about $0.0002 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.
Other cursor rules, from other repositories
ponytail
Ponytail, lazy senior dev mode. Always pick the simplest solution that works.
app-router-patterns
Next.js 14+ App Router patterns — Server Components, Client Components, Route Handlers, Server Actions, and metadata API.
context-os
ContextOS rules for context-os.
database
Database architecture, schema design, Prisma, Drizzle ORM, indexing strategies, migrations, and N+1 query resolution.
vue
Rules for Vue (2 and 3) single-file components.
nextjs
ContextOS rules for nextjs.