Project rules for shell scripts, including Bash, zsh, sh, and PowerShell. They cover script style, portability, output, errors, dependencies, and safe command practices.

Use them when editing shell scripts, changing commands, handling failures, adjusting output, or keeping scripts compatible with their target shell.

They reduce the risk of scripts working on one shell or operating system but failing on another. They also help preserve existing error handling and avoid unexpected dependencies or changes.

shell — Cursor rule by inboxpraveen

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 rules/inboxpraveen/minimize-cursor-cost/shell

Clone the repo

git clone --depth 1 https://github.com/inboxpraveen/Minimize-Cursor-Cost

Made for: Cursor.

Per session 0 Nothing until a file matches its globs; then the whole rule loads.

When invoked 368 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 1 finding. 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.

Model	Per session	Once invoked
Fable 5	$0.00000	$0.00368
Opus 5	$0.00000	$0.00184
Sonnet 5	$0.00000	$0.00074
Haiku 4.5	$0.00000	$0.00037

Measured 2d ago against content hash fa85c1cf3328, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

shell scanned grade A with 1 finding 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 2d 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.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

- Don't add new dependencies on tools (`jq`, `yq`, `curl`) without flagging.

lean-cursor/.cursor/rules/shell.mdc · 38 lines

What it actually says

Shell Script Rules

Style

Match existing shebang and set -e / set -euo pipefail usage. Don't toggle.
Match existing quoting style (always quote vs minimal).
Don't reformat unrelated lines.

Output

Show the changed function or block, not the whole script.
Don't reprint header/copyright comments.

Portability

Match the existing target shell exactly (bash vs sh vs zsh vs PowerShell).
Don't introduce bashisms ([[ ... ]], arrays) into a /bin/sh script.
Don't introduce GNU-only flags into a script that targets BSD/macOS.

PowerShell

Match existing cmdlet vs alias style (Get-ChildItem vs ls).
Match existing parameter style (positional vs named).
Don't add [CmdletBinding()] to scripts that don't already use it.

Errors & Exit Codes

Match existing error-handling: || exit 1 vs trap vs explicit checks.
Don't add new trap handlers without asking.
Always exit with a meaningful code; match the existing convention.

Never

Don't add sudo to commands that didn't have it.
Don't add new dependencies on tools (jq, yq, curl) without flagging.
Don't add color/emoji output to scripts that are silent by design.
Don't replace find with fd, or grep with rg, in user-facing scripts.

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.

2d ago First seen · 38 lines · 0 tokens per session scan A fa85c1cf3328

Subscribe to this mod's changes

shell is a cursor rule published in the GitHub repository inboxpraveen/Minimize-Cursor-Cost (7 stars, last pushed 17d ago), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 368 tokens. A static security scan graded it A with 1 finding (makes network calls). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

claude-ai claude-code claude-skills cursor cursor-rules vibe-coding

sample_cursor_rule

React component best practices.

ZanzyTHEbar/cursor-rules · 88 tokens

Next.js roof. Bundled docs for THIS next version. App vs Pages from the tree.

kleosr/kleosrules · 0 tokens

shell