with-command-file

A set of rules for safely reading or changing command files in a Deno-based application. A command file is a source file mapped to a command users can run.

In plain words
What is it for?
Use it before working in src/commands to inspect the CLI entry points, command routing, configuration, available tasks, README, and command template.
Why use it?
It reduces the risk of adding commands that do not match the application's loading, routing, configuration, or task structure.

Cursor rule for Cursor

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/zackiles/deno-kit/with-command-file
Clone the repo
git clone --depth 1 https://github.com/zackiles/deno-kit

Made for: Cursor.

Per session 0 Nothing until a file matches its globs; then the whole rule loads.
When invoked 572 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 $0.00000 $0.00572
Opus 5 $0.00000 $0.00286
Sonnet 5 $0.00000 $0.00114
Haiku 4.5 $0.00000 $0.00057

Measured yesterday against content hash 32dbdf3eceae, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

with-command-file 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 yesterday.

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.

.cursor/rules/local/with-command-file.mdc · 33 lines

How it starts

The opening of the file, as written. The whole thing — 33 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Instructions For Reading and Modifying Command Files In src/commands

Before you read or modify any files in src/commands ensure you read and understand how command files work by doing the following:

  • Review how commands are loaded and executed in cli.ts
  • Review how commands are routed and arguments handled
    • Command file names map to CLI commands. Examples: src/commands/version.ts maps to deno run -A src/main.ts version or deno task dev version if you're in development mode
    • Commands can configure and use optional arguments. Examples: src/commands/version.ts maps to deno run -A src/main.ts some-command --verbose or deno task dev some-command --verbose if you're in development mode
  • Review how commands can import and utilize any of the app config in config.ts
  • Review the entrypoint of the application in main.ts which calls cli.ts which further invokves one of the commands in src/commands
  • Review the general commands available (shown as Deno Tasks) in deno.json
  • If you haven't already, review the project readme in README.md to understand the overall application architecture
  • CREATING NEW COMMANDS: Review the example template command in the file example.disabled.ts

Involved Files

  • main.ts : Entry point for the CLI. Initializes global app config and state before executing cli.ts
  • cli.ts : Loads commands with command-router.ts and executes them
  • command-router.ts : Configures commands
  • example.disabled.ts : Example template command for reference
  • logger.ts : Logging for application and system messages (NOT FOR CLI MESSAGES TO USER)
  • config.ts : Global application configuration. Contains values such as: application name and version, current working directory, environemnt variables etc...

Read the full file on GitHub · 33 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. yesterday First seen · 33 lines · 0 tokens per session scan A 32dbdf3eceae

Subscribe to this mod's changes

with-command-file is a cursor rule published in the GitHub repository zackiles/deno-kit (3 stars, last pushed 5mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 572 tokens. 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.