Home / openhands / extensions · skills/deno/SKILL.md · GitHub

deno skillA

deno is agent-read markdown (skill) from openhands/extensions: If the project uses deno, use this skill. Use this skill to initialize and work with Deno projects, add/remove dependencies (JSR and npm), run tasks and scripts with appropriate permissions, and use built-in tooling (fmt/lint/test)..

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

What the file says

# Deno

Use Deno as the default runtime/tooling when the repo contains `deno.json`/`deno.jsonc`, uses `deno.lock`, or scripts/documentation reference `deno task`, `deno run`, `deno test`, etc.

## Quick decision rules

- Prefer `deno task <name>` if the repo defines tasks.
- Use `deno add` / `deno remove` to manage dependencies (writes to config).
- Be explicit about permissions for `deno run` / `deno test`.

## Common operations

### Initialize a new project

```bash
deno init
```

### Add dependencies (JSR and npm)

```bash
# JSR (recommended for Deno-first packages)
deno add jsr:@std/path

# npm packages are supported too
deno add npm:react

# multiple at once
deno add jsr:@std/assert npm:chalk
```

### Remove dependencies

```bash
deno remove jsr:@std/path
```

### Run a script

```bash
# Minimal permissions: only what the program needs
# Examples:
#   --allow-net=api.example.com
#   --allow-read=./data
#   --allow-env=FOO,BAR

deno run --allow-net --allow-read main.ts
```

### Run tasks

```bash
# list tasks
deno task

# run a task defined in deno.json/deno.jsonc
deno task dev
```

### Formatting, linting, testing

```bash
deno fmt
deno lint
deno test
…

Read the whole file at its exact version.

How to install

Latest version
mdr add openhands/extensions/deno@git:20260214.cb4039b
Exact content
mdr add openhands/extensions/deno@sha256:6704eb29264daea9

Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.

Badge

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Versions

versioncommittedcommitsizeaudit
git:20260214.cb4039b latest2026-02-14 cb4039b 2,266 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (2266 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

openhands/extensions · 150 stars · license MIT · pushed 2026-09-24 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_5vyrm6s4ezuxbrvm
GET https://markdownregistry.com/api/v1/resolve?ref=openhands/extensions/deno
GET https://markdownregistry.com/api/v1/blob/6704eb29264daea9cf63af19c216a9d1c0970a094830efedd02e0545feaa65c1

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