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Agent skill

Cloudflare Workers

by danieljvdm in danieljvdm/effect-cf

Build, review, or operate Cloudflare Workers, Durable Objects, and Sandbox SDK applications with Wrangler.

Apache-2.0Auto-check passedBackend & APIs

Install Cloudflare Workers

skills CLI
$ npx skills add danieljvdm/effect-cf --skill cloudflare-workers -a claude-code

Project install by default; add -g for ~/.claude/skills/.

GitHub CLI
$ gh skill install danieljvdm/effect-cf cloudflare-workers --agent claude-code

Project scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).

Manual copy
$ git clone --depth 1 https://github.com/danieljvdm/effect-cf.git skills-src && mkdir -p .claude/skills && cp -r skills-src/.agents/skills/cloudflare-workers .claude/skills/cloudflare-workers && rm -rf skills-src

Use ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.

Claude Code skills documentation · loads skills from .claude/skills/

Facts

Skill name
cloudflare-workers
GitHub stars
111
Used in
1 other repo
Token cost
~324 tokens
SKILL.md length
126 words
Files
8 (incl. references)
Skills in repo
6
Repo updated
First seen
Licence
Apache-2.0

At a glance

Build, review, or operate Cloudflare Workers, Durable Objects, and Sandbox SDK applications with Wrangler.

  • Backend & APIs work in your project
  • Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md

What it does

Cloudflare Workers is an agent skill from danieljvdm/effect-cf. Build, review, or operate Cloudflare Workers, Durable Objects, and Sandbox SDK applications with Wrangler.

Its SKILL.md is about 320 tokens, which your agent loads only when the skill is triggered. The skill folder holds 8 other files, including reference files (for example `.dev-kit-origin.json`, `references/durable-objects.md` and `references/sandbox.md`).

It sits in Backend & APIs. It works with Cloudflare Workers and Cloudflare Durable Objects. The repository describes itself as: Effect-native primitives for Cloudflare Workers and bindings. The licence is Apache-2.0.

When your agent uses it

  • Backend & APIs work in your project

Example prompts

  • “/cloudflare-workers”

What it can do on your machine

Read from SKILL.md and the folder at commit 0877e66. It shows what the files ask for, not the result of running them.

  • Tool permissions

    Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.

    From allowed-tools in the SKILL.md frontmatter.

  • Runs code

    No scripts in the folder and no shell commands in SKILL.md.

    From the folder's file list and the shell code blocks in SKILL.md.

  • Network

    No URLs in SKILL.md.

    From URLs in SKILL.md, links to its own repository left out.

  • Credentials

    Names no API keys, tokens, secrets or passwords.

    From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.

Context cost

Cloudflare Workers loads about 324 tokens when it runs, and up to ~3.5k if it reads all its reference files. Until then it costs about 31 tokens; SKILL.md has 126 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it
~31
When it runs · the whole SKILL.md, loaded when a task matches
~324
With references · SKILL.md plus every file in references/, read only if the agent opens them
~3.5k

Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.

Safety

Auto-check passed

The automated check found no risky patterns in SKILL.md.

Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.

SKILL.md

The full file from danieljvdm/effect-cf at commit 0877e66, republished under its Apache-2.0 licence (© danieljvdm). 126 words, ~324 tokens.

Download SKILL.mdSave it as .claude/skills/cloudflare-workers/SKILL.md (or your agent's skills folder). This skill also uses 7 other files; get the full folder from GitHub.
name
cloudflare-workers
description
Build, review, or operate Cloudflare Workers, Durable Objects, and Sandbox SDK applications with Wrangler.
license
Apache-2.0

Cloudflare Workers

Use the repository's architecture, commands, installed types, and runtime compatibility settings. Current documentation explains APIs; a maintenance task does not by itself call for a dependency or compatibility-date upgrade.

Read for the changed boundary:

  • Worker handlers, streams, bindings, and verification: Workers.
  • Durable Object identity, storage, alarms, and WebSockets: Durable Objects.
  • Wrangler commands, environments, deployment, and secrets: Wrangler.
  • An application using @cloudflare/sandbox: Sandbox SDK. Ordinary commands inside an agent sandbox do not require the SDK.

Resolve the account, environment, and local or remote target before mutations. Preserve deployed storage migrations, existing authorization, and host ownership of task containers, previews, authentication, and capability URLs. Follow the repository's testing policy and verify the behavior at its actual runtime boundary.

Attribution is in NOTICE; terms are in LICENSE.

© danieljvdm, Apache-2.0. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file

Files

SKILL.md and 7 other files (references) in .agents/skills/cloudflare-workers of danieljvdm/effect-cf.

  • SKILL.md
  • .dev-kit-origin.json
  • LICENSE
  • NOTICE
  • references/durable-objects.md
  • references/sandbox.md
  • references/workers.md
  • references/wrangler.md

Open the folder on GitHubat commit 0877e66

Used in 1 other repository

We found 1 copy of this SKILL.md (exact, near-identical or edited) in other folders, from 1 other GitHub owner. This page covers the copy in danieljvdm/effect-cf, which our catalogue first saw on October 7, 2026.

Compare with similar skills

Cloudflare Workers next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.

Cloudflare Workers compared with similar skills
SkillStarsUsed inTokensAuto-checkLicenceRepo updated
Cloudflare Workers this skilldanieljvdm/effect-cf1111 repos~324Automated safety check: PassApache-2.0
Durable Objectscloudflare/skills3k2 repos~1.5kAutomated safety check: PassApache-2.0
Durable Objectshodgef/apiker1274 repos~1.5kAutomated safety check: PassMIT
Sharehtml Collaborationjonesphillip/sharehtml132—~902Automated safety check: PassApache-2.0
Lunoraanolilab/lunora283—~2.7kAutomated safety check: PassCustom licence
Apikerhodgef/apiker127—~1.4kAutomated safety check: PassMIT

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    111 GitHub stars~248 tokensUpdated 3 days ago
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Works with

Categories

Questions about Cloudflare Workers

What does Cloudflare Workers do?

Build, review, or operate Cloudflare Workers, Durable Objects, and Sandbox SDK applications with Wrangler. Cloudflare Workers is an agent skill from danieljvdm/effect-cf. Build, review, or operate Cloudflare Workers, Durable Objects, and Sandbox SDK applications with Wrangler.

When should I use Cloudflare Workers?

Cloudflare Workers fits situations like: backend & APIs work in your project.

How do I install Cloudflare Workers in Claude Code?

Run `npx skills add danieljvdm/effect-cf --skill cloudflare-workers -a claude-code`. Or copy the skill folder (.agents/skills/cloudflare-workers in danieljvdm/effect-cf) into .claude/skills/cloudflare-workers in your project. Claude Code loads it when a task matches its description.

How do I install Cloudflare Workers in Codex?

Run `npx skills add danieljvdm/effect-cf --skill cloudflare-workers -a codex`. Or copy the skill folder (.agents/skills/cloudflare-workers in danieljvdm/effect-cf) into .agents/skills/cloudflare-workers in your project. Codex loads it when a task matches its description.

Can I use Cloudflare Workers in Cursor, Gemini CLI or GitHub Copilot?

Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add danieljvdm/effect-cf --skill cloudflare-workers -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/cloudflare-workers, .gemini/skills/cloudflare-workers, .github/skills/cloudflare-workers and .opencode/skills/cloudflare-workers in your project.

What does Cloudflare Workers need to run?

SKILL.md names no scripts, command-line tools or credentials: Cloudflare Workers is instructions for the agent only.

Does Cloudflare Workers access the network?

SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.

Is Cloudflare Workers safe to install?

Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.

What licence does Cloudflare Workers use?

Cloudflare Workers is published under the Apache-2.0 licence (declared in SKILL.md). It allows redistribution, so the full SKILL.md is shown on this page.

How many tokens does Cloudflare Workers use?

About 324 tokens (SKILL.md is roughly 1.3k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 3.2k tokens, read only when the agent opens those files.

What are the alternatives to Cloudflare Workers?

Skills that share tags, products or a category with Cloudflare Workers: Durable Objects (cloudflare/skills, 3k stars), Durable Objects (hodgef/apiker, 127 stars), Sharehtml Collaboration (jonesphillip/sharehtml, 132 stars) and Lunora (anolilab/lunora, 283 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.

Who maintains Cloudflare Workers?

danieljvdm (a GitHub user) maintains it in danieljvdm/effect-cf, which has 111 GitHub stars. The repository holds 6 skills in this directory. The repository was last updated on October 4, 2026.

Source: danieljvdm/effect-cf on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.