Workers Best Practices

What it does

When your agent uses it

• Tasks that involve State management
• Tasks that involve Observability

Example prompts

• “Use the workers-best-practices skill to review and authors Cloudflare Workers code against production best practices”
• “/workers-best-practices”

Requirements

• Node.js

Workflow steps

8 steps, taken from the first numbered list in SKILL.md.

1. 1Retrieve — fetch latest best practices page, workers types, and wrangler schema
2. 2Read full files — not just diffs; context matters for binding access patterns
3. 3Check types — binding access, handler signatures, no any, no unsafe casts (see references/review.md)
4. 4Check config — compatibility_date, nodejs_compat, observability, secrets, binding-code consistency
5. 5Check patterns — streaming, floating promises, global state, serialization boundaries
6. 6Check security — crypto usage, secret handling, timing-safe comparisons, error handling
7. 7Validate with tools — npx tsc --noEmit, lint for no-floating-promises
8. 8Reference rules — see references/rules.md for each rule's correct pattern

What it can do on your machine

Read from SKILL.md and the folder at commit 444ace2. 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

  Shell commands in SKILL.md call:

  • wrangler
  • npm
  • npx

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

• Network

  Hosts in commands or code, which the agent is likely to contact:

  • developers.cloudflare.com

  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

Workers Best Practices loads about 1.8k tokens when it runs, and up to ~7.9k if it reads all its reference files. Until then it costs about 96 tokens; SKILL.md has 706 words of instructions outside code blocks.

Always · name and description, kept in context so the agent knows when to use it

~96

When it runs · the whole SKILL.md, loaded when a task matches

~1.8k

With references · SKILL.md plus every file in references/, read only if the agent opens them

~7.9k

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

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 hodgef/apiker at commit 444ace2, republished under its MIT licence (© hodgef). 706 words, ~1,761 tokens.

name

workers-best-practices

description

Reviews and authors Cloudflare Workers code against production best practices. Load when writing new Workers, reviewing Worker code, configuring wrangler.jsonc, or checking for common Workers anti-patterns (streaming, floating promises, global state, secrets, bindings, observability). Biases towards retrieval from Cloudflare docs over pre-trained knowledge.

# Fetch latest workers types
mkdir -p /tmp/workers-types-latest && \
  npm pack @cloudflare/workers-types --pack-destination /tmp/workers-types-latest && \
  tar -xzf /tmp/workers-types-latest/cloudflare-workers-types-*.tgz -C /tmp/workers-types-latest
# Types at /tmp/workers-types-latest/package/index.d.ts

© hodgef, MIT. 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 2 other files (references) in .agents/skills/workers-best-practices of hodgef/apiker.

• SKILL.md
• references/review.md
• references/rules.md

Open the folder on GitHubat commit 444ace2

Used in 6 other repositories

We found 6 copies of this SKILL.md (exact, near-identical or edited) in other folders, from 6 other GitHub owners. This page covers the copy in hodgef/apiker, which our catalogue first saw on October 7, 2026.

• midudev/100cosas.dev.agents/skills/workers-best-practices
• try-works/role-model.agents/skills/workers-best-practices
• anolilab/lunora.agents/skills/workers-best-practices
• galfrevn/apollo.agents/skills/workers-best-practices
• CraftOS-dev/CraftBotskills/workers-best-practices
• aiskillstore/marketplaceskills/cloudflare/workers-best-practices