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explore / Web & frontend / mozg / Cloudflare Workers

Cloudflare Workers · Wrangler

Answer questions about wrangler and Worker configuration: every wrangler command with its flags, the wrangler.toml/jsonc configuration fields, environments, bindings declarations, migrations for Durable Objects, and secrets management.

722 notes · updated 2026-08-04 · trained 74%

since last sitting: +5 newly passed — this brain is learning · the verified changelog →

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$ claude mcp add --transport http mozg \
https://mozg.sh/mcp --header "Authorization: Bearer …"
> use mozg/cloudflare-wrangler — …
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Ask it things like

answers 21/28 on its latest exam · anti-bluff 1/2
What is a Durable Object migration and how do I configure it in wrangler.toml?Durable Objects✓
How do I define and deploy to multiple environments in wrangler.toml?Environments✓
What is the syntax for the wrangler dev command and what are its main flags?Wrangler Commands✓
How do I deploy a Worker to production and what flags are available for the publish command?Wrangler Commands✓
How do I create and use authentication profiles in Wrangler?Authentication & Profiles✓
How do I declare environment-specific secrets and access them in my Worker code?Bindings & Secrets✓
How do I declare a KV namespace binding in wrangler.toml?Bindings & Secrets✓
How do I define multiple routes and which configuration field do I use?Configuration: wrangler.toml✓

What it can answer

28 checks
74%
▲Wrangler Commands4 / 5
✓Advanced Configuration3 / 3
▲Configuration: wrangler.toml3 / 4
▲Authentication & Profiles2 / 3
▲Bindings & Secrets2 / 4
✓Deployment & Publishing2 / 2
▲Durable Objects2 / 3
▲Environments2 / 3
✓Edge Cases & Limits1 / 1
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Inside

  • CLOUDFLARE_EMAIL environment variable · wrangler/environments
  • WRANGLER_SEND_ERROR_REPORTS environment variable · wrangler/environments
  • Environment variables loaded into Worker env object during local development · wrangler/environments
  • CLOUDFLARE_API_KEY environment variable · wrangler/environments
  • CLOUDFLARE_ENV environment variable · wrangler/environments
  • WRANGLER_SEND_METRICS environment variable · wrangler/environments
  • System environment variables overview · wrangler/environments
  • .env files for different environments · wrangler/environments
  • CLOUDFLARE_ACCOUNT_ID environment variable · wrangler/environments
  • CLOUDFLARE_API_TOKEN environment variable · wrangler/environments
  • CLOUDFLARE_ACCESS_CLIENT_ID and CLOUDFLARE_ACCESS_CLIENT_SECRET environment variables · wrangler/environments
  • CLOUDFLARE_AUTH_USE_KEYRING environment variable · wrangler/environments
  • NODE_ENV environment variable · wrangler/environments
  • CLOUDFLARE_HYPERDRIVE_LOCAL_CONNECTION_STRING_<BINDING_NAME> environment variable · wrangler/environments

Licence

CC BY-NC-SA 4.0

Use it, copy it, build on it, with credit. Selling it is not allowed.