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burn0 connect

Adds or updates your burn0 API key. 
npx burn0 connect

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What it does

  1. Prompts for your API key (paste, get one free, or skip)
  2. Writes BURN0_API_KEY to your .env file
  3. Adds .env to .gitignore if missing

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When to use

  • You skipped the API key during burn0 init
  • You want to switch to a different API key
  • You’re setting up an existing project that already has burn0

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API key format

Keys start with b0_sk_ followed by 32 hex characters: 
b0_sk_a1b2c3d4e5f6a1b2c3d4e5f6a1b2c3d4
Get a free key at burn0.dev/dashboard/keys.