Where are my Langfuse API keys?

Project Settings > “API Keys” > “Create new API keys”. Name the key, keep “Full access” and click “Create API key”. The dialog shows the secret key (only shown once), the public key and the .env snippet with LANGFUSE_SECRET_KEY, LANGFUSE_PUBLIC_KEY and LANGFUSE_BASE_URL. After closing it, the key appears in the list.

You can always look up your API keys or create new ones by navigating to Project --> Settings within Langfuse.

You will also receive Langfuse API keys when you create a new project.

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