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July 28, 2026

Secure remote experiment triggers

Marlies Mayerhofer

Authenticate remote experiment trigger requests with signed and custom headers.

Remote experiment triggers can now be secured before your evaluation service starts a run.

• Enable the optional x-langfuse-signature HMAC header so your service can verify that requests came from Langfuse.
• Add custom headers for service-specific authentication or routing.
• Return a fast 2xx response and continue the experiment asynchronously.

Existing remote experiment configurations continue to work without signing or custom headers.