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Server & Web Software

Prefect Prefect Server (self-hosted) — Default Password

Default username and password for the Prefect Prefect Server (self-hosted): (blank) / (blank). Learn how to log in and how to change the default credentials.

Self-hosted Prefect Server OSS ships with no authentication. The web UI and REST API on port 4200 are fully accessible without credentials. Docs recommend configuring Basic Auth or a reverse proxy before exposing externally.

UsernamePasswordAccessNotes
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Web UIPrefect Server UI and API on port 4200 — no authentication in default OSS deployment.

Responsible use

This database lists publicly documented default credentials so administrators can find and change them. Only use these on systems you own or are authorized to test.

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