Should I deploy CSP directly in enforced mode?

Usually start with Report-Only in production, inspect violations, then enforce once legitimate resources are covered.

Does this validate every possible CSP directive?

No. It focuses on the directives most teams need first.

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CSP Builder

Edit practical defaults and copy an enforced or report-only CSP header.

Local execution receiptinput path disclosedTool content stays out of MonoTools URLs and API requests.

Working input: Browser memory
Cross-tool handoff: Session only · 10 min
URL payload: Never
Export: Explicit action

Verify it: open DevTools Network, clear the log, use the tool, then inspect fetch/XHR requests. Page assets and optional aggregate analytics may use the network; tool input is not included.

Full privacy model

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How to use

01Edit each CSP directive source list.
02Toggle enforced or report-only mode.
03Copy the complete HTTP header.

FAQ

Should I deploy CSP directly in enforced mode?: Usually start with Report-Only in production, inspect violations, then enforce once legitimate resources are covered.
Does this validate every possible CSP directive?: No. It focuses on the directives most teams need first.

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