Content Security Policy (CSP) Builder
Joins checked directive names and source tokens into CSP text. It does not test browser enforcement or compatibility with a deployed page.
About this content security policy (csp) builder
Joins checked directive names and source tokens into CSP text. It does not test browser enforcement or compatibility with a deployed page Validates and converts interface schemas client-side without transmitting private endpoint specifications.
API contract & interface schema logic
Formats the selected content-security-policy directives into a semicolon-delimited header string. It does not inspect a deployed page, test browser enforcement, or discover required resource sources.
Worked schema conversion scenario
Scenario: Format three supplied CSP directives as local header text without browser enforcement.
Sample input:
Processing: Check directive names and source tokens, then join them with semicolons; policy effectiveness is not tested.
Illustrative output:
Schema version & syntax constraints
Directive names must be ASCII letter/digit/hyphen tokens beginning with a letter, and source tokens cannot contain whitespace, semicolons or NUL. This does not validate CSP directive vocabulary, source-expression grammar, nonce/hash semantics or browser enforcement; unsafe single tokens can pass.
API specifications and schema models in Content Security Policy (CSP) Builder reflect OpenAPI and JSON Schema standards. Verify generated schemas against your runtime validator.
Client-side schema processing boundary
Schema analysis and protocol mapping in Content Security Policy (CSP) Builder execute locally in the browser tab without uploading endpoint definitions.
OpenAPI Specification & JSON Schema standards
OpenAPI Specification standards and JSON Schema draft definitions:
Content Security Policy (CSP) Builder verification · Audit standards
How to use it
- Paste JSON with a directives map or use defaults.
- Join each directive name and values into a semicolon-separated CSP string.
- Review and copy the header value.
Frequently asked questions
How does CSP Builder format directives?+
It reads a nonempty directives object from JSON or uses three local defaults. Each directive value can be a string or an array of strings; source tokens are joined with spaces and directives with semicolons in input order.
Can you show an input and its result?+
`{"directives":{"default-src":["'self'"],"img-src":["https:","data:"],"object-src":["'none'"]}}` produces `default-src 'self'; img-src https: data:; object-src 'none'` in the input's insertion order.
Which CSP validation is absent?+
It does not parse source-expression grammar, test browser support, inspect inline scripts, nonces, hashes, report endpoints, inherited policies, conflicting headers or deployed content.
Does a CSP string protect a page?+
No. It must be delivered as a correctly configured response header or policy and tested with the real application resources and browser behavior.