--- description: CSP directives supported by content security rules title: Supported CSP directives image: https://developers.cloudflare.com/og-docs.png --- [Skip to content](#main-content) > Documentation Index > Fetch the complete documentation index at: https://developers.cloudflare.com/client-side-security/llms.txt > Use this file to discover all available pages before exploring further. # Supported CSP directives Last updated Aug 24, 2026|Copy as Markdown|[View as Markdown](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/client-side-security/rules/csp-directives/index.md)|[Agent setup](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/agent-setup/) [Content security rules](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/client-side-security/rules/) support most Content Security Policy (CSP) directives, covering both monitored and unmonitored resources. You can use a content security rule to control other types of resources besides scripts and their connections, even though Cloudflare is not monitoring these resources. Each CSP directive can contain multiple values, including: * Schemes * Hostnames * URIs * Special keywords between single quotes (for example, `'none'`) * Hashes between single quotes (for example, `'sha384-oqVuAfXRKap7fdgcCY5uykM6+R9GqQ8K/uxy9rx7HNQlGYl1kPzQho1wx4JwY8wC'`) Hostname and URI values support a `*` wildcard for the leftmost subdomain. The following table lists the supported CSP directives and special values you can use in content security rules: | Directive | Name in the dashboard | Supported special values | Monitored | | ------------------------- | ------------------------- | ------------------------------------------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------- | | script-src | Scripts | 'none''self''unsafe-inline''unsafe-eval''' | [Yes](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/client-side-security/detection/monitor-connections-scripts/) | | connect-src | Connections | 'none''self''unsafe-inline''unsafe-eval''' | [Yes](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/client-side-security/detection/monitor-connections-scripts/) | | default-src | Default | 'none''self''unsafe-inline''unsafe-eval''' | No | | img-src | Images | 'none''self''unsafe-inline''unsafe-eval''' | No | | style-src | Styles | 'none''self''unsafe-inline''unsafe-eval''' | No | | font-src | Fonts | 'none''self''unsafe-inline''unsafe-eval''' | No | | object-src | Objects | 'none''self''unsafe-inline''unsafe-eval''' | No | | media-src | Media | 'none''self''unsafe-inline''unsafe-eval''' | No | | child-src | Child | 'none''self''unsafe-inline''unsafe-eval''' | No | | form-action | Form actions | 'none''self''unsafe-inline''unsafe-eval''' | No | | worker-src | Workers | 'none''self''unsafe-inline''unsafe-eval''' | No | | base-uri | Base URI | 'none''self''unsafe-inline''unsafe-eval''' | No | | manifest-src | Manifests | 'none''self''unsafe-inline''unsafe-eval''' | No | | frame-src | Frames | 'none''self''unsafe-inline''unsafe-eval''' | No | | frame-ancestors | Frame ancestors | 'none''self' | No | | upgrade-insecure-requests | Upgrade insecure requests | N/A | No | ## More resources For more information on CSP directives and their values, refer to the following resources in the MDN documentation: * [Content-Security-Policy response header ↗](https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Content-Security-Policy) * [CSP guide ↗](https://developer.mozilla.org/en-US/docs/Web/HTTP/Guides/CSP) Was this helpful? YesNo ## On this page [![](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/_astro/logo.te5VL_aD.svg)Docs](https://docs-durable-objects-instance-replaced-errors.previews.developers.cloudflare.com/) ```json {"@context":"https://schema.org","@type":"TechArticle","@id":"https://developers.cloudflare.com/client-side-security/rules/csp-directives/#page","headline":"Supported CSP directives · Client-side security docs","description":"CSP directives supported by content security rules","url":"https://developers.cloudflare.com/client-side-security/rules/csp-directives/","inLanguage":"en","image":"https://developers.cloudflare.com/og-docs.png","dateModified":"2026-08-24","publisher":{"@type":"Organization","name":"Cloudflare","description":"One platform for your apps, agents, and workforce. 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