--- title: Precursor --- [Skip to content](#_top) [API Reference](https://developers.cloudflare.com/api/typescript) Copy Markdown Open in **Claude**Open in **ChatGPT**Open in **Cursor** --- **Copy Markdown****View as Markdown** # Precursor ##### [Get Zone Precursor Config](https://developers.cloudflare.com/api/typescript/resources/precursor/methods/get) client.precursor.get(PrecursorGetParams {zone\_id } params, RequestOptionsoptions?): [PrecursorConfig]() {default\_mode, enforcement\_rules } GET/zones/{zone\_id}/precursor ##### [Update Zone Precursor Config](https://developers.cloudflare.com/api/typescript/resources/precursor/methods/update) client.precursor.update(PrecursorUpdateParams {zone\_id, default\_mode, enforcement\_rules } params, RequestOptionsoptions?): [PrecursorConfig]() {default\_mode, enforcement\_rules } PUT/zones/{zone\_id}/precursor ##### ModelsExpand Collapse
EnforcementRule {expression, mode, id, 2 more } expression: string The filter expression that determines which requests the rule matches. maxLength4000 Link to this property
mode: "min-friction"| "max-security" The override mode Precursor applies to requests matching an enforcement rule. Unlike default_mode, this cannot be off. One of the following: "min-friction" Link to this property "max-security" Link to this property
Link to this property id?: string The read-only identifier that Cloudflare assigns to the rule. Link to this property description?: string An informative description of the rule. Link to this property enabled?: boolean Whether the rule is active. Link to this property
[Link to this property](<#(resource)%20precursor%20%3E%20(model)%20enforcement_rule%20%3E%20(schema)>)
PrecursorConfig {default\_mode, enforcement\_rules }
Deprecateddefault\_mode?: "off"| "min-friction"| "max-security" The zone-level Precursor enforcement mode applied to requests that do not match a more specific enforcement rule. One of the following: "off" Link to this property "min-friction" Link to this property "max-security" Link to this property
Link to this property
Deprecatedenforcement\_rules?: Array<EnforcementRule {expression, mode, id, 2 more } > The ordered list of enforcement rules for the zone. expression: string The filter expression that determines which requests the rule matches. maxLength4000 Link to this property
mode: "min-friction"| "max-security" The override mode Precursor applies to requests matching an enforcement rule. Unlike default_mode, this cannot be off. One of the following: "min-friction" Link to this property "max-security" Link to this property
Link to this property id?: string The read-only identifier that Cloudflare assigns to the rule. Link to this property description?: string An informative description of the rule. Link to this property enabled?: boolean Whether the rule is active. Link to this property
Link to this property
[Link to this property](<#(resource)%20precursor%20%3E%20(model)%20precursor_config%20%3E%20(schema)>)