guardrail_create_policy
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Create a persistent governance policy that guardrail_check evaluates on every subsequent call. Define rules using and/or/not operators over action types, resource patterns, and budget thresholds. Call this before using guardrail_check — checks require at least one active policy. Policies persist until explicitly deleted. Duplicate policy names return an error. Returns the created policy with its ID and active status.
Input schema
| Property | Type | Required | Description |
|---|---|---|---|
| name | string | yes | Unique policy name per org. Examples: 'no-delete-in-prod', 'budget-cap-50', 'pii-block'. |
| description | string | no | Optional human-readable summary of what this policy enforces. Returned in guardrail_check responses and guardrail_list_policies output for auditability. |
| rules | array | yes | Array of rule objects evaluated against the proposed_action in guardrail_check. Leaf operators: eq, starts_with, contains, gt, lt (compare field to value). Compound operators: and, or, not (nest sub-rules in a rules array). Example: [{operator:'eq', field:'type', value:'file_write'}] blocks all file writes. Nested example: [{operator:'and', rules:[{operator:'eq',field:'type',value:'api_call'},{operator:'contains',field:'url',value:'prod'}]}] blocks prod API calls. |
| action_types | array | no | Optional. Restrict this policy to only evaluate when proposed_action.type matches one of these values. Examples: ['file_write', 'api_call', 'db_delete']. Omit to apply the policy to all action types regardless of type field. |
| priority | number | no | Optional. Evaluation order. Default: 0. |
Raw JSON schema
{
"type": "object",
"properties": {
"name": {
"type": "string",
"description": "Unique policy name per org. Examples: 'no-delete-in-prod', 'budget-cap-50', 'pii-block'."
},
"description": {
"type": "string",
"description": "Optional human-readable summary of what this policy enforces. Returned in guardrail_check responses and guardrail_list_policies output for auditability."
},
"rules": {
"type": "array",
"description": "Array of rule objects evaluated against the proposed_action in guardrail_check. Leaf operators: eq, starts_with, contains, gt, lt (compare field to value). Compound operators: and, or, not (nest sub-rules in a rules array). Example: [{operator:'eq', field:'type', value:'file_write'}] blocks all file writes. Nested example: [{operator:'and', rules:[{operator:'eq',field:'type',value:'api_call'},{operator:'contains',field:'url',value:'prod'}]}] blocks prod API calls.",
"items": {
"type": "object",
"properties": {
"operator": {
"type": "string",
"description": "Rule operator: eq | starts_with | contains | gt | lt | and | or | not."
},
"field": {
"type": "string",
"description": "Field path on proposed_action (e.g. 'action_type', 'path', 'amount')."
},
"value": {
"type": "string",
"description": "Comparison value for leaf operators. String, number, or boolean as string."
},
"rules": {
"type": "array",
"description": "Nested rules for compound operators (and/or/not)."
}
},
"required": [
"operator"
]
}
},
"action_types": {
"type": "array",
"items": {
"type": "string"
},
"description": "Optional. Restrict this policy to only evaluate when proposed_action.type matches one of these values. Examples: ['file_write', 'api_call', 'db_delete']. Omit to apply the policy to all action types regardless of type field."
},
"priority": {
"type": "number",
"description": "Optional. Evaluation order. Default: 0."
}
},
"required": [
"name",
"rules"
],
"additionalProperties": false
}