{
  "id": "merge-policy:protected-prefixes",
  "_kind": "MergePolicy",
  "_file": "channels-hooks/merge-policies/protected-prefixes.yaml",
  "_cluster": "channels-hooks",
  "attributes": {
    "displayName": "Protected-prefixes env merge",
    "decisionRule": "most-restrictive-wins",
    "envMergeRule": "protected-prefixes",
    "protectedPrefixes": [
      "A5C_",
      "BABYSITTER_",
      "CLAUDE_"
    ],
    "systemMessageStrategy": "concatenate",
    "arraysMergeRule": "replace",
    "description": "Merge policy used when settings layers ship sensitive env keys that\nplugins SHOULD NOT be able to overwrite. Any persistEnv / contextVars\nkey whose name starts with one of `protectedPrefixes` is locked in by\nthe first handler that sets it; later handlers attempting to override\nsuch a key produce a HookMergeDiagnostic with outcome=conflict and\nseverity=warning.\n"
  },
  "outgoingEdges": [
    {
      "from": "merge-policy:protected-prefixes",
      "to": "decision-verb:deny",
      "kind": "merge_policy_orders_decision_verb",
      "attributes": {
        "rank": 1
      }
    },
    {
      "from": "merge-policy:protected-prefixes",
      "to": "decision-verb:ask",
      "kind": "merge_policy_orders_decision_verb",
      "attributes": {
        "rank": 2
      }
    },
    {
      "from": "merge-policy:protected-prefixes",
      "to": "decision-verb:allow",
      "kind": "merge_policy_orders_decision_verb",
      "attributes": {
        "rank": 3
      }
    },
    {
      "from": "merge-policy:protected-prefixes",
      "to": "decision-verb:continue",
      "kind": "merge_policy_orders_decision_verb",
      "attributes": {
        "rank": 4
      }
    },
    {
      "from": "merge-policy:protected-prefixes",
      "to": "decision-verb:noop",
      "kind": "merge_policy_orders_decision_verb",
      "attributes": {
        "rank": 5
      }
    }
  ],
  "incomingEdges": [
    {
      "from": "hook-surface:decision-point",
      "to": "merge-policy:protected-prefixes",
      "kind": "uses_merge_policy",
      "attributes": {}
    }
  ]
}