Critical-risk tools in Kit

Critical severity Kit MCP Server 2 of 13 tools

2 of the 13 tools in Kit are classified as critical risk. This page profiles those tools specifically, with recommended policy actions and the attack patterns that target them.

Every operation listed below is an action PolicyLayer recommends controlling at the transport layer. Open any tool to see the full profile, risk score, and YAML policy snippet.

Tools at critical risk

manage_custom_fields Destructive

Manage Kit custom subscriber fields — list all fields, create, rename, or delete (destructive). Actions: list, create, update, delete
manage_purchases Financial

Manage Kit purchases — list, get details, or record a new purchase. Requires OAuth authentication. Actions: list, get, create

Attacks that target this class

Critical-risk tools in any server share these documented attack patterns. Each links to the full case and the defensive policy.

Destructive Action Autonomy
Privilege escalation via admin-only tools
Data exfiltration via tool chaining
Runaway Tool Loops

Critical-risk tools in Kit

Tools at critical risk

Attacks that target this class

More on Kit

Enforce policy on every Kit tool call.