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Security-sensitive behavior must be enforced from trusted inputs and with validated permission logic; do not rely on mechanisms that an untrusted repository can change or that are known to be ineffective as access control.

Apply these rules:

1) Don’t treat “ignore/filter” files as security boundaries

• If the tool/runtime can still access files via explicit requests, assume filters are not protective.
• Prefer hard enforcement that can cancel/block execution (e.g., task/tool blocking via hooks), and document that filters are only meant to reduce irrelevant data.

2) Don’t rely on repo-provided hooks for enforcement

• If you check out a PR/repo, that code can modify hooks/plugins/config used during execution.
• Enforce deny/cancel behavior via global (user/host) hook locations or organization-controlled remote configuration.

3) Validate tool permission inputs by shape

• Permission checks should parse/validate the tool request structure (types/fields) before deciding.
• Avoid brittle string prefix checks that can be bypassed by different argument formatting.

4) Use minimal, trust-aware allowlists for commands

• Do not assume “read-only” commands are harmless in untrusted repositories (e.g., Git may execute hooks/programs depending on config).
• Only allow an explicitly vetted set of commands/flags, and only in repositories you trust.

5) Prevent committing sensitive cached configuration

• Add cached settings directories to .gitignore using recursive patterns so nested folders are covered.

Example patterns:

• Trust-boundary hook enforcement (global path, not repo):

  # ~/.cline/hooks/PreToolUse (example logic)
  # Cancel run_commands unless it matches your allowlist.
  # Read hook JSON from stdin, inspect tool_call.name + input shape, and exit/emit a cancel signal.
  

• Shape-validated command approval: ```ts type RunCommandsInput = { commands?: unknown };

function approve(request: { toolName: string; input: unknown; }): { approved: boolean } { const input = request.input as RunCommandsInput; const allow = new Set([“ls”, “git status”]);

if (request.toolName !== “run_commands”) return { approved: false }; if (!Array.isArray(input.commands)) return { approved: false };

const ok = input.commands.every( (c) => typeof c === “string” && allow.has(c.trim()) ); return { approved: ok }; }

- Secret hygiene:
```gitignore
**/.cline/enterprise/
**/.cline/remote-config/

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