List all known dangerous code patterns that Arc Security checks for. Returns the full pattern database with IDs, descriptions, severity levels, regex patterns, real-world examples, and mitigations. Use this to understand what to look for when reviewing skill code.
Part of the Arc Security server.
Free to start. No card required.
AI agents call list_dangerous_patterns to retrieve information from Arc Security without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.
Even though list_dangerous_patterns only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
{
"version": "1",
"default": "deny",
"tools": {
"list_dangerous_patterns": {}
}
}See the full Arc Security policy for all 14 tools.
These attack patterns abuse exactly the kind of access list_dangerous_patterns gives an agent. Each links to the full case and the policy that stops it:
Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.
List all known dangerous code patterns that Arc Security checks for. Returns the full pattern database with IDs, descriptions, severity levels, regex patterns, real-world examples, and mitigations. Use this to understand what to look for when reviewing skill code.. It is categorised as a Read tool in the Arc Security MCP Server, which means it retrieves data without modifying state.
Register the Arc Security MCP server in PolicyLayer and add a rule for list_dangerous_patterns: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Arc Security. Nothing to install.
list_dangerous_patterns is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the list_dangerous_patterns rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for list_dangerous_patterns. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
list_dangerous_patterns is provided by the Arc Security MCP server (arc-security-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 14 Arc Security tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
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