AI agents call list_targets to retrieve information from Re without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and enumerates configuration or system information (available targets/processors/loaders/languages) from the reverse-engineering backend. It performs no modifications, deletions, or external operations—purely informational. Severity is low because listing metadata poses minimal security risk even if an AI agent calls it repeatedly or unexpectedly.
From the tool's definition Tool name 'list_targets' and description 'List available targets (processors, loaders, languages, etc.)' indicates a query/retrieval operation with no side effects.
Attacks that exploit this kind of access
List available targets (processors, loaders, languages, etc.). It is categorised as a Read tool in the Re MCP Server, which means it retrieves data without modifying state.
Register the Re MCP server in PolicyLayer and add a rule for list_targets: 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 Re. Nothing to install.
list_targets 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_targets 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_targets. 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_targets is provided by the Re MCP server (jtsylve/re-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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