Find all active Claude instances
AI agents call claude_senator_discover to retrieve information from Claude Senator without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a pure read operation that queries the state of active Claude instances to support inter-Claude communication coordination. It retrieves data with no side effects, no code execution, and no modifications to system state. While the information returned might inform subsequent actions by an agent, the tool itself only performs a read/discovery function.
From the tool's definition The tool 'claude_senator_discover' is described as 'Find all active Claude instances' — a discovery/enumeration operation that retrieves information about running AI instances without modifying, deleting, or executing any code.
Attacks that exploit this kind of access
Find all active Claude instances. It is categorised as a Read tool in the Claude Senator MCP Server, which means it retrieves data without modifying state.
Register the Claude Senator MCP server in PolicyLayer and add a rule for claude_senator_discover: 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 Claude Senator. Nothing to install.
claude_senator_discover 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 claude_senator_discover 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 claude_senator_discover. 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.
claude_senator_discover is provided by the Claude Senator MCP server (vvkmnn/claude-senator-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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