Return the active session or a requested session record.
AI agents call get_session to retrieve information from Decision State MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a read-only query operation to retrieve session records. It returns data without creating, modifying, deleting, or executing any operations. The action is non-destructive and has no side effects beyond data retrieval. The blast radius of misuse is minimal—an agent could only read session information that already exists.
From the tool's definition Tool name 'get_session' and description 'Return the active session or a requested session record' indicate retrieval of existing session data with no modification or execution.
Attacks that exploit this kind of access
Return the active session or a requested session record. It is categorised as a Read tool in the Decision State MCP MCP Server, which means it retrieves data without modifying state.
Register the Decision State MCP server in PolicyLayer and add a rule for get_session: 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 Decision State MCP. Nothing to install.
get_session 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 get_session 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 get_session. 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.
get_session is provided by the Decision State MCP server (koolercat/mcp-state). 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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