[Deprecated: Use aiobs_diff_sessions] Compare two AI agent sessions.
AI agents call diff_sessions to retrieve information from Shepherd MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and compares session data from observability providers (Shepherd/Langfuse). Comparison is an analytical operation that queries existing data without side effects. No data is created, modified, deleted, or executed. The blast radius of misuse is limited to unauthorized information disclosure about AI agent sessions, which is a read-level risk.
From the tool's definition Tool description states it 'Compare[s] two AI agent sessions' - a query/analysis operation with no data modification, deletion, or execution of external operations.
Attacks that exploit this kind of access
[Deprecated: Use aiobs_diff_sessions] Compare two AI agent sessions. It is categorised as a Read tool in the Shepherd MCP MCP Server, which means it retrieves data without modifying state.
Register the Shepherd MCP server in PolicyLayer and add a rule for diff_sessions: 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 Shepherd MCP. Nothing to install.
diff_sessions 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 diff_sessions 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 diff_sessions. 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.
diff_sessions is provided by the Shepherd MCP server (neuralis-in/shepherd-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
diff_sessions is one line of Shepherd's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
Teams ship this data inside their own products. See what a licence covers →