[Langfuse] Get a specific trace with its observations. Returns full trace data including all observations (generations, spans, events).
AI agents call langfuse_get_trace 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 queries and retrieves observability data (traces and observations) from Langfuse for debugging and analysis purposes. It has no side effects—it does not create, modify, delete, or execute any external operations. The blast radius is minimal as misuse would only expose existing session data that an authenticated user could query through normal means. Classified as Read with low severity.
From the tool's definition Tool name 'langfuse_get_trace' and description 'Get a specific trace with its observations. Returns full trace data' indicate a retrieval operation.
Attacks that exploit this kind of access
[Langfuse] Get a specific trace with its observations. Returns full trace data including all observations (generations, spans, events). 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 langfuse_get_trace: 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.
langfuse_get_trace 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 langfuse_get_trace 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 langfuse_get_trace. 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.
langfuse_get_trace 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.
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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