Get only error-level diagnostics from the workspace
AI agents call get_errors to retrieve information from Diagnostics MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and filters error-level diagnostics from VS Code's diagnostic system. It performs a read-only query operation with no side effects—it does not execute code, modify data, delete resources, or trigger external operations. The action is purely informational, making it a Read-category tool with low severity risk.
From the tool's definition Tool name 'get_errors' and description 'Get only error-level diagnostics from the workspace' indicate a retrieval operation that queries existing diagnostic data without modification, deletion, or execution of code.
Attacks that exploit this kind of access
Get only error-level diagnostics from the workspace. It is categorised as a Read tool in the Diagnostics MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Diagnostics MCP Server MCP server in PolicyLayer and add a rule for get_errors: 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 Diagnostics MCP Server. Nothing to install.
get_errors 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_errors 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_errors. 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_errors is provided by the Diagnostics MCP Server MCP server (maaz0313-png/diagnostics-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
get_errors is one line of Diagnostics MCP Server's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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