Get the function containing a specific line number.
AI agents call get_function_at_line to retrieve information from Code Intelligence MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries code metadata to identify which function contains a given line. It is a read-only lookup operation analogous to 'get' or 'fetch' in the Read category. The tool enables code exploration and understanding without side effects, fitting the pattern of IDE code intelligence features like hover tooltips or jump-to-definition.
From the tool's definition Tool name 'get_function_at_line' and description 'Get the function containing a specific line number' indicate retrieval of code structure metadata. No modification, deletion, or execution occurs.
Attacks that exploit this kind of access
Get the function containing a specific line number. It is categorised as a Read tool in the Code Intelligence MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Code Intelligence MCP Server MCP server in PolicyLayer and add a rule for get_function_at_line: 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 Code Intelligence MCP Server. Nothing to install.
get_function_at_line 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_function_at_line 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_function_at_line. 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_function_at_line is provided by the Code Intelligence MCP Server MCP server (tech-spoke/llm-helper). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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