Find all functions that call a given function.
AI agents call find_callers to retrieve information from Codebase Contextifier 9000 without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves call graph information from indexed codebases without creating, modifying, deleting, or executing any code. It is purely a read/query operation that returns dependency and relationship data. The sibling tools confirm this server provides analysis capabilities (detect_dependencies, get_call_graph, get_class_hierarchy) rather than code modification tools.
From the tool's definition Tool performs semantic code search to 'find all functions that call a given function' - a query operation with no modification, deletion, or execution of code.
Attacks that exploit this kind of access
Find all functions that call a given function. It is categorised as a Read tool in the Codebase Contextifier 9000 MCP Server, which means it retrieves data without modifying state.
Register the Codebase Contextifier 9000 MCP server in PolicyLayer and add a rule for find_callers: 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 Codebase Contextifier 9000. Nothing to install.
find_callers 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 find_callers 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 find_callers. 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.
find_callers is provided by the Codebase Contextifier 9000 MCP server (jarmentor/codebase-contextifier-9000). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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