Search for functions whose name contains the given substring.
AI agents call search_functions_by_name to retrieve information from Binary Ninja Cline MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a search query against function names in a binary file, returning matching results. It has no side effects, does not execute code, does not modify data, and does not delete anything. It is purely informational retrieval, fitting the Read category (search, list, get, fetch operations).
From the tool's definition Tool description states it 'search[es] for functions whose name contains the given substring.' This is a query operation with no modification or execution of code. The action is read-only retrieval of function metadata from a binary analysis context.
Attacks that exploit this kind of access
Search for functions whose name contains the given substring. It is categorised as a Read tool in the Binary Ninja Cline MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Binary Ninja Cline MCP Server MCP server in PolicyLayer and add a rule for search_functions_by_name: 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 Binary Ninja Cline MCP Server. Nothing to install.
search_functions_by_name 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 search_functions_by_name 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 search_functions_by_name. 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.
search_functions_by_name is provided by the Binary Ninja Cline MCP Server MCP server (opensensor/bn_cline_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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