Search within current buffer with regex support and options
AI agents call vim_search to retrieve information from Mcp Neovim Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Searching is a read-only operation that queries the buffer contents and returns matches. The tool has no side effects, does not modify, delete, or execute code. Regex search within a buffer is a classic Read category operation. Severity is low because misuse cannot cause data loss, financial impact, or unintended execution.
From the tool's definition Tool name is 'vim_search' and description states it 'Search within current buffer with regex support and options' — a search operation that retrieves and displays matching text without modifying data.
Attacks that exploit this kind of access
Search within current buffer with regex support and options. It is categorised as a Read tool in the Mcp Neovim Server MCP Server, which means it retrieves data without modifying state.
Register the Mcp Neovim Server MCP server in PolicyLayer and add a rule for vim_search: 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 Mcp Neovim Server. Nothing to install.
vim_search 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 vim_search 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 vim_search. 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.
vim_search is provided by the Mcp Neovim Server MCP server (mcp-neovim-server). 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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