在代码库中搜索任意正则表达式 pattern，支持 Python/TypeScript/JavaScript/任意文本文件。
AI agents call scan_patterns to retrieve information from Ripple-MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a search/query operation that retrieves information about code patterns. It has no side effects, does not execute code, does not modify data, and does not delete anything. While regex searches could theoretically be CPU-intensive, the risk of misuse by an AI agent is minimal since the worst outcome is retrieving information about code structure.
From the tool's definition Tool description states it 'searches' (搜索) for regex patterns in a codebase across multiple languages. The operation is purely informational—it 'scans' and retrieves matching code locations without modifying, executing, or deleting anything.
Attacks that exploit this kind of access
在代码库中搜索任意正则表达式 pattern，支持 Python/TypeScript/JavaScript/任意文本文件。. It is categorised as a Read tool in the Ripple-MCP MCP Server, which means it retrieves data without modifying state.
Register the Ripple- MCP server in PolicyLayer and add a rule for scan_patterns: 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 Ripple-MCP. Nothing to install.
scan_patterns 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 scan_patterns 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 scan_patterns. 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.
scan_patterns is provided by the Ripple- MCP server (0xyubo/ripple-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
scan_patterns is one line of Ripple-'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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