Search guidelines by content, title, or tags
AI agents call search-guidelines to retrieve information from Visa Design System MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool retrieves and searches design guidelines, which is a read-only operation with no side effects. It does not create, modify, delete, or execute any code or external operations. It simply queries and returns design system documentation. The blast radius of misuse is minimal—an AI agent could at most retrieve inappropriate design guidelines, which causes no data loss or system impact.
From the tool's definition Tool is named 'search-guidelines' with description 'Search guidelines by content, title, or tags'. This is a query/search operation that retrieves information from a design system resource without modifying, deleting, or executing any operations.
Attacks that exploit this kind of access
Search guidelines by content, title, or tags. It is categorised as a Read tool in the Visa Design System MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Visa Design System MCP Server MCP server in PolicyLayer and add a rule for search-guidelines: 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 Visa Design System MCP Server. Nothing to install.
search-guidelines 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-guidelines 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-guidelines. 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-guidelines is provided by the Visa Design System MCP Server MCP server (marysuneela/mcp-vpds). 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.
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