Get a complete shadcn/ui block implementation
AI agents call get_block to retrieve information from shadcn MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries block implementation data from the shadcn/ui library. It has no side effects—it does not create, modify, delete, or execute code. The sibling tools ('get_component', 'list_blocks', 'list_components') reinforce that this server is a read-only data source for UI component information.
From the tool's definition Tool is named 'get_block' and described as 'Get a complete shadcn/ui block implementation', indicating retrieval of existing component/block source code and documentation without modification or execution.
Attacks that exploit this kind of access
Get a complete shadcn/ui block implementation. It is categorised as a Read tool in the shadcn MCP Server MCP Server, which means it retrieves data without modifying state.
Register the shadcn MCP Server MCP server in PolicyLayer and add a rule for get_block: 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 shadcn MCP Server. Nothing to install.
get_block 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 get_block 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 get_block. 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.
get_block is provided by the shadcn MCP Server MCP server (magnusrodseth/shadcn-mcp-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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