AI agents call get_block to retrieve information from Shadcn without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
blockName | string | Yes | Name of the block (e.g., "dashboard-01", "login-form") |
Parameters from the server's own tool schema.
This tool retrieves shadcn/ui component code snippets or definitions. It performs no side effects, does not execute code, does not modify data, and does not involve financial transactions. It is purely informational retrieval, consistent with other sibling tools like 'get_component' and 'list_blocks' on the same server.
From the tool's definition Tool name 'get_block' and description 'Get a complete shadcn/ui block implementation' indicate data retrieval with no modification or execution of external systems.
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, which means it retrieves data without modifying state.
get_block accepts 1 parameter: blockName. Required: blockName. The full parameter table on this page comes from the server's own tool schema.
Register the Shadcn 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. 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 (@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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