Provides a complete list of all Shadcn Space blocks that can be used in a project. Agents can use this to explore available block types before deciding which ones to add or customize.
AI agents call listBlocks to retrieve information from Shadcn Space MCP 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 available UI component blocks without creating, modifying, deleting, or executing anything. It has no side effects and poses minimal security risk—the information disclosed is intended to be explored by agents for decision-making only.
From the tool's definition Tool name 'listBlocks' and description states it 'Provides a complete list of all Shadcn Space blocks' - a pure enumeration/query operation with no modification capability.
Attacks that exploit this kind of access
Provides a complete list of all Shadcn Space blocks that can be used in a project. Agents can use this to explore available block types before deciding which ones to add or customize. It is categorised as a Read tool in the Shadcn Space MCP MCP Server, which means it retrieves data without modifying state.
Register the Shadcn Space MCP server in PolicyLayer and add a rule for listBlocks: 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 Space MCP. Nothing to install.
listBlocks 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 listBlocks 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 listBlocks. 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.
listBlocks is provided by the Shadcn Space MCP server (shadcnspace/shadcnspace-mcp). 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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