mcp_scaffold · SIN-Code MCP Server Builder Skill MCP

WHAT IT DOES

What mcp_scaffold does on SIN-Code MCP Server Builder Skill

AI agents use mcp_scaffold to create or update resources in SIN-Code MCP Server Builder Skill — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your SIN-Code MCP Server Builder Skill environment.

WHY IT NEEDS A POLICY

Why mcp_scaffold needs a policy

Scaffolding creates new files and directory structures on disk, which is a Write operation. It is reversible (files can be deleted). Confidence is lowered because the tool description is empty, so behavior is inferred from the server description and tool name alone.

From the tool's definition Tool name 'mcp_scaffold' and server description 'Scaffolds new MCP servers... with templates for Python, Node, Go' — scaffolding typically creates new project structures/files.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

mcp_scaffold Rate-limited

mcp_scaffold stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "mcp_scaffold": {
      "limits": [
        {
          "counter": "mcp_scaffold_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches SIN-Code MCP Server Builder Skill, so you can run agents against it safely.

FAQ

Questions about mcp_scaffold

What does the mcp_scaffold tool do? +

mcp_scaffold. It is categorised as a Write tool in the SIN-Code MCP Server Builder Skill MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on mcp_scaffold? +

Register the SIN-Code MCP Server Builder Skill MCP server in PolicyLayer and add a rule for mcp_scaffold: 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 SIN-Code MCP Server Builder Skill. Nothing to install.

What risk level is mcp_scaffold? +

mcp_scaffold is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit mcp_scaffold? +

Yes. Add a rate_limit block to the mcp_scaffold 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.

How do I block mcp_scaffold completely? +

Set action: deny in the PolicyLayer policy for mcp_scaffold. 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.

What MCP server provides mcp_scaffold? +

mcp_scaffold is provided by the SIN-Code MCP Server Builder Skill MCP server (opensin-code/sin-code-mcp-server-builder-skill). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.