auth_scaffold

SERVERBreakpoint SOURCEbreakpoint-mcp

Medium RISK CLASS

Category Write

Parameters 41 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/breakpoint-mcp/auth-scaffold.md

WHAT IT DOES

What auth_scaffold does on Breakpoint

AI agents use auth_scaffold to create or update resources in Breakpoint, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Breakpoint environment.

Parameter	Type	Required	Description
`sdk`	string	Yes	Which backend SDK to target
`confirm`	boolean	—	Auto-approve this destructive action (skip the confirmation prompt)
`to_path`	string	—	Destination res:// .gd path (default res://backend/auth.gd)
`overwrite`	boolean	—	Overwrite if the file already exists (default false)

Parameters from the server's own tool schema.

RISK

Why auth_scaffold is rated Medium

While the tool description uses the term 'DESTRUCTIVE,' the actual operation is file creation/generation rather than deletion or irreversible destruction. The tool writes new GDScript files (`.gd` extension) which can be modified or deleted by users. This is a Write operation (creates new files).

From the tool's definition Tool description explicitly states 'DESTRUCTIVE (writes a .gd)' — it generates and writes GDScript helper files to disk.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs auth_scaffold safely

PolicyLayer is an MCP gateway: it sits between your AI agents and Breakpoint, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For auth_scaffold, this is the rule to start with:

auth_scaffold Rate-limited

auth_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": {
    "auth_scaffold": {
      "limits": [
        {
          "counter": "auth_scaffold_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL → Instant setup, no code required.

The button opens the PolicyLayer dashboard: create your workspace, connect Breakpoint, apply this rule, and every auth_scaffold call is checked against it from then on.

FAQ

Questions about auth_scaffold

What does the auth_scaffold tool do? +

Generate login/register/logout helpers against an installed backend SDK. FEATURE-DETECTED both ways: if the SDK provides no auth API (Photon is realtime transport), degrades to 'unsupported_feature'; if the SDK is not installed, degrades to 'install <SDK> first'. Neither writes anything. DESTRUCTIVE (writes a .gd) — gated. It is categorised as a Write tool in the Breakpoint MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

What parameters does auth_scaffold accept? +

auth_scaffold accepts 4 parameters: sdk, confirm, to_path, overwrite. Required: sdk. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on auth_scaffold? +

Register the Breakpoint MCP server in PolicyLayer and add a rule for auth_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 Breakpoint. Nothing to install.

What risk level is auth_scaffold? +

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

Can I rate-limit auth_scaffold? +

Yes. Add a rate_limit block to the auth_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 auth_scaffold completely? +

Set action: deny in the PolicyLayer policy for auth_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 auth_scaffold? +

auth_scaffold is provided by the Breakpoint MCP server (breakpoint-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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