lambda_generate_function

Generate an AWS Lambda function with boilerplate code, handler setup, and event typing

SERVERPlugin Hub SOURCE@barnburner121/plugin-hub-mcp

Medium RISK CLASS

Category Write

Parameters 00 required

Recommended Rate-limitedsee the rule below

Registry record Grade F, identity unverified Pull the record →

This record as markdown: /tools/barnburner121-plugin-hub-mcp/lambda-generate-function.md

WHAT IT DOES

What lambda_generate_function does on Plugin Hub

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

RISK

Why lambda_generate_function is rated Medium

An AI agent can call lambda_generate_function faster than any human can review: one bad instruction and it creates or modifies resources in Plugin Hub by the hundred, each call as confident as the last.

Attacks that exploit this kind of access

RECOMMENDED RULE

The rule that runs lambda_generate_function safely

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

lambda_generate_function Rate-limited

lambda_generate_function 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": {
    "lambda_generate_function": {
      "limits": [
        {
          "counter": "lambda_generate_function_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 Plugin Hub, apply this rule, and every lambda_generate_function call is checked against it from then on.

FAQ

Questions about lambda_generate_function

What does the lambda_generate_function tool do? +

Generate an AWS Lambda function with boilerplate code, handler setup, and event typing. It is categorised as a Write tool in the Plugin Hub MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on lambda_generate_function? +

Register the Plugin Hub MCP server in PolicyLayer and add a rule for lambda_generate_function: 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 Plugin Hub. Nothing to install.

What risk level is lambda_generate_function? +

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

Can I rate-limit lambda_generate_function? +

Yes. Add a rate_limit block to the lambda_generate_function 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 lambda_generate_function completely? +

Set action: deny in the PolicyLayer policy for lambda_generate_function. 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 lambda_generate_function? +

lambda_generate_function is provided by the Plugin Hub MCP server (@barnburner121/plugin-hub-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

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