create_aptos_indexer · Aptos MCP: Risk & Policy

WHAT IT DOES

What create_aptos_indexer does on Aptos

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

WHY IT NEEDS A POLICY

Why create_aptos_indexer needs a policy

This tool creates a new project structure (indexer configuration, boilerplate code) which is a reversible write operation. It does not execute arbitrary code against live systems, delete data, or move funds. The blast radius is medium because misconfiguration of an indexer could cause downstream data processing issues, but the operation itself is reversible (the project can be deleted or modified).

From the tool's definition Tool name 'create_aptos_indexer' and description states it 'Creates a new Aptos indexer project based on the example processor' — the word 'Creates' indicates a write operation that generates new project files/resources.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_aptos_indexer Rate-limited

create_aptos_indexer 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": {
    "create_aptos_indexer": {
      "limits": [
        {
          "counter": "create_aptos_indexer_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 Aptos, so you can run agents against it safely.

FAQ

Questions about create_aptos_indexer

What does the create_aptos_indexer tool do? +

Creates a new Aptos indexer project based on the example processor. It is categorised as a Write tool in the Aptos MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_aptos_indexer? +

Register the Aptos MCP server in PolicyLayer and add a rule for create_aptos_indexer: 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 Aptos. Nothing to install.

What risk level is create_aptos_indexer? +

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

Can I rate-limit create_aptos_indexer? +

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

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

create_aptos_indexer is provided by the Aptos MCP server (tlazypanda/aptos-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.