test_aptos_contract · Aptos MCP: Risk & Policy

WHAT IT DOES

What test_aptos_contract does on Aptos

AI agents invoke test_aptos_contract to trigger actions in Aptos. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why test_aptos_contract needs a policy

This tool runs tests via the Aptos CLI, which executes code/commands on the system. CLI execution can have side effects depending on the test setup (network interactions, state changes on testnets, resource consumption). It goes beyond mere reading since it actively invokes the CLI to run contract tests.

From the tool's definition "Test an Aptos Move contract using the Aptos CLI"

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

test_aptos_contract Rate-limited

test_aptos_contract stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "test_aptos_contract": {
      "limits": [
        {
          "counter": "test_aptos_contract_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-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 test_aptos_contract

What does the test_aptos_contract tool do? +

Test an Aptos Move contract using the Aptos CLI. It is categorised as a Execute tool in the Aptos MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on test_aptos_contract? +

Register the Aptos MCP server in PolicyLayer and add a rule for test_aptos_contract: 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 test_aptos_contract? +

test_aptos_contract is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit test_aptos_contract? +

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

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

test_aptos_contract 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.