approve_proposal · Tron MCP: Risk & Policy

WHAT IT DOES

What approve_proposal does on Tron

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

PARAMETERS

Parameter	Type	Required	Description
`approve`	boolean	Yes	true to approve, false to disapprove
`network`	string	—	Network name. Defaults to mainnet.
`proposalId`	integer	Yes	The proposal ID to vote on

Parameters from the server's own tool schema.

WHY IT NEEDS A POLICY

Why approve_proposal needs a policy

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

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

approve_proposal Rate-limited

approve_proposal 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": {
    "approve_proposal": {
      "limits": [
        {
          "counter": "approve_proposal_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 Tron, so you can run agents against it safely.

FAQ

Questions about approve_proposal

What does the approve_proposal tool do? +

Vote to approve or disapprove a governance proposal (SR only). It is categorised as a Write tool in the Tron MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

What parameters does approve_proposal accept? +

approve_proposal accepts 3 parameters: approve, network, proposalId. Required: approve, proposalId. The full parameter table on this page comes from the server's own tool schema.

How do I enforce a policy on approve_proposal? +

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

What risk level is approve_proposal? +

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

Can I rate-limit approve_proposal? +

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

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

approve_proposal is provided by the Tron MCP server (@bankofai/mcp-server-tron). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.