insert_table_rows · Dune MCP: Risk & Policy

WHAT IT DOES

What insert_table_rows does on Dune

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

WHY IT NEEDS A POLICY

Why insert_table_rows needs a policy

The tool inserts rows into a table, which is a reversible write operation that modifies data. In the context of a blockchain analytics platform, this could affect analysis results and datasets, but the action is not destructive (rows can be deleted) and does not involve financial transactions or code execution.

From the tool's definition Tool name 'insert_table_rows' indicates data insertion/modification. Server context shows 'upload custom datasets' and sibling tools include 'create_table', 'delete_table', and 'clear_table', confirming write operations on blockchain data analytics platform.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

insert_table_rows Rate-limited

insert_table_rows 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": {
    "insert_table_rows": {
      "limits": [
        {
          "counter": "insert_table_rows_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 Dune, so you can run agents against it safely.

FAQ

Questions about insert_table_rows

What does the insert_table_rows tool do? +

insert_table_rows. It is categorised as a Write tool in the Dune MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on insert_table_rows? +

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

What risk level is insert_table_rows? +

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

Can I rate-limit insert_table_rows? +

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

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

insert_table_rows is provided by the Dune MCP server (mwamedacen/dune-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.