export_view_to_file · Marqeta DiVA API MCP Server MCP

WHAT IT DOES

What export_view_to_file does on Marqeta DiVA API MCP Server

AI agents use export_view_to_file to create or update resources in Marqeta DiVA API MCP Server — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Marqeta DiVA API MCP Server environment.

WHY IT NEEDS A POLICY

Why export_view_to_file needs a policy

This tool creates and writes new files containing financial data exports (transactions, settlements, chargebacks, balances). While not destructive (the original data remains), it does irreversibly commit data to a new file artifact.

From the tool's definition Tool creates/exports data to a file (JSON or CSV format), which is a write operation that creates new artifacts. The description explicitly states it exports datasets to files.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

export_view_to_file Rate-limited

export_view_to_file 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": {
    "export_view_to_file": {
      "limits": [
        {
          "counter": "export_view_to_file_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 Marqeta DiVA API MCP Server, so you can run agents against it safely.

FAQ

Questions about export_view_to_file

What does the export_view_to_file tool do? +

Export datasets to a file (JSON or CSV). Note: DiVA API limits results to 10,000 records per query. It is categorised as a Write tool in the Marqeta DiVA API MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on export_view_to_file? +

Register the Marqeta DiVA API MCP Server MCP server in PolicyLayer and add a rule for export_view_to_file: 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 Marqeta DiVA API MCP Server. Nothing to install.

What risk level is export_view_to_file? +

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

Can I rate-limit export_view_to_file? +

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

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

export_view_to_file is provided by the Marqeta DiVA API MCP Server MCP server (zvika-finally/marqeta-diva-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.