import_flat_file

Server Tradeblocks tradeblocks-mcp

Category Write

Risk class Medium

Parameters 00 required

WHAT IT DOES

What import_flat_file does on Tradeblocks

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

WHY IT NEEDS A POLICY

Why import_flat_file needs a policy

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

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

import_flat_file Rate-limited

import_flat_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": {
    "import_flat_file": {
      "limits": [
        {
          "counter": "import_flat_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 Tradeblocks, so you can run agents against it safely.

FAQ

Questions about import_flat_file

What does the import_flat_file tool do? +

Provider-agnostic flat-file ingest. Reads rows from a local file (parquet, csv, jsonl, .gz \u2014 anything DuckDB can read via read_parquet/read_csv/read_json) and writes them to a target market store for a single partition.\n\nTypical workflow:\n 1. Sniff the file: run_sql SELECT * FROM read_parquet(. It is categorised as a Write tool in the Tradeblocks MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on import_flat_file? +

Register the Tradeblocks MCP server in PolicyLayer and add a rule for import_flat_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 Tradeblocks. Nothing to install.

What risk level is import_flat_file? +

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

Can I rate-limit import_flat_file? +

Yes. Add a rate_limit block to the import_flat_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 import_flat_file completely? +

Set action: deny in the PolicyLayer policy for import_flat_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 import_flat_file? +

import_flat_file is provided by the Tradeblocks MCP server (tradeblocks-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.