import_market_csv · Tradeblocks MCP: Risk & Policy

WHAT IT DOES

What import_market_csv does on Tradeblocks

AI agents use import_market_csv 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_market_csv needs a policy

An AI agent can call import_market_csv 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_market_csv Rate-limited

import_market_csv 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_market_csv": {
      "limits": [
        {
          "counter": "import_market_csv_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_market_csv

What does the import_market_csv tool do? +

Import minute bars from a CSV file into the spot dataset via SpotStore.writeBars. Daily / date_context outputs are derived automatically by EnrichedStore.compute() (disable with skip_enrichment=true). VIX/VIX9D/VIX3M imports also refresh the cross-ticker date_context via EnrichedStore.computeContext(). Required column_mapping fields: date (or unix time), time (auto-extracted from a Unix timestamp date column when the CSV has only one timestamp column), open, high, low, close. Use ~ for home directory in file_path. 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_market_csv? +

Register the Tradeblocks MCP server in PolicyLayer and add a rule for import_market_csv: 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_market_csv? +

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

Can I rate-limit import_market_csv? +

Yes. Add a rate_limit block to the import_market_csv 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_market_csv completely? +

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

import_market_csv 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.