finance_forex_convert · Data Apis MCP: Risk & Policy

WHAT IT DOES

What finance_forex_convert does on Data Apis

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

WHY IT NEEDS A POLICY

Why finance_forex_convert needs a policy

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

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

finance_forex_convert Rate-limited

finance_forex_convert 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": {
    "finance_forex_convert": {
      "limits": [
        {
          "counter": "finance_forex_convert_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 Data Apis, so you can run agents against it safely.

FAQ

Questions about finance_forex_convert

What does the finance_forex_convert tool do? +

Convert an amount from one currency to another using live forex rates. Costs $0.02 USDC per request via x402 on Base. It is categorised as a Write tool in the Data Apis MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on finance_forex_convert? +

Register the Data Apis MCP server in PolicyLayer and add a rule for finance_forex_convert: 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 Data Apis. Nothing to install.

What risk level is finance_forex_convert? +

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

Can I rate-limit finance_forex_convert? +

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

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

finance_forex_convert is provided by the Data Apis MCP server (yantrix-ai/x402-apis-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.