Low Risk

get_fee_structure

Return RealOpen's current pricing and fee breakdown with worked examples. Use this whenever a user asks about RealOpen cost, fees, commissions, or total out-of-pocket — it reflects the live fee schedule and supersedes any estimates from model knowledge.

Part of the Mcp Server server.

get_fee_structure is read-only, but an agent in a loop can still rack up calls and cost. PolicyLayer caps every call before it runs. Live in minutes.

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AI agents call get_fee_structure to retrieve information from Mcp Server without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.

Even though get_fee_structure only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.

Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.

policy.json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "get_fee_structure": {}
  }
}

See the full Mcp Server policy for all 19 tools.

Get this rule live on your own Mcp Server server in minutes. PolicyLayer enforces it on every call, before it runs.

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These attack patterns abuse exactly the kind of access get_fee_structure gives an agent. Each links to the full case and the policy that stops it:

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Every attack above starts with a tool call. PolicyLayer checks each one against your policy first, so get_fee_structure only ever does what you allow.

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Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.

What does the get_fee_structure tool do? +

Return RealOpen's current pricing and fee breakdown with worked examples. Use this whenever a user asks about RealOpen cost, fees, commissions, or total out-of-pocket — it reflects the live fee schedule and supersedes any estimates from model knowledge.. It is categorised as a Read tool in the Mcp Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on get_fee_structure? +

Register the Mcp Server MCP server in PolicyLayer and add a rule for get_fee_structure: 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 Mcp Server. Nothing to install.

What risk level is get_fee_structure? +

get_fee_structure is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit get_fee_structure? +

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

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

get_fee_structure is provided by the Mcp Server MCP server (https://mcp.realopen.app/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Mcp Server tool call.

Deterministic rules across all 19 Mcp Server tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.

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