offer-create

THE RISK

Critical Risk

Why offer-create needs a policy

Creating an offer/order on the XRP Ledger DEX constitutes a financial commitment to trade assets (XRP or tokens). This directly involves financial transactions and can result in immediate or deferred asset exchanges. Misuse could result in unfavorable trades, loss of funds, or unintended financial obligations, warranting critical severity.

From the tool's definition "Create an Offer (order) in the XRP Ledger" - creates a financial order/trade on a decentralized exchange, committing to exchange assets at specified terms

Documented attack patterns abuse exactly the kind of access offer-create gives an agent:

POLICY

How to control offer-create

PolicyLayer is an MCP gateway — it sits between your AI agents and Xrpl mcp, and nothing reaches the server without passing your rules. This is the rule we recommend for offer-create:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "offer-create": {
      "deny_if": [
        {
          "conditions": [],
          "on_deny": "Requires human approval."
        }
      ]
    }
  }
}

Any call to offer-create is blocked until a human approves it. The rest of the server keeps working.

Create a free account and register Xrpl mcp — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

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EXPLORE

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Critical-risk tools in Xrpl mcp → Every critical-risk tool this server exposes, in one view.
All critical-risk MCP tools → Every critical-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Human-in-the-loop → When a tool call should wait for a person — and when policy can decide alone.
Tool call approval → Approval gates on individual tool calls: auto-allow, prompt, or deny.
How to Add Spending Controls to Any MCP Agent →
Rate Limiting MCP Tool Calls: A Practical Guide →

FAQ

Questions about offer-create

What does the offer-create tool do? +

Create an Offer (order) in the XRP Ledger. It is categorised as a Financial tool in the Xrpl mcp MCP Server, which means it involves financial transactions. Block by default and require explicit approval.

How do I enforce a policy on offer-create? +

Register the Xrpl MCP server in PolicyLayer and add a rule for offer-create: 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 Xrpl mcp. Nothing to install.

What risk level is offer-create? +

offer-create is a Financial tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit offer-create? +

Yes. Add a rate_limit block to the offer-create 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 offer-create completely? +

Set action: deny in the PolicyLayer policy for offer-create. 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 offer-create? +

offer-create is provided by the Xrpl MCP server (romthpt/mcp-xrpl). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Xrpl mcp tool call.

Start from Xrpl mcp, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →