amm-deposit

THE RISK

Critical Risk

Why amm-deposit needs a policy

Depositing assets into an AMM constitutes a financial transaction that commits cryptocurrency or tokens, creating financial obligations and fund transfers on the blockchain. This is categorized as Financial rather than Write because it involves actual asset movement rather than mere data creation.

From the tool's definition Tool description states 'Deposit assets into an existing Automated Market Maker (AMM) on the XRP Ledger'. The term 'deposit assets' combined with server context describing XRP Ledger transaction submission indicates movement of cryptocurrency or tokens.

Documented attack patterns abuse exactly the kind of access amm-deposit gives an agent:

POLICY

How to control amm-deposit

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 amm-deposit:

policy.json

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

Any call to amm-deposit 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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Go deeper

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 amm-deposit

What does the amm-deposit tool do? +

Deposit assets into an existing Automated Market Maker (AMM) on 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 amm-deposit? +

Register the Xrpl MCP server in PolicyLayer and add a rule for amm-deposit: 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 amm-deposit? +

amm-deposit 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 amm-deposit? +

Yes. Add a rate_limit block to the amm-deposit 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 amm-deposit completely? +

Set action: deny in the PolicyLayer policy for amm-deposit. 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 amm-deposit? +

amm-deposit 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 →