supply_yei_asset · SEI MCP Server V2 MCP: Risk & Policy

WHAT IT DOES

What supply_yei_asset does on SEI MCP Server V2

AI agents use supply_yei_asset to create or update resources in SEI MCP Server V2 — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your SEI MCP Server V2 environment.

WHY IT NEEDS A POLICY

Why supply_yei_asset needs a policy

This tool deposits/locks tokens into a DeFi lending pool. It modifies blockchain state by transferring user assets into a smart contract. While reversible in principle (tokens can be withdrawn), it commits user funds to an external protocol, making it a high-severity Write operation.

From the tool's definition Supply (deposit) an ERC20 token into the Yei Finance pool to earn interest.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

supply_yei_asset Rate-limited

supply_yei_asset 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": {
    "supply_yei_asset": {
      "limits": [
        {
          "counter": "supply_yei_asset_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 SEI MCP Server V2, so you can run agents against it safely.

FAQ

Questions about supply_yei_asset

What does the supply_yei_asset tool do? +

Supply (deposit) an ERC20 token into the Yei Finance pool to earn interest. It is categorised as a Write tool in the SEI MCP Server V2 MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on supply_yei_asset? +

Register the SEI MCP Server V2 MCP server in PolicyLayer and add a rule for supply_yei_asset: 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 SEI MCP Server V2. Nothing to install.

What risk level is supply_yei_asset? +

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

Can I rate-limit supply_yei_asset? +

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

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

supply_yei_asset is provided by the SEI MCP Server V2 MCP server (testinguser1111111/sei-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.