prepare-execute-contract · Osmosis MCP Server MCP

WHAT IT DOES

What prepare-execute-contract does on Osmosis MCP Server

AI agents invoke prepare-execute-contract to trigger actions in Osmosis MCP Server. What it does depends on the arguments the agent supplies, and its effects often reach beyond the immediate call — builds kicked off, notifications sent, workflows started.

WHY IT NEEDS A POLICY

Why prepare-execute-contract needs a policy

This tool triggers external contract execution on a blockchain, which is irreversible and has real financial consequences (gas fees, token transfers, liquidity pool modifications).

From the tool's definition Tool name 'prepare-execute-contract' and description 'Prepares a transaction to execute a contract' indicates execution of contract code on the Osmosis blockchain.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

prepare-execute-contract Rate-limited

prepare-execute-contract stays usable, but rate-capped — a runaway agent can't fire it dozens of times a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "prepare-execute-contract": {
      "limits": [
        {
          "counter": "prepare-execute-contract_rate",
          "window": "minute",
          "max": 10,
          "scope": "grant"
        }
      ]
    }
  }
}

RATE-LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Osmosis MCP Server, so you can run agents against it safely.

FAQ

Questions about prepare-execute-contract

What does the prepare-execute-contract tool do? +

Prepares a transaction to execute a contract. It is categorised as a Execute tool in the Osmosis MCP Server MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.

How do I enforce a policy on prepare-execute-contract? +

Register the Osmosis MCP Server MCP server in PolicyLayer and add a rule for prepare-execute-contract: 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 Osmosis MCP Server. Nothing to install.

What risk level is prepare-execute-contract? +

prepare-execute-contract is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.

Can I rate-limit prepare-execute-contract? +

Yes. Add a rate_limit block to the prepare-execute-contract 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 prepare-execute-contract completely? +

Set action: deny in the PolicyLayer policy for prepare-execute-contract. 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 prepare-execute-contract? +

prepare-execute-contract is provided by the Osmosis MCP Server MCP server (myronkoch-dev/mcp-osmosis). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.