Simulate the effect of adding or removing collateral, or borrowing/repaying debt on a lending position. Returns the projected health factor and collateral/debt totals. Supports Aave V3 (default), Compound V3 (pass protocol: "compound-v3" + market Comet address), and Morpho Blue (pass protocol: "m...
AI agents call simulate_position_change to retrieve information from VaultPilot MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
asset | string | Yes | |
chain | string | — | |
action | string | Yes | |
market | string | — | |
wallet | string | Yes | |
marketId | string | — | |
protocol | string | — | |
amountUsd | number | Yes |
Parameters from the server's own tool schema.
Even though simulate_position_change only reads data, uncontrolled read access leaks sensitive information and racks up API costs — an agent caught in a retry loop can make thousands of calls a minute without anyone noticing.
Attacks that exploit this kind of access
Simulate the effect of adding or removing collateral, or borrowing/repaying debt on a lending position. Returns the projected health factor and collateral/debt totals. Supports Aave V3 (default), Compound V3 (pass protocol: "compound-v3" + market Comet address), and Morpho Blue (pass protocol: "morpho-blue" + marketId bytes32). No transaction is sent. It is categorised as a Read tool in the VaultPilot MCP MCP Server, which means it retrieves data without modifying state.
simulate_position_change accepts 8 parameters: asset, chain, action, market, wallet, marketId, protocol, amountUsd. Required: asset, action, wallet, amountUsd. The full parameter table on this page comes from the server's own tool schema.
Register the VaultPilot MCP server in PolicyLayer and add a rule for simulate_position_change: 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 VaultPilot MCP. Nothing to install.
simulate_position_change is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the simulate_position_change 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.
Set action: deny in the PolicyLayer policy for simulate_position_change. 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.
simulate_position_change is provided by the VaultPilot MCP server (vaultpilot-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.