All open positions across all markets in the configured sub-account.
AI agents call get_positions to retrieve information from Lighter MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and displays data about existing positions without creating, modifying, deleting, or executing any trades or state changes. It has minimal blast radius—the only risk is information disclosure if an attacker gains access, but no financial loss or irreversible action can occur through this tool alone. Classification as Read is appropriate.
From the tool's definition Tool name 'get_positions' and description 'All open positions across all markets in the configured sub-account' indicate a query/retrieval operation with no side effects.
Attacks that exploit this kind of access
All open positions across all markets in the configured sub-account. It is categorised as a Read tool in the Lighter MCP MCP Server, which means it retrieves data without modifying state.
Register the Lighter MCP server in PolicyLayer and add a rule for get_positions: 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 Lighter MCP. Nothing to install.
get_positions 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 get_positions 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 get_positions. 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.
get_positions is provided by the Lighter MCP server (0xdegenmo/lighter-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
get_positions is one line of Lighter's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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