Get top position holders for a market. Note: Requires authenticated access.
AI agents call get_market_holders to retrieve information from Polymarket MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves market holder information without creating, modifying, deleting, or executing any operations. It is a passive data query on an authenticated endpoint. While it operates in a financial context (Polymarket), it does not move money, execute trades, or commit financial obligations—it only reads position data. The authentication requirement reflects access control, not risk elevation.
From the tool's definition Tool name 'get_market_holders' and description 'Get top position holders for a market' indicate data retrieval with no modification. The 'get' prefix and verb 'get' are characteristic of Read operations.
Attacks that exploit this kind of access
Get top position holders for a market. Note: Requires authenticated access. It is categorised as a Read tool in the Polymarket MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Polymarket MCP Server MCP server in PolicyLayer and add a rule for get_market_holders: 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 Polymarket MCP Server. Nothing to install.
get_market_holders 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_market_holders 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_market_holders. 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_market_holders is provided by the Polymarket MCP Server MCP server (nancheng582-jpg/polymarket-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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