Date range, market counts and per-day gaps of the historical dataset.
AI agents call data_coverage to retrieve information from Polymarket BTC Backtester MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool only provides information about data coverage (date ranges, counts, gaps) without creating, modifying, executing, or deleting anything. It is a straightforward read/query operation with minimal blast radius if misused by an AI agent.
From the tool's definition Tool returns metadata about historical dataset: 'Date range, market counts and per-day gaps'. This is purely informational retrieval with no side effects—it queries and reports statistics about available data.
Attacks that exploit this kind of access
Date range, market counts and per-day gaps of the historical dataset. It is categorised as a Read tool in the Polymarket BTC Backtester MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Polymarket BTC Backtester MCP Server MCP server in PolicyLayer and add a rule for data_coverage: 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 BTC Backtester MCP Server. Nothing to install.
data_coverage 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 data_coverage 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 data_coverage. 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.
data_coverage is provided by the Polymarket BTC Backtester MCP Server MCP server (xin10ylop/polymarket-backtest-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
data_coverage is one line of Polymarket BTC Backtester MCP Server'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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