AI agents call get_open_interest to retrieve information from Coin without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Open interest is a read-only market metric queried for analysis. No side effects, data modification, code execution, or financial transactions occur. Low severity due to limited blast radius—misuse would only retrieve market data. Confidence is moderate (0.7) due to empty description, but sibling tool patterns and naming strongly suggest a Read operation.
From the tool's definition Tool name 'get_open_interest' indicates retrieval of market data (open interest metrics). Description is empty, but context from sibling tools (compare_funding_rates, compute_indicators, get_aggregated_ohlc, get_coin_details, get_coin_tickers) confirms this…
Attacks that exploit this kind of access
get_open_interest. It is categorised as a Read tool in the Coin MCP Server, which means it retrieves data without modifying state.
Register the Coin MCP server in PolicyLayer and add a rule for get_open_interest: 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 Coin. Nothing to install.
get_open_interest 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_open_interest 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_open_interest. 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_open_interest is provided by the Coin MCP server (sweetcornna/coin-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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