Get spot coin information。Parameter：coin - Coin name\nResponse Parameters \n
AI agents call getCoinInfo 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.
This tool retrieves cryptocurrency spot market information from the Bitget API. It takes a coin name as input and returns data about that coin. As a data retrieval operation with no capability to modify, delete, or execute code, it falls squarely into the Read category. The severity is low because retrieving public market data poses minimal risk even if misused by an AI agent.
From the tool's definition The tool name is 'getCoinInfo' and the description states 'Get spot coin information' with a parameter for coin name. This is a retrieval operation with no mention of modifications, deletions, or side effects.
Documented attack patterns abuse exactly the kind of access getCoinInfo gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Coin, and nothing reaches the server without passing your rules. This is the rule we recommend for getCoinInfo:
{
"version": "1",
"default": "deny",
"tools": {
"getCoinInfo": {}
}
}getCoinInfo is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get spot coin information。Parameter：coin - Coin name\nResponse Parameters \n. 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 getCoinInfo: 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.
getCoinInfo 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 getCoinInfo 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 getCoinInfo. 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.
getCoinInfo is provided by the Coin MCP server (pwh-pwh/coin-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Coin, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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3 Coin tools catalogued and risk-classified — across an index of 43,000+ MCP servers.