Get CEX price from Coinbase Exchange (NOT onchain DEX price)
AI agents call get_token_price to retrieve information from BaseQL 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 historical or current price information from a centralized exchange (Coinbase). It is a pure read operation with no side effects, state changes, or ability to execute code or trigger external operations. While it accesses financial data, it does not move money, create financial obligations, or execute trades—it only fetches publicly available pricing information.
From the tool's definition Tool name 'get_token_price' and description 'Get CEX price from Coinbase Exchange' indicate a retrieval operation that queries price data without modifying, executing, or deleting anything.
Attacks that exploit this kind of access
Get CEX price from Coinbase Exchange (NOT onchain DEX price). It is categorised as a Read tool in the BaseQL MCP Server MCP Server, which means it retrieves data without modifying state.
Register the BaseQL MCP Server MCP server in PolicyLayer and add a rule for get_token_price: 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 BaseQL MCP Server. Nothing to install.
get_token_price 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_token_price 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_token_price. 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_token_price is provided by the BaseQL MCP Server MCP server (jnix2007/baseql-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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