Get market statistics for all trading pairs (24h data)
AI agents call alex_get_all_tickers to retrieve information from Stacks AI 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 data (tickers and 24-hour statistics) for trading pairs without modifying any state, executing operations, or committing financial transactions. It is a pure read operation with minimal security risk, as exposure of market data does not enable unauthorized actions. Even in a misuse scenario, an AI agent using this tool can only query existing public market information.
From the tool's definition Tool name 'alex_get_all_tickers' and description 'Get market statistics for all trading pairs (24h data)' indicate a data retrieval operation. The verb 'get' and context of retrieving historical market statistics confirm no side effects or state modification.
Attacks that exploit this kind of access
Get market statistics for all trading pairs (24h data). It is categorised as a Read tool in the Stacks AI MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Stacks AI MCP Server MCP server in PolicyLayer and add a rule for alex_get_all_tickers: 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 Stacks AI MCP Server. Nothing to install.
alex_get_all_tickers 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 alex_get_all_tickers 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 alex_get_all_tickers. 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.
alex_get_all_tickers is provided by the Stacks AI MCP Server MCP server (stack-ai-mcp/stacks-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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