Get current price for specific token by contract address
AI agents call velar_get_price_by_contract 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 only retrieves current price information for a token based on its contract address. It has no side effects, does not execute trades, transfer funds, or modify any state. It is a pure data retrieval operation, fitting the Read category. Severity is low because misuse would only expose market data already publicly available on-chain, with no financial, destructive, or operational consequences.
From the tool's definition Tool description states "Get current price for specific token by contract address" — a query operation that retrieves pricing data without modification or execution of transactions.
Attacks that exploit this kind of access
Get current price for specific token by contract address. 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 velar_get_price_by_contract: 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.
velar_get_price_by_contract 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 velar_get_price_by_contract 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 velar_get_price_by_contract. 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.
velar_get_price_by_contract 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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Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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