AI agents call aevo_get_index_history to retrieve information from Aevo-MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Despite the empty description, the naming convention 'get_*' combined with similar sibling tools (aevo_get_account, aevo_get_expiries, aevo_get_funding_history) strongly indicates this retrieves historical index data without side effects. No modification, deletion, or financial action is implied.
From the tool's definition Tool name 'aevo_get_index_history' indicates data retrieval; sibling tools include get_account, get_expiries, get_funding_history suggesting read-only query operations on the Aevo platform.
Attacks that exploit this kind of access
aevo_get_index_history. It is categorised as a Read tool in the Aevo-MCP MCP Server, which means it retrieves data without modifying state.
Register the Aevo- MCP server in PolicyLayer and add a rule for aevo_get_index_history: 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 Aevo-MCP. Nothing to install.
aevo_get_index_history 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 aevo_get_index_history 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 aevo_get_index_history. 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.
aevo_get_index_history is provided by the Aevo- MCP server (ribbon-finance/aevo-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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