AI agents call smart_suggest to retrieve information from Project Tessera without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a read-only tool that queries the vector store to suggest relevant topics or questions to the user. It has no side effects, does not execute code or commands, does not modify data, and does not involve financial transactions. The blast radius of misuse is minimal—an attacker could only receive irrelevant or unwanted suggestions, which is a low-severity information disclosure or nuisance at worst.
From the tool's definition Tool description states 'Get personalized query suggestions' — this retrieves and returns suggestions based on indexed data without modifying, deleting, or executing external operations.
Documented attack patterns abuse exactly the kind of access smart_suggest gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Project Tessera, and nothing reaches the server without passing your rules. This is the rule we recommend for smart_suggest:
{
"version": "1",
"default": "deny",
"tools": {
"smart_suggest": {}
}
}smart_suggest is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get personalized query suggestions. It is categorised as a Read tool in the Project Tessera MCP Server, which means it retrieves data without modifying state.
Register the Project Tessera MCP server in PolicyLayer and add a rule for smart_suggest: 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 Project Tessera. Nothing to install.
smart_suggest 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 smart_suggest 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 smart_suggest. 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.
smart_suggest is provided by the Project Tessera MCP server (besslframework-stack/project-tessera). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Project Tessera, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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43 Project Tessera tools catalogued and risk-classified — across an index of 43,000+ MCP servers.