AI agents call list_checkpoints to retrieve information from Novyx without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves checkpoint data associated with a mission without modifying, deleting, or executing anything. It is a passive query operation with minimal blast radius if misused by an AI agent—the worst outcome would be information disclosure about mission checkpoints. The governance context (Novyx platform) further suggests this is part of an audit/status tracking system rather than an action-performing tool.
From the tool's definition Tool name 'list_checkpoints' and description 'List checkpoints for a mission' indicate a retrieval/query operation with no side effects. The verb 'list' is a standard Read operation pattern.
Documented attack patterns abuse exactly the kind of access list_checkpoints gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Novyx, and nothing reaches the server without passing your rules. This is the rule we recommend for list_checkpoints:
{
"version": "1",
"default": "deny",
"tools": {
"list_checkpoints": {}
}
}list_checkpoints is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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List checkpoints for a mission. It is categorised as a Read tool in the Novyx MCP Server, which means it retrieves data without modifying state.
Register the Novyx MCP server in PolicyLayer and add a rule for list_checkpoints: 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 Novyx. Nothing to install.
list_checkpoints 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 list_checkpoints 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 list_checkpoints. 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.
list_checkpoints is provided by the Novyx MCP server (novyxlabs/novyx-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 120 Novyx tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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120 Novyx tools catalogued and risk-classified — across an index of 42,500+ MCP servers.