Get list of all time machines. Returns a summarized list of time machines with key fields only. Returned fields: - id, name, description, databaseId, logDriveId, type, status, slaId, scheduleId, ownerId, dateCreated, dateModified, properties (array of {ref_id, name, value, secure, description}), ...
AI agents call list_time_machines to retrieve information from NDB MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a pure data retrieval operation with optional filtering. It has no side effects—it does not create, modify, delete, or execute any operations. The returned fields are informational only. The filtering operators (!, >, <, *) are standard read-only query mechanisms.
From the tool's definition Tool name is 'list_time_machines' and description states it 'Get list of all time machines' and 'Returns a summarized list'. The tool only retrieves and queries data with no modification, deletion, or execution capabilities.
Attacks that exploit this kind of access
Get list of all time machines. Returns a summarized list of time machines with key fields only. Returned fields: - id, name, description, databaseId, logDriveId, type, status, slaId, scheduleId, ownerId, dateCreated, dateModified, properties (array of {ref_id, name, value, secure, description}), zeroSla, slaSet, continuousRecoveryEnabled, snapshotableState Advanced Filtering: - You can use operators in value for advanced filtering: !value for negation, >value/<value for comparisons, and *value* for partial (substring) search. - Multiple filters: combine with comma-separated valueType/value pairs (e.g. valueType=. It is categorised as a Read tool in the NDB MCP Server MCP Server, which means it retrieves data without modifying state.
Register the NDB MCP Server MCP server in PolicyLayer and add a rule for list_time_machines: 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 NDB MCP Server. Nothing to install.
list_time_machines 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_time_machines 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_time_machines. 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_time_machines is provided by the NDB MCP Server MCP server (rouxton/ndb-mcp-server). 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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