List all databases in the CosmosDB account. Use this to discover available databases before querying containers. Returns database IDs, timestamps, and ETags.
AI agents call mcp_list_databases to retrieve information from Mcpcosmosdb without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves metadata about existing databases without creating, modifying, deleting, or executing any operations. It is a discovery/listing operation with no side effects, fitting the Read category. Severity is low because exposure of database metadata alone does not create significant risk; it enables reconnaissance but not direct data access or manipulation.
From the tool's definition Tool description states it 'List all databases' and 'Returns database IDs, timestamps, and ETags' — purely informational retrieval with no modification or execution.
Attacks that exploit this kind of access
List all databases in the CosmosDB account. Use this to discover available databases before querying containers. Returns database IDs, timestamps, and ETags. It is categorised as a Read tool in the Mcpcosmosdb MCP Server, which means it retrieves data without modifying state.
Register the Mcpcosmosdb MCP server in PolicyLayer and add a rule for mcp_list_databases: 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 Mcpcosmosdb. Nothing to install.
mcp_list_databases 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 mcp_list_databases 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 mcp_list_databases. 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.
mcp_list_databases is provided by the Mcpcosmosdb MCP server (mcpcosmosdb). 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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