List all Workers KV namespaces in the account. KV is Cloudflare
AI agents call list_kv_namespaces to retrieve information from Cloudflare MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns metadata about KV namespaces without creating, modifying, deleting, or executing operations. It is a pure read operation with minimal security impact—listing namespaces exposes organizational structure but does not alter state or cause direct harm. Low severity reflects the informational nature of the action.
From the tool's definition Tool name 'list_kv_namespaces' and description 'List all Workers KV namespaces' indicate a retrieval operation with no modification or deletion of data.
Attacks that exploit this kind of access
List all Workers KV namespaces in the account. KV is Cloudflare. It is categorised as a Read tool in the Cloudflare MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Cloudflare MCP Server MCP server in PolicyLayer and add a rule for list_kv_namespaces: 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 Cloudflare MCP Server. Nothing to install.
list_kv_namespaces 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_kv_namespaces 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_kv_namespaces. 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_kv_namespaces is provided by the Cloudflare MCP Server MCP server (ry-ops/cloudflare-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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