kv_del

THE RISK

Critical Risk

Why kv_del needs a policy

This tool deletes stored key-value data without the ability to recover or undo the operation. Deletion is an irreversible action that destroys data. Even though the blast radius may be limited to individual key-value pairs rather than entire collections, the destructive nature of the operation and potential for cascading effects (e.g., if keys are relied upon by application logic) warrants a 'high' severity rating.

From the tool's definition 'Delete key-value pair in a space' — the tool name 'kv_del' and description explicitly indicate irreversible deletion of data.

Documented attack patterns abuse exactly the kind of access kv_del gives an agent:

POLICY

How to control kv_del

PolicyLayer is an MCP gateway — it sits between your AI agents and Codehooks Io MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for kv_del:

policy.json

{
  "version": "1",
  "default": "deny",
  "hide": [
    "kv_del"
  ]
}

kv_del disappears from the agent's tool list entirely, and any attempt to call it is denied. The rest of the server keeps working.

Create a free account and register Codehooks Io MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

RESTRICT THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More Codehooks Io MCP Server tools

Destructive drop_collection Delete a collection Destructive drop_index Remove field(s) from a query index Destructive file_delete Delete a file from server Destructive remove_schema Remove JSON schema from a collection Write uncap_collection Remove cap from a collection Write add_schema Add a JSON schema to a collection. Provide the schema content as a JSON string. Write cap_collection Cap a collection Write create_collection Create a new collection

All 20 Codehooks Io MCP Server tools →

Destructive tools on other servers

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Go deeper

Critical-risk tools in Codehooks Io MCP Server → Every critical-risk tool this server exposes, in one view.
All critical-risk MCP tools → Every critical-risk tool across the catalogue, and the policy pattern that contains them.
The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Blast radius → How much damage one compromised or confused agent can do — and how to bound it.
Tool call approval → Approval gates on individual tool calls: auto-allow, prompt, or deny.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about kv_del

What does the kv_del tool do? +

Delete key-value pair in a space. It is categorised as a Destructive tool in the Codehooks Io MCP Server MCP Server, which means it can permanently delete or destroy data. Block by default and require explicit approval.

How do I enforce a policy on kv_del? +

Register the Codehooks Io MCP Server MCP server in PolicyLayer and add a rule for kv_del: 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 Codehooks Io MCP Server. Nothing to install.

What risk level is kv_del? +

kv_del is a Destructive tool with critical risk. Critical-risk tools should be blocked by default and only enabled with explicit human approval.

Can I rate-limit kv_del? +

Yes. Add a rate_limit block to the kv_del 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.

How do I block kv_del completely? +

Set action: deny in the PolicyLayer policy for kv_del. 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.

What MCP server provides kv_del? +

kv_del is provided by the Codehooks Io MCP Server MCP server (restdb/codehooks-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Codehooks Io MCP Server tool call.

Start from Codehooks Io MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →