clear_vectara_api_key

THE RISK

Critical Risk

Why clear_vectara_api_key needs a policy

This tool irreversibly removes the stored API key from server memory. While not deleting user data, clearing an API key is a destructive action that cannot be undone without re-entering the key manually, and would break all Vectara functionality on the server until re-configured. The blast radius is medium — an AI agent misusing this would disable all Vectara operations for the session.

From the tool's definition Clear the stored Vectara API key from server memory

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

POLICY

How to control clear_vectara_api_key

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

policy.json

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

clear_vectara_api_key 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 Vectara 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 Vectara MCP server tools

Write setup_vectara_api_key Configure and validate the Vectara API key for the session. Read ask_vectara ask_vectara Other correct_hallucinations correct_hallucinations Read eval_factual_consistency eval_factual_consistency Read search_vectara search_vectara

All 6 Vectara MCP server tools →

Destructive tools on other servers

Android Forensics ADB MCP Server create_full_backup 0xarchive web3_revoke_key Frida Game Hacking MCP clear_scan cPanel MCP Server clear_spam_box

Go deeper

Critical-risk tools in Vectara 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 clear_vectara_api_key

What does the clear_vectara_api_key tool do? +

Clear the stored Vectara API key from server memory. It is categorised as a Destructive tool in the Vectara 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 clear_vectara_api_key? +

Register the Vectara MCP server MCP server in PolicyLayer and add a rule for clear_vectara_api_key: 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 Vectara MCP server. Nothing to install.

What risk level is clear_vectara_api_key? +

clear_vectara_api_key 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 clear_vectara_api_key? +

Yes. Add a rate_limit block to the clear_vectara_api_key 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 clear_vectara_api_key completely? +

Set action: deny in the PolicyLayer policy for clear_vectara_api_key. 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 clear_vectara_api_key? +

clear_vectara_api_key is provided by the Vectara MCP server MCP server (vectara/vectara-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every Vectara MCP server tool call.

Start from Vectara 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 →