update_secret · Infisical MCP: Risk & Policy

WHAT IT DOES

What update_secret does on Infisical MCP

AI agents use update_secret to create or update resources in Infisical MCP — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Infisical MCP environment.

WHY IT NEEDS A POLICY

Why update_secret needs a policy

The tool modifies existing secrets reversibly (update/rename operations are not irreversible deletions), placing it in the Write category rather than Destructive. However, severity is high because secrets are sensitive data—misuse could compromise authentication credentials, API keys, or other critical infrastructure secrets.

From the tool's definition Tool name 'update_secret' and description 'Update or rename a static secret' clearly indicate modification of existing data. The Infisical context involves secrets management, making unauthorized modification a high-severity concern.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

update_secret Rate-limited

update_secret stays usable, but capped — an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "update_secret": {
      "limits": [
        {
          "counter": "update_secret_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Infisical MCP, so you can run agents against it safely.

FAQ

Questions about update_secret

What does the update_secret tool do? +

Update or rename a static secret. It is categorised as a Write tool in the Infisical MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on update_secret? +

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

What risk level is update_secret? +

update_secret is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit update_secret? +

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

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

update_secret is provided by the Infisical MCP server (plgonzalezrx8/infisicalmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.