identity-entity-alias-update

WHAT IT DOES

What identity-entity-alias-update does on Vault MCP Server (mschuchard)

AI agents use identity-entity-alias-update to create or update resources in Vault MCP Server (mschuchard) — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Vault MCP Server (mschuchard) environment.

WHY IT NEEDS A POLICY

Why identity-entity-alias-update needs a policy

Identity entity aliases in HashiCorp Vault control authentication mappings and user identity resolution. Updating aliases can alter how users authenticate and access secrets, potentially granting unauthorized access or disrupting legitimate authentication flows. While reversible (Write rather than Destructive), the impact is high due to Vault's central role in secrets management.

From the tool's definition Tool name 'identity-entity-alias-update' indicates modification of identity entity aliases in Vault. The 'update' operation is inherently a Write action.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

identity-entity-alias-update Rate-limited

identity-entity-alias-update 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": {
    "identity-entity-alias-update": {
      "limits": [
        {
          "counter": "identity-entity-alias-update_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 Vault MCP Server (mschuchard), so you can run agents against it safely.

FAQ

Questions about identity-entity-alias-update

What does the identity-entity-alias-update tool do? +

identity-entity-alias-update. It is categorised as a Write tool in the Vault MCP Server (mschuchard) MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on identity-entity-alias-update? +

Register the Vault MCP Server (mschuchard) MCP server in PolicyLayer and add a rule for identity-entity-alias-update: 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 Vault MCP Server (mschuchard). Nothing to install.

What risk level is identity-entity-alias-update? +

identity-entity-alias-update is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit identity-entity-alias-update? +

Yes. Add a rate_limit block to the identity-entity-alias-update 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 identity-entity-alias-update completely? +

Set action: deny in the PolicyLayer policy for identity-entity-alias-update. 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 identity-entity-alias-update? +

identity-entity-alias-update is provided by the Vault MCP Server (mschuchard) MCP server (mschuchard/vault-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.