identity_set_token_vault_cmk

WHAT IT DOES

What identity_set_token_vault_cmk does on AWS IoT SiteWise MCP Server

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

WHY IT NEEDS A POLICY

Why identity_set_token_vault_cmk needs a policy

The tool name 'identity_set_token_vault_cmk' suggests setting or modifying a token vault's CMK association, which would be a reversible configuration change (Write category). However, the empty description creates substantial uncertainty. The involvement of identity, token vault, and CMK handling elevates severity to high due to potential credential/key management implications.

From the tool's definition Tool name includes 'set' and 'token_vault', suggesting it modifies token vault configuration or credentials. The CMK (Customer Master Key) reference indicates interaction with AWS KMS encryption keys.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

identity_set_token_vault_cmk Rate-limited

identity_set_token_vault_cmk 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_set_token_vault_cmk": {
      "limits": [
        {
          "counter": "identity_set_token_vault_cmk_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 AWS IoT SiteWise MCP Server, so you can run agents against it safely.

FAQ

Questions about identity_set_token_vault_cmk

What does the identity_set_token_vault_cmk tool do? +

identity_set_token_vault_cmk. It is categorised as a Write tool in the AWS IoT SiteWise MCP Server 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_set_token_vault_cmk? +

Register the AWS IoT SiteWise MCP Server MCP server in PolicyLayer and add a rule for identity_set_token_vault_cmk: 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 AWS IoT SiteWise MCP Server. Nothing to install.

What risk level is identity_set_token_vault_cmk? +

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

Can I rate-limit identity_set_token_vault_cmk? +

Yes. Add a rate_limit block to the identity_set_token_vault_cmk 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_set_token_vault_cmk completely? +

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

identity_set_token_vault_cmk is provided by the AWS IoT SiteWise MCP Server MCP server (awslabs.aws-iot-sitewise-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.