AI agents call identity_set_token_vault_cmk as a supporting operation in Amazon EKS MCP Server workflows.
With an empty description, the exact behavior cannot be determined. The name hints at configuring encryption keys (CMK = Customer Master Key) for a token vault in an identity context, which would typically be a Write/configuration operation. However, without confirmation, confidence is low and category defaults to Other.
From the tool's definition Tool name 'identity_set_token_vault_cmk' and empty description provide no behavioral detail. The name suggests setting a Customer Master Key (CMK) for a token vault, which could be a Write or Execute operation.
Documented attack patterns abuse exactly the kind of access identity_set_token_vault_cmk gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Amazon EKS MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for identity_set_token_vault_cmk:
{
"version": "1",
"default": "deny",
"tools": {
"identity_set_token_vault_cmk": {
"limits": [
{
"counter": "identity_set_token_vault_cmk_rate",
"window": "minute",
"max": 60,
"scope": "grant"
}
]
}
}
} identity_set_token_vault_cmk gets a rate cap, and everything else on the server is denied unless you say otherwise.
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identity_set_token_vault_cmk. It is categorised as a Other tool in the Amazon EKS MCP Server MCP Server, which means it performs auxiliary operations.
Register the Amazon EKS 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 Amazon EKS MCP Server. Nothing to install.
identity_set_token_vault_cmk is a Other tool with low risk. Read-only tools are generally safe to allow by default.
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.
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.
identity_set_token_vault_cmk is provided by the Amazon EKS MCP Server MCP server (awslabs.eks-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Amazon EKS MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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805 Amazon EKS MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.