AI agents call identity_set_token_vault_cmk as a supporting operation in Amazon ECS MCP Server workflows.
With no description available, classification is uncertain. The name suggests configuring encryption (CMK = Customer Managed Key) for a token vault, which would typically be a Write/configuration operation. However, given the ambiguity, confidence is low. Severity is medium because misconfiguration of encryption keys could have security implications.
From the tool's definition Tool description is empty and uninformative; tool name 'identity_set_token_vault_cmk' suggests setting a customer-managed key (CMK) for a token vault, which could be a Write or security configuration 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 ECS 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 ECS MCP Server MCP Server, which means it performs auxiliary operations.
Register the Amazon ECS 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 ECS 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 ECS MCP Server MCP server (awslabs.ecs-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Amazon ECS 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 ECS MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.