Bulk create subnames under a parent ENS name. Designed for agent fleet deployment — create identities like agent001.company.eth, agent002.company.eth, etc. Each subname can have its own owner and records (addresses, text records). Uses the ENS NameWrapper for subname creation. Returns complete tr...
Part of the Name Whisper server.
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AI agents use mint_subnames to create or modify resources in Name Whisper. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.
Without a policy, an AI agent could call mint_subnames repeatedly, creating or modifying resources faster than any human could review. PolicyLayer's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach Name Whisper.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"mint_subnames": {
"limits": [
{
"counter": "mint_subnames_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full Name Whisper policy for all 34 tools.
These attack patterns abuse exactly the kind of access mint_subnames gives an agent. Each links to the full case and the policy that stops it:
Other write tools across the catalogue. The same approach applies to each: rate-limit and validate the arguments.
Bulk create subnames under a parent ENS name. Designed for agent fleet deployment — create identities like agent001.company.eth, agent002.company.eth, etc. Each subname can have its own owner and records (addresses, text records). Uses the ENS NameWrapper for subname creation. Returns complete transaction recipes (contract address, encoded calldata, gas estimates) for each subname. Your wallet signs and broadcasts the transactions. Subnames are free to create — only gas costs apply.. It is categorised as a Write tool in the Name Whisper MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the Name Whisper MCP server in PolicyLayer and add a rule for mint_subnames: 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 Name Whisper. Nothing to install.
mint_subnames is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the mint_subnames 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 mint_subnames. 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.
mint_subnames is provided by the Name Whisper MCP server (namewhisper/ens-tools). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 34 Name Whisper tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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