Register a new domain with WHOIS contact info and Stripe billing. The domain cost is charged to the user's active subscription. Free domain if plan includes free_domain_annual + annual billing + first domain. Requires: API key with write scope. Args: domain: Full domain name (e.g. "example.ca", "...
Risk signalsHigh parameter count (12 properties)
Part of the BorealHost server.
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AI agents use register_domain to create or modify resources in BorealHost. 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 register_domain 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 BorealHost.
Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.
{
"version": "1",
"default": "deny",
"tools": {
"register_domain": {
"limits": [
{
"counter": "register_domain_rate",
"window": "minute",
"max": 30,
"scope": "grant"
}
]
}
}
}See the full BorealHost policy for all 95 tools.
These attack patterns abuse exactly the kind of access register_domain 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.
Register a new domain with WHOIS contact info and Stripe billing. The domain cost is charged to the user's active subscription. Free domain if plan includes free_domain_annual + annual billing + first domain. Requires: API key with write scope. Args: domain: Full domain name (e.g. "example.ca", "mybusiness.com") first_name: Registrant first name last_name: Registrant last name email: Registrant email address phone: Phone number in E.164 format: "+1.5145551234" address1: Street address (e.g. "123 Rue Principale") city: City (e.g. "Montreal") state: Province/state code (e.g. "QC", "ON", "BC") postal_code: Postal/ZIP code (e.g. "H2X 1Y4") country: ISO 3166-1 alpha-2 country code (default: "CA") period: Registration period in years (1–10, default: 1) ca_legal_type: Required for .ca domains. CIRA legal types: "CCO" (Canadian citizen), "RES" (permanent resident), "CCT" (corporation), "GOV" (government), "EDU" (education), "ASS" (association), "HOP" (hospital), "PRT" (partnership), "TDM" (trademark), "TRD" (trade union), "PLT" (political party), "LAM" (library/archive/museum), "MAJ" (Her Majesty), "INB" (Indian band), "ABO" (Aboriginal peoples), "LGR" (legal representative) Returns: {"domain": "example.ca", "status": "registered", "expires_at": "iso8601", "message": "Domain registered successfully"} Errors: VALIDATION_ERROR: Missing required fields, invalid phone format, missing ca_legal_type for .ca domains NOT_FOUND: Domain not available (already registered by someone else). It is categorised as a Write tool in the BorealHost MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the BorealHost MCP server in PolicyLayer and add a rule for register_domain: 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 BorealHost. Nothing to install.
register_domain 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 register_domain 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 register_domain. 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.
register_domain is provided by the BorealHost MCP server (pypi:borealhost-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 95 BorealHost tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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