# domains.list_tlds

List or search top-level domains (TLDs) with registry metadata. Filter by substring search, availability phase, TLD category, and paginate with limit and page. limit defaults to 100 when omitted. Each result includes the TLD suffix, type, availability phase, WHOIS server, domain counts when known, registry organization details, and created/changed timestamps. availability values: general-availability (open for normal registration) or sunrise (trademark sunrise period before general availability). Cost = 2 tokens.

Agent View of the PolicyLayer registry record for `domains.list_tlds`. HTML page: https://policylayer.com/tools/io-github-vee3io-vee3/domains.list-tlds

## Facts

- Tool: `domains.list_tlds`
- Server: Vee3 (`https://mcp.vee3.io/mcp`) — https://policylayer.com/tools/io-github-vee3io-vee3.md
- Homepage: https://github.com/Vee3io/vee3
- Risk category: Read (Low risk)
- Registry record: grade F, identity unverified
- Server auth posture: open
- Server rate-limited: no
- Parameters: 5
- Recommended policy verdict: Allowed

## Parameters

| Parameter | Type | Required | Description |
| --- | --- | --- | --- |
| `page` | object | no | Page number for paginated results. |
| `limit` | object | no | Maximum number of TLDs to return. Defaults to 100 when omitted. |
| `search` | object | no | Return TLDs whose suffix contains this substring. |
| `tld_type` | object | no | Filter by TLD category: country-code, generic, generic-restricted, infrastructure, or sponsored. |
| `availability` | object | no | Filter by registration phase: general-availability (normal public registration) or sunrise (early trademark-holder period). |

Parameters from the server's own tool schema.

## Example call (MCP tools/call, JSON-RPC 2.0)

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "domains.list_tlds",
    "arguments": {}
  }
}
```

## Why domains.list_tlds is rated Low

This tool only retrieves and queries publicly available TLD registry metadata without any side effects. It performs information lookup operations comparable to the sibling tool domains.whois and domains.lookup, which are standard read operations. There is no capability to modify, create, delete, or execute any operations.

From the tool's own definition: "Tool description states 'List or search top-level domains (TLDs) with registry metadata' and retrieves information including 'TLD suffix, type, availability phase, WHOIS server, domain counts..."

## Use case

AI agents call domains.list_tlds to retrieve information from Vee3 without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

## Recommended policy (PolicyLayer)

Verdict: **Allowed**. Enforced by the PolicyLayer MCP gateway (https://policylayer.com/mcp-gateway) before a call reaches Vee3:

```json
{
  "version": "1",
  "default": "deny",
  "tools": {
    "domains.list_tlds": {}
  }
}
```

## Other tools on Vee3 (248)

- `clerk.delete_allowlist_identifier` — Destructive — https://policylayer.com/tools/io-github-vee3io-vee3/clerk.delete-allowlist-identifier.md
- `clerk.delete_api_key` — Destructive — https://policylayer.com/tools/io-github-vee3io-vee3/clerk.delete-api-key.md
- `clerk.delete_blocklist_identifier` — Destructive — https://policylayer.com/tools/io-github-vee3io-vee3/clerk.delete-blocklist-identifier.md
- `clerk.delete_domain` — Destructive — https://policylayer.com/tools/io-github-vee3io-vee3/clerk.delete-domain.md
- `clerk.delete_email_address` — Destructive — https://policylayer.com/tools/io-github-vee3io-vee3/clerk.delete-email-address.md
- `clerk.delete_enterprise_connection` — Destructive — https://policylayer.com/tools/io-github-vee3io-vee3/clerk.delete-enterprise-connection.md
- `clerk.delete_jwt_template` — Destructive — https://policylayer.com/tools/io-github-vee3io-vee3/clerk.delete-jwt-template.md
- `clerk.delete_machine` — Destructive — https://policylayer.com/tools/io-github-vee3io-vee3/clerk.delete-machine.md
- `clerk.delete_machine_scope` — Destructive — https://policylayer.com/tools/io-github-vee3io-vee3/clerk.delete-machine-scope.md
- `clerk.delete_oauth_application` — Destructive — https://policylayer.com/tools/io-github-vee3io-vee3/clerk.delete-oauth-application.md
- `clerk.delete_organization` — Destructive — https://policylayer.com/tools/io-github-vee3io-vee3/clerk.delete-organization.md
- `clerk.delete_organization_domain` — Destructive — https://policylayer.com/tools/io-github-vee3io-vee3/clerk.delete-organization-domain.md
- `clerk.delete_organization_membership` — Destructive — https://policylayer.com/tools/io-github-vee3io-vee3/clerk.delete-organization-membership.md
- `clerk.delete_organization_permission` — Destructive — https://policylayer.com/tools/io-github-vee3io-vee3/clerk.delete-organization-permission.md
- `clerk.delete_organization_role` — Destructive — https://policylayer.com/tools/io-github-vee3io-vee3/clerk.delete-organization-role.md
- `clerk.delete_phone_number` — Destructive — https://policylayer.com/tools/io-github-vee3io-vee3/clerk.delete-phone-number.md
- `clerk.delete_redirect_url` — Destructive — https://policylayer.com/tools/io-github-vee3io-vee3/clerk.delete-redirect-url.md
- `clerk.delete_svix_app` — Destructive — https://policylayer.com/tools/io-github-vee3io-vee3/clerk.delete-svix-app.md
- `clerk.delete_user` — Destructive — https://policylayer.com/tools/io-github-vee3io-vee3/clerk.delete-user.md
- `clerk.delete_user_backup_codes` — Destructive — https://policylayer.com/tools/io-github-vee3io-vee3/clerk.delete-user-backup-codes.md
- `clerk.delete_user_external_account` — Destructive — https://policylayer.com/tools/io-github-vee3io-vee3/clerk.delete-user-external-account.md
- `clerk.delete_user_passkey` — Destructive — https://policylayer.com/tools/io-github-vee3io-vee3/clerk.delete-user-passkey.md
- `clerk.delete_user_totp` — Destructive — https://policylayer.com/tools/io-github-vee3io-vee3/clerk.delete-user-totp.md
- `clerk.delete_user_web3_wallet` — Destructive — https://policylayer.com/tools/io-github-vee3io-vee3/clerk.delete-user-web3-wallet.md
- `clerk.delete_waitlist_entry` — Destructive — https://policylayer.com/tools/io-github-vee3io-vee3/clerk.delete-waitlist-entry.md
- `clerk.revoke_actor_token` — Destructive — https://policylayer.com/tools/io-github-vee3io-vee3/clerk.revoke-actor-token.md
- `clerk.revoke_admin_portal_link_token` — Destructive — https://policylayer.com/tools/io-github-vee3io-vee3/clerk.revoke-admin-portal-link-token.md
- `clerk.revoke_api_key` — Destructive — https://policylayer.com/tools/io-github-vee3io-vee3/clerk.revoke-api-key.md
- `clerk.revoke_invitation` — Destructive — https://policylayer.com/tools/io-github-vee3io-vee3/clerk.revoke-invitation.md
- `clerk.revoke_m2m_token` — Destructive — https://policylayer.com/tools/io-github-vee3io-vee3/clerk.revoke-m2m-token.md
- …and 218 more: https://policylayer.com/tools/io-github-vee3io-vee3.md

## For agents

This record is a snapshot. Live verdicts and the full registry:

- Check every server in your MCP config at once: `npx -y policylayer stack`
- Vet a server before you add it: install the mcp-precheck skill — `npx skills add https://policylayer.com` (skill text: https://policylayer.com/skill.md)
- Query the registry over MCP: endpoint `https://api.policylayer.com/mcp` — tools `check_mcp_server`, `check_mcp_stack`, `check_tool`, `search_registry`, `get_change_events`

---

Source: the PolicyLayer MCP registry — one continuously verified record per MCP server. Full record: https://policylayer.com/registry?q=io-github-vee3io-vee3 · API: https://policylayer.com/registry/api · Policy library: https://policylayer.com/policies/io-github-vee3io-vee3