Nombrio in your AI assistant
Live trademark, domain & handle checks — in the chat, the editor, or your own agent
Connect once and your assistant checks every name it suggests against live data — the US trademark register, an EU screen, domains with prices, social handles, developer namespaces and the App Store — while you brainstorm. Free without an account. With your plan, the same tools run the full Clearance Check and start Naming Sessions, metered against the plan you already have.
Endpoint
https://nombrio.com/api/mcp- Transport
- Streamable HTTP
- Authentication
- Optional —
Authorization: Bearer <key> - Registry
com.nombrio/name-check- Tools · prompt
- check_name · check_names · naming-session
start_naming_session · get_naming_session (with your plan)
Set up in your client
Works with any MCP client over Streamable HTTP. Each card shows the free one-liner and the with-your-plan variant — replace <key> with a key from your dashboard.
Claude Code
Run once in your terminal:
claude mcp add --transport http nombrio https://nombrio.com/api/mcpWith your plan, pass your API key as a header:
claude mcp add --transport http nombrio https://nombrio.com/api/mcp --header "Authorization: Bearer <key>"Claude Code plugin
Add the Nombrio marketplace, then install the plugin. The installer asks for an API key once and stores it in your keychain — leave it empty for the free tier.
/plugin marketplace add https://nombrio.com/.claude-plugin/marketplace.json
/plugin install nombrio@nombrioOne plugin, both tiers: paste your API key at install to use your plan, or leave it empty for the free tier.
Cursor
Use the one-click button, or add this to .cursor/mcp.json in your project (or ~/.cursor/mcp.json):
{
"mcpServers": {
"nombrio": {
"url": "https://nombrio.com/api/mcp"
}
}
}Opens Cursor and adds the free server. If nothing opens, paste the config above.
With your plan, add the key as a header:
{
"mcpServers": {
"nombrio": {
"url": "https://nombrio.com/api/mcp",
"headers": {
"Authorization": "Bearer <key>"
}
}
}
}VS Code
Use a one-click button, or add this to .vscode/mcp.json (or your user mcp.json):
{
"servers": {
"nombrio": {
"type": "http",
"url": "https://nombrio.com/api/mcp"
}
}
}If nothing opens, paste the config above.
With your plan, add the key as a header — or use the "with API key" button, which prompts for the key once and stores it securely:
{
"servers": {
"nombrio": {
"type": "http",
"url": "https://nombrio.com/api/mcp",
"headers": {
"Authorization": "Bearer <key>"
}
}
}
}Claude.ai & Claude Desktop
Settings → Connectors → Add custom connector. Paste the URL and save — the connector is personal to your account and runs the free tier.
https://nombrio.com/api/mcpCustom connectors there don't accept an API key yet, so they run the free tier. For your plan, connect from Claude Code, Cursor, VS Code, or over REST.
ChatGPT
Settings → Apps & Connectors → Advanced → Developer mode, then add a connector with the URL. Authentication: No Authentication. Runs the free tier.
https://nombrio.com/api/mcpConnectors there run the free tier today. For your plan, connect from Claude Code, Cursor, VS Code, or over REST.
More clients: Windsurf, Cline, Zed, Gemini CLI, Codex CLI
Omit the headers line for the free tier.
Windsurf
Add to ~/.codeium/windsurf/mcp_config.json:
{
"mcpServers": {
"nombrio": {
"serverUrl": "https://nombrio.com/api/mcp"
}
}
}With your plan:
{
"mcpServers": {
"nombrio": {
"serverUrl": "https://nombrio.com/api/mcp",
"headers": {
"Authorization": "Bearer <key>"
}
}
}
}Cline
Add to Cline's MCP settings (cline_mcp_settings.json):
{
"mcpServers": {
"nombrio": {
"type": "streamableHttp",
"url": "https://nombrio.com/api/mcp"
}
}
}With your plan:
{
"mcpServers": {
"nombrio": {
"type": "streamableHttp",
"url": "https://nombrio.com/api/mcp",
"headers": {
"Authorization": "Bearer <key>"
}
}
}
}Zed
Add to Zed's settings.json:
{
"context_servers": {
"nombrio": {
"url": "https://nombrio.com/api/mcp"
}
}
}With your plan:
{
"context_servers": {
"nombrio": {
"url": "https://nombrio.com/api/mcp",
"headers": {
"Authorization": "Bearer <key>"
}
}
}
}Gemini CLI
Add to ~/.gemini/settings.json:
{
"mcpServers": {
"nombrio": {
"httpUrl": "https://nombrio.com/api/mcp"
}
}
}With your plan:
{
"mcpServers": {
"nombrio": {
"httpUrl": "https://nombrio.com/api/mcp",
"headers": {
"Authorization": "Bearer <key>"
}
}
}
}Codex CLI
Add to ~/.codex/config.toml:
[mcp_servers.nombrio]
url = "https://nombrio.com/api/mcp"With your plan (the key is read from an environment variable):
[mcp_servers.nombrio]
url = "https://nombrio.com/api/mcp"
bearer_token_env_var = "NOMBRIO_API_KEY"
# in your shell: export NOMBRIO_API_KEY=<key>Free tier or your plan — same tools, same endpoint
Anonymous calls get the free tier. Add an API key from your dashboard and the same tools switch to your plan — nothing extra to buy, no separate developer tier.
| Free tier (no key) | With your plan (API key) | |
|---|---|---|
| Tools | check_name · check_names · naming-session prompt | The same, plus start_naming_session · get_naming_session |
| Trademark coverage | US verdict (live USPTO) + EU count-only screen | US + EU + UK verdict, named conflicting marks (owner, class, status), exact 0–100 score |
| Domains, handles, namespaces, App Store | Included | Included |
| Naming | Your assistant brainstorms, check_names ranks the shortlist | Nombrio Naming Session: eight pre-cleared names from a one-line brief |
| Result link | Full interactive result in the browser | Full report, no re-metering |
| Limits | 15 checks a day per caller, shared daily pool | Metered against your plan — nothing extra to buy |
| Authentication | None | Authorization: Bearer <key> |
| Works in | Every client below, plus REST | Claude Code, the Claude Code plugin, Cursor, VS Code, Windsurf, Cline, Zed, Gemini CLI, Codex CLI, REST |
Plan quotas follow the Clearance Report, Pro and Premium tiers. Without a plan, the $9.99 Clearance Report in the browser covers one shortlist with UK + EU coverage, named marks and the exact score.
Keys are shown once, can be revoked any time, and stay in your own clients.
What a check returns
check_name checks one name; check_names screens a shortlist of 2–8 names in one call, in parallel, and returns them ranked best-first. Every result is live availability data at check time — not model guesswork — and includes a link to the full interactive result in the browser. With your plan the same call adds UK coverage, the named marks and the exact score.
US trademark verdict (USPTO)
Clear / caution / conflict against live US registry data — including how many potentially conflicting registrations exist and their Nice classes.
EU trademark screen (EUIPO)
A count-only screen of the EU register: how many similar live EU marks exist and their Nice classes. Mark names and owners come with your plan or the Clearance Report.
Domains with prices
.com, .io, .co, .app, .dev availability with registration prices.
Social handles
X/Twitter, TikTok, LinkedIn and Facebook handle availability. Instagram cannot be verified from a datacenter — you get a one-click confirm link instead of a guess.
Developer namespaces
npm, PyPI, crates.io, GitHub, and Docker Hub — for naming a library or tool.
iOS App Store
Whether similar-named apps already exist on the App Store.
Viability band + full result link
An overall viability estimate, plus a link to the full interactive result in the browser.
The free tools cover the US register plus a count-only EU screen. UK IPO coverage, the named conflicting marks (owner, class, status), and the exact 0–100 risk score are in the $9.99 Clearance Report.
The naming-session prompt
Give your assistant a one-line brief. The prompt has it brainstorm up to eight candidates, screen all of them with check_names in a single call, and hand you a ranked shortlist with the full-result links — the free-tier shape of a Nombrio Naming Session: your assistant generates, Nombrio clears. For eight pre-cleared names with UK + EU coverage and an exact score, start a Naming Session.
Connect your plan
Signed-in users create an API key on the dashboard. With the key, check_name and check_names return the full Clearance Check (US+EU+UK trademark verdict, named conflicting marks, exact score, report link) and start_naming_session runs Naming Sessions — all metered against your plan, nothing extra to buy.
Plain HTTP for your own agent — the same two tiers over REST, no MCP client needed:
curl -H "Authorization: Bearer <key>" "https://nombrio.com/api/v1/check?name=Lumeo"curl "https://nombrio.com/api/v1/check?name=Lumeo"Anonymous calls keep the free tier (15 checks a day per caller); with your key the call is metered against your plan.
Need higher limits or a partnership?
Tell us what you are building — early requests shape what ships next.
Fair use
The MCP server is free. Checks draw on a shared daily pool, and each caller has its own daily allowance (15 checks a day, resetting at UTC midnight — a batch of eight names counts as eight). When either is used up, the tool still returns the browser link, which has its own quota. Results are informational screening, not legal advice.
Prefer to check a name right now?
The same check runs free in the browser — no setup, no account.
Nombrio provides trademark screening, not legal advice. For legal counsel on trademark registration or disputes, consult a qualified trademark attorney. Names your assistant suggests are AI-generated; Nombrio returns live availability data.