Search the diamond inventory by shape, carat and colour; read diamond details in Nivoda. Hosted by usefulapi: connect it to Claude, ChatGPT, Cursor or any MCP client.
Turn on the Nivoda connector, then ask in plain words. The AI picks the tools.
For diamond traders and jewellers with a verified Nivoda account.
Filter the Nivoda inventory by shape, carat range, colour, clarity, cut, polish and grading lab. Results show price, discount and certificate details.
Use the media filter to show only diamonds with a photo. Page through the results with the total count.
Get one diamond by its item id from a search. Read its current price, discount, certificate details and media links.
The login page asks for your Nivoda username and Nivoda password.
Nivoda's API is for verified customers only. Your account must be verified and the Nivoda Feed Agreement signed (ask your Nivoda account manager). Your login is stored encrypted and used only to sign in to the Nivoda API on your behalf; it is never shown to anyone.
Team and Enterprise: an Owner adds the connector for the organization first.
No Add custom MCP server option? It depends on your account or workspace settings: see OpenAI's guide.
Run this command, then run /mcp in Claude Code to log in:
Add to Cursor or add this to ~/.cursor/mcp.json:
{
"mcpServers": {
"nivoda": {
"url": "https://nivoda.usefulapi.io/mcp"
}
}
} Add to VS Code or add this to .vscode/mcp.json:
{
"servers": {
"nivoda": {
"type": "http",
"url": "https://nivoda.usefulapi.io/mcp"
}
}
} Run these commands. The second one opens the login page:
Windsurf, Cline, Zed and other MCP clients: add this URL as a remote MCP server (Streamable HTTP). The client then opens the login page in your browser.
Add only the URL. Do not add an Authorization header or an API key to the client config. The server signs you in with OAuth: the login page asks for your Nivoda username and Nivoda password. If the config has such a header, remove it: some clients then send that header instead of the login token, and every call fails with 401.
| Plan | Price | Limit |
|---|---|---|
| Free | $0 | 50 tool calls / month |
| Proper user | $9/mo · $90/yr | Unlimited* |
*Pro fair use limit: 10,000 tool calls a month on this server. For more, write to [email protected].
Pro covers this Nivoda server only. Subscribe with nivoda_upgrade (it returns a Stripe Checkout link). Cancel any time with nivoda_cancel_subscription: Pro continues to the end of the paid period, with no refund for the current period, and running nivoda_upgrade before then undoes the cancel. Or write to [email protected].
nivoda_search_diamondsnivoda_get_diamondnivoda_usage_statusnivoda_request_featurenivoda_upgradenivoda_cancel_subscriptionSearch diamonds by shape, carat and colour. Narrow a search to diamonds with a photo. Open one diamond from a search. See what you can do for the details.
No. usefulapi is an independent service. It is not affiliated with or endorsed by Nivoda. The server calls the Nivoda API with your own Nivoda access, so it sees only the data that your account can see.
Yes. In Claude, add this server's URL as a custom connector. In ChatGPT, add it as a custom MCP server in Plugins. Then log in once. Cursor, VS Code, Claude Code and Codex work too. See the setup steps.
The login page asks for your Nivoda username and Nivoda password. See Before you connect for where to find them.
No. Add only the URL. Do not add an Authorization header or an API key to the client config. The server signs you in with OAuth: the login page asks for your Nivoda username and Nivoda password. If the config has such a header, remove it: some clients then send that header instead of the login token, and every call fails with 401.
The login stores them encrypted in the authorization grant of your connection. The server uses them to call the Nivoda API for you and to derive a private account id for usage metering. usefulapi does not show them on any page or in any reply. To stop all access, remove the connector and change or delete these credentials in Nivoda.
All 2 Nivoda tools are marked read-only.
The Free plan gives 50 tool calls / month. Pro costs $9/mo or $90/yr, with unlimited tool calls (fair use limit: 10,000 tool calls a month), for this Nivoda server only. Cancel any time: Pro then runs to the end of the paid period. Run nivoda_usage_status to see how many calls you used.
Ask the AI to run nivoda_upgrade: it returns a Stripe Checkout link. To cancel, run nivoda_cancel_subscription. Pro continues to the end of the paid period.
Tell the AI what you wanted to do. It can send the request with nivoda_request_feature. We store the text with the server name, the type of AI client and the tool you tried, not with your account, and read every request when we plan new tools. You can send up to 5 requests per day.
Any client that supports remote MCP servers (Streamable HTTP) with OAuth login: Claude (web and desktop), Claude Code, ChatGPT, Codex, Cursor, VS Code, Windsurf and others.
This is a Model Context Protocol endpoint — meant to be connected from an AI client, not opened in a browser. An invalid_token response at the URL is the auth gate working as designed; clients authenticate automatically.
Need a tool this server does not have, or a connection to another system? We build custom integrations and MCP servers.