Ask your assistant about our test results
Our MCP server is a small program that lets Claude, ChatGPT and other compatible assistants read NL;NL Labs’ public daily test results. Ask about a job, compare models or follow one model over time.
Free to use. Read-only. No NL;NL Labs account, sign-in or API key needed.
Server address
- Server address
https://mcp.nlnllabs.com/mcp
What you can ask
| Ask your assistant | What it reads | Tool |
|---|---|---|
| “What jobs does NL;NL Labs test?” | The jobs, what counts as right, which models are tested and the dates covered. Start here. | list_jobs |
| “What’s the pick for Extract?” | The model picked on that job’s page, the rule behind the pick, its figures and date. It also reports when there is no pick. | get_pick |
| “How has this model done on Extract over time?” | One model’s published results for one job: right answers, items tested, cost per 1,000 right and right answers per dollar. | get_model_history |
| “Compare all models on Extract on the latest day.” | Every model’s published result for that job and day. You can ask for a date instead. For document extraction, it also returns published invented, missed and unreadable counts. | get_day_results |
Add to Claude
- Open Customize → Connectors, then + Add → Add custom connector.
- Name it NL;NL Labs. Paste the server address above and continue.
- Review the detected authentication settings and continue. Choose No sign in, then Add. No credentials are needed.
- In a chat, open + → Connectors and enable NL;NL Labs.
Try: “What jobs does NL;NL Labs test? Include the date and source.”
On Team or Enterprise, an owner or an authorised administrator must add it first through Organization settings → Connectors → Add → Custom → Web. Members then find it under Customize → Connectors and connect.
Claude’s setup guide, checked 9 November 2026. Claude lists custom connectors on Free, Pro, Max, Ultra, Team and Enterprise; Free allows one.
Add to ChatGPT
Use ChatGPT on the web. Tested on a Pro account, 10 November 2026. On Business and Enterprise/Edu, workspace permissions apply; if you cannot create a connection, ask your workspace administrator.
- Open ChatGPT Plugins. Select Add → Add custom MCP server.
- Name it NL;NL Labs. Under Connection, paste the server address above. Choose No authentication.
- Read the warning, tick its acknowledgement and select Create as a plugin. Check that the four tools listed above appear.
- Install the resulting plugin. Start a new conversation, type @, and select NL;NL Labs.
Try: “Compare all models on Extract on the latest published day. Include the date and source.”
OpenAI’s help page, authentication options and using the plugin in a conversation, checked 9 November 2026.
If you hit a limit
Wait a minute and try again. The server is set to allow 100 requests per 60 seconds per connecting IP address at each Cloudflare location; enforcement is approximate.
Help
Write to research@nlnllabs.com. See our privacy page and terms.