MCP server
HomeZeroWidth Caliper
Build datasets and rubrics, then run evals that score your AI in Caliper.
- Endpoint
- Answering
- Works in
- 20 of 21 clients
- Tools
- 45
- Last checked
- Oct 12, 2026
Does ZeroWidth Caliper work in your MCP client?
Registry name ai.zerowidth/caliper, endpoint https://api.zerowidth.ai/mcp/x/caliper.
- Claude Codeworks
- Claude Desktopworks
- Claude.aiworks
- Claude API MCP connectorworks
- ChatGPTworks
- OpenAI Responses APIworks
- Codexworks
- Gemini CLIworks
- Cursorworks
- VS Code (GitHub Copilot)works
- Windsurf (Devin Desktop)works
- Zedworks
- JetBrains AI Assistantworks
- Junieunknownno source confirms Junie supports Streamable HTTP
- Clineworks
- Continueworks
- Gooseworks
- Lovableworks
- Replit Agentworks
- Bolt.newworks
- v0works
How clients sign in
No credentials: it answered lurq's probe without any.
Tools
search_docsget_doclist_docscaliper_datasets_getcaliper_datasets_updatecaliper_datasets_deletecaliper_datasets_update_itemcaliper_datasets_remove_itemcaliper_datasets_generatecaliper_datasets_generate_itemscaliper_rubrics_listcaliper_rubrics_getcaliper_rubrics_updatecaliper_rubrics_deletecaliper_evals_getcaliper_evals_runs_item_executioncaliper_evals_updatecaliper_evals_deletecaliper_evals_runs_cancelcaliper_sources_listcaliper_sources_over_timecaliper_traces_listcaliper_traces_getcaliper_source_feeds_listcaliper_sources_to_datasetcaliper_source_feeds_stopcaliper_starters_listcaliper_starters_installcaliper_datasets_listcaliper_flow_performancecaliper_evals_runs_listcaliper_evals_runs_getcaliper_evals_listcaliper_evals_runcaliper_datasets_createcaliper_datasets_add_itemscaliper_rubrics_createcaliper_evals_createcomments_listcomments_createcomments_resolvesearch_workspaceentity_tags_getentity_tags_browseentity_tags_set
Get the setup for your client from your agent
This page is a daily snapshot. lurq's connect_check answers for the client you are wiring this server into, with the exact steps and the config to paste in that client's own format, and lurq mcp-pin tells you when the server changes. One command connects Claude Code, Cursor, VS Code and other agents:
npx lurqrun
Free to start. How connect_check works
From lurq's credential-free probe of this server's endpoint on Oct 12, 2026, and each client's own documentation. This page refreshes every 168 hours. How the probe works, and how maintainers opt out.