api.zerowidth.ai
LiveMCP ServerZeroWidth Caliper: Build datasets and rubrics, then run evals that score your AI in Caliper. (text from the Official MCP Registry)
29/29Connection Checks That Worked, All 7 Servers (With Or Without A Login)
270 msTypical Response Time
299Most Tools On One Server
2025-06-18Protocol Version
7 h agoLast Checked, Any Server (2026-10-27T15:39:39Z)
NoLogin Required
Servers On This Host
| Address | Name | Status | Recent Checks OK | Response Time | Tools | Last Checked |
|---|---|---|---|---|---|---|
| https://api.zerowidth.ai/mcp/x/caliper | ZeroWidth Caliper | Live | 5/5 | 270 ms | 45 | 23 h ago · receipt |
| https://api.zerowidth.ai/mcp | ZeroWidth | Live | – | 567 ms | 299 | 14 h ago · receipt |
| https://api.zerowidth.ai/mcp/x/compass | ZeroWidth Compass | Live | – | 259 ms | 62 | 13 h ago · receipt |
| https://api.zerowidth.ai/mcp/x/ledger | ZeroWidth Ledger | Live | – | 809 ms | 40 | 19 h ago · receipt |
| https://api.zerowidth.ai/mcp/x/napkin | ZeroWidth Napkin | Live | – | 327 ms | 68 | 18 h ago · receipt |
| https://api.zerowidth.ai/mcp/x/prism | ZeroWidth Prism | Live | – | 499 ms | 52 | 7 h ago · receipt |
| https://api.zerowidth.ai/mcp/x/workbench | ZeroWidth Workbench | Live | – | 289 ms | 61 | 20 h ago · receipt |
How we check: we connect without logging in and ask for the list of tools. We never send credentials and never pay. Tools that don't state a price are never called; for tools that do, we send at most 2 unpaid calls to read the payment request. We make test purchases only from HTTP x402 services, never from MCP tools. Signed records: raw data page · free quick check (JSON)