# Caliper UI

> Find React UI components, read their docs, and get shadcn install commands.

- name: site.caliperui/caliper
- version: 1.0.0
- connection class: R0 (autonomous)
- trust: 83/100 flags: no-repository
- quality: 82/100 (new)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/site.caliperui%2Fcaliper
- tools: https://api.protogrid.dev/v1/servers/site.caliperui%2Fcaliper/tools

**An agent can connect right now, no human step.** Remote endpoint, no authentication, reachable on the last probe.

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "caliper": {
      "type": "http",
      "url": "https://caliperui.site/mcp"
    }
  }
}
```


## Trust

- hygiene: 80
- liveness: 100
- freshness: 100
- provenance: 55
- drivers: +dns-namespace +website +reachable +uptime-100% +updated-3d-ago -no-repository
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 82/100 (new)

### protocol: 75 (weight 25)

- warn `protocol.modern`: newest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
- n/a `protocol.stateless`: only applies to 2026-07-28 servers
- pass `protocol.transport`: streamable HTTP
- n/a `protocol.list_ttl`: only applies to 2026-07-28 servers

### authorization: n/a (weight 15)

- n/a `auth.prm`, `auth.as_metadata`, `auth.cimd`: no remote uses OAuth
- n/a `auth.secret_in_url`: no templated URL

### tool hygiene: 88 (weight 30)

- pass `tools.descriptions`: every tool has a description
- pass `tools.description_length`: descriptions are concise
- pass `tools.schemas`: every tool has an object input schema
- pass `tools.annotations`: 5 of 5 tools declare readOnlyHint or destructiveHint
- fail `tools.directory_hints`: no tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: get_component_source (destructiveHint, idempotentHint, openWorldHint); get_install_command (destructiveHint, idempotentHint, openWorldHint); get_design_rules (destructiveHint, idempotentHint, openWorldHint); …
- pass `tools.token_cost`: about 421 tokens to load every tool
- pass `tools.api_dump`: tools are not a one-to-one API dump
- pass `tools.hidden_text`: no hidden text in tool names, descriptions, schemas or annotations

### stability: n/a (weight 15)

- n/a `stability.changes`, `stability.rug_pull`, `stability.new_links`: tool history recorded for 3 of the 7 days needed

### dependencies: n/a (weight 15)

- n/a `deps.known_vulns`, `deps.mcp_sdk_version`, `deps.resolvable`: no npm or PyPI package

- tools: 5, about 421 tokens to load them all
- tool set hash: 5c8d0ea1457cd6f60558d640c327ae75
- badge: [![protogrid quality](https://protogrid.dev/badge/site.caliperui/caliper.svg)](https://protogrid.dev/servers/site.caliperui/caliper)
- Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed.

### Tool changes

_No tool definition changes recorded._

## Remotes

- https://caliperui.site/mcp (streamable-http, auth none, reachable true, uptime30d 1)

## Packages

_none_

## Tools (5)

- `get_component`: A component's docs as Markdown: when to use it, install command, props for every part, keyboard and accessibility notes. Includes the usage example for Free parts, and for Pro parts when the caller has a licence.
- `get_component_source`: Every source file the component needs, with the path to write it to. Pro parts need Authorization: Bearer <CALIPER_TOKEN> on the MCP connection and an active Pro or Team licence.
- `get_design_rules`: The conventions to follow when building UI with Caliper UI in this project: tokens, hierarchy, focus, motion and interface copy.
- `get_install_command`: The components.json registry config and the shadcn CLI command that installs the given parts with their dependencies.
- `search_components`: Find Caliper UI components, blocks and Pro screens by what they do (for example 'date range', 'billing usage', 'chat composer'). Returns names to pass to the other tools.