# ColorPickr

> Contrast checks with fixes, OKLCH harmonies, palettes, color-blind previews and code export.

- name: app.colorpickr/colorpickr
- version: 0.1.0
- connection class: R0 (autonomous)
- trust: 83/100 flags: no-repository
- quality: 90/100 (strong)
- owner: not claimed
- descriptor: https://api.protogrid.dev/v1/servers/app.colorpickr%2Fcolorpickr
- tools: https://api.protogrid.dev/v1/servers/app.colorpickr%2Fcolorpickr/tools

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

## Connection (mcpServers)

```json
{
  "mcpServers": {
    "colorpickr": {
      "type": "http",
      "url": "https://colorpickr.app/mcp"
    }
  }
}
```


## Trust

- hygiene: 80
- liveness: 100
- freshness: 100
- provenance: 55
- drivers: +dns-namespace +website +reachable +uptime-100% +updated-21d-ago -no-repository
- Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed.

## Quality 90/100 (strong)

### protocol: 88 (weight 25)

- pass `protocol.modern`: supports 2026-07-28 (server/discover)
- pass `protocol.stateless`: answers without a session
- pass `protocol.transport`: streamable HTTP
- warn `protocol.list_ttl`: tools/list declares ttlMs 0, so clients re-fetch it on every use

### 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`: 6 of 6 tools declare readOnlyHint or destructiveHint
- fail `tools.directory_hints`: no tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: check_contrast (destructiveHint); convert_color (destructiveHint); export_palette (destructiveHint); …
- pass `tools.token_cost`: about 833 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: 100 (weight 15)

- pass `stability.changes`: no tool changes in 30 days
- pass `stability.rug_pull`: no tool changed its meaning under the same name
- pass `stability.new_links`: no tool change named a new site

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

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

- tools: 6, about 833 tokens to load them all
- tool set hash: 5a6cf2e139d3afd96bca9f9e5efb9dc9
- badge: [![protogrid quality](https://protogrid.dev/badge/app.colorpickr/colorpickr.svg)](https://protogrid.dev/servers/app.colorpickr/colorpickr)
- 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://colorpickr.app/mcp (streamable-http, auth none, reachable true, uptime30d 1)

## Packages

_none_

## Tools (6)

- `check_contrast`: Check text/background contrast with WCAG 2 ratio, APCA Lc and a suggested fix that keeps the hue.
- `convert_color`: Convert a hex color to RGB, HSL and OKLCH.
- `export_palette`: Turn a list of colors into code for CSS, Tailwind, SwiftUI, Android, Flutter and other formats ColorPickr supports.
- `generate_harmony`: Build a color harmony from a base color in OKLCH, mapped into the sRGB gamut.
- `roll_palette`: Generate a 5-color palette that always contains a light/dark pair passing WCAG AA; optionally keep locked colors.
- `simulate_color_vision`: Show how colors look with protanopia, deuteranopia, tritanopia or achromatopsia (Machado 2009).