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ColorPickr MCP server

Which MCP servers are ColorPickr's own, from the official registry and from asking its own domain, whether they answer, and what they offer. A program checked each of these, nobody copied them from a product page.

read 2026-10-28

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Whose server it is
  • Registry nameapp.colorpickr/colorpickrverified in the MCP registry

The registry name sits under colorpickr.app. The registry only lets a publisher use that namespace after proving control of the domain through DNS or HTTP.

When we asked itchecked 2026-10-28
  • Stateanswerschecked 2026-10-28
  • Tools6
  • Server calls itselfcolorpickr
  • Server version0.1.0
  • Protocol version2025-06-18

On 2026-10-28 the server answered initialize and tools/list without a sign-in. First answer in 90 ms.

Should an agent connect itConnect it
  • Its tools do every use case we checked: check whether text colors pass WCAG contrast; export palettes as CSS, Tailwind or Figma variables.

Once connected

  • For "check whether text colors pass WCAG contrast", the likely first call is check_contrast.
  • For "export palettes as CSS, Tailwind or Figma variables", the likely first call is export_palette.
  • Parameters are untyped or undescribed in 3 of 6 tools: check arguments before calling.

Said by rules from the measurements above. The likely first call is a model's pick from the tool list; read its description before relying on it.

Measured dailydaily checks: 7, the first on 2026-10-28
  • INITE MCP score98 of 100answers 99 · does the job 100 · definitions 92 · context 100 · connects 100
  • What an agent can do with it2 of 2 use cases
  • Answered100% of days7 of 7 daily checks
  • Median first answer1070 ms
  • Space in an agent's context≈ 808 tokensthe definitions of all its tools (6), which an agent carries on every turn
  • Tool definitionsA · 92 of 100
  • Typed results0 of 6 toolsdeclared outputSchema: results come typed, read once
  • Parameters without a description: in 3 of 6

What an agent can do with it

  • not sure · sample a color from any pixel on screen
  • can do · check whether text colors pass WCAG contrast
  • can do · export palettes as CSS, Tailwind or Figma variables

Each of the product's use cases, put to Jev against this server's tool list: can an agent do it with these tools?

Worth a look

None of the five warning signs in these definitions.

A program checks the server once a day: initialize and tools/list, no model. Tokens are the definitions' length at about four characters a token. The grade averages six checks of every tool's name, description, schema and annotations; it says how well the tools are described, not whether they work. The score weighs what was measured and nothing else: answering (25%), doing the product's job (25%), definitions (20%), context (10%), use (10%) and how readily a client connects (10%). A part that was not measured is left out, and a hidden instruction caps the score at 40. The state of vendors' MCP servers: method and numbers →

Tools it offers6 tools · read 2026-10-28
  • 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.

  • 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.

  • export_palette

    Turn a list of colors into code for CSS, Tailwind, SwiftUI, Android, Flutter and other formats ColorPickr supports.

  • simulate_color_vision

    Show how colors look with protanopia, deuteranopia, tritanopia or achromatopsia (Machado 2009).

How to connect

Add the server to your MCP client config. Claude Desktop, Cursor and most other clients read this shape:

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

Add it

Claude Code, in a terminal

claude mcp add --transport http colorpickr https://colorpickr.app/mcp

Add to CursorAdd to VS Code

claude.ai, ChatGPT and other clients: add https://colorpickr.app/mcp as a custom connector in the settings.

Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.