Mmcp.market

Chart Color System MCP server

by socraticstatic·io.github.socraticstatic/chart-color-system·v0.1.1
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Solve, audit and simulate colorblind-safe chart palettes. WCAG contrast, OKLab ΔE. Read-only.

A91/100grade A
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Safety scan
A91/100

full report

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If you have run it, two minutes of your experience saves the next person an afternoon.

Chart Color System tools (4)

write = sends, deletes, buys or posts
  • audit_paletteFree

    Audit existing chart colors for accessibility: pairwise OKLab separation under normal vision, deuteranopia, protanopia, tritanopia and achromatopsia, plus WCAG 2.2 non-text contrast (3:1) of every color against the chart background. Returns a pass / warn / fail verdict with the numbers behind it. Set ramp=true for sequential or diverging scales, whose steps are meant to be close.

  • build_rampFree

    Build an evenly spaced perceptual (OKLab) color scale: sequential from start to end, or diverging from start through mid to end. Returns the steps and a background-contrast audit (pairwise separation is not judged for ramps).

  • simulate_paletteFree

    Show what each color looks like to readers with deuteranopia, protanopia, tritanopia or achromatopsia (published Machado 2009 matrices), so an assistant can describe or render the palette as a colorblind reader sees it.

  • solve_paletteFree

    Generate a categorical chart palette of n colors (1-12) that maximizes perceptual separation under normal vision and colorblindness, with the given brand colors locked as anchors in slot order. Returns the palette, the worst pair distances, the engine's relaxation notes, a full accessibility audit against the background, and a link to open it in the app. Honest cap is 6 slots; above that the result says so.

Public scan report

scanner v0.1.3 · 2026-09-19 · same rubric, same numbers if you re-run it

no findings
  • –Code scanremote-only server, no package to scann/a
  • Live reliabilityremote reachable in 721ms20/20
  • Tool poisoning4 tool descriptions checked15/15
  • Auth qualityopen endpoint, read-only tools10/15
  • Maintenancelast push 3 days ago15/15
  • Maintainer identityregistry namespace matches repository owner; GitHub account older than a year8/10
Overall 91/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

Install directly

claude mcp add --transport http chart-color-system https://chart-color-mcp.vercel.app/mcp
Add to Cursor

Chart Color System: common questions

Is Chart Color System MCP server safe?
Yes, by our scan: it is graded A (91/100). Read the Chart Color System safety report
How do I install Chart Color System?
It runs remotely at chart-color-mcp.vercel.app. Add it to Claude Code, Claude Desktop or Cursor with the snippets above, or call it through the mcp.market gateway without installing anything.
Does Chart Color System need an API key?
Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is Chart Color System maintained?
The last commit was 3 days ago (2026-09-16). The latest release is v0.1.1.

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