Connect Chart Color System and your agent gets 4 tools, among them audit_palette, build_ramp, simulate_palette. It answers at https://chart-color-mcp.vercel.app/mcp over streamable HTTP, and it listed its tools to an anonymous client, so no sign-in was needed for that. Our probes reached it 4 of 4 times since 16 September 2026; the last check, on 24 October 2026, succeeded.
Solve, audit and simulate colorblind-safe chart palettes. WCAG contrast, OKLab ΔE. Read-only.
Description as the publisher wrote it.
| Tool | What it does |
|---|---|
audit_palette | 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 Inputs: colors, background, ramp |
build_ramp | 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). Inputs: kind, start, end, mid, steps, background |
simulate_palette | 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. Inputs: colors, modes |
solve_palette | 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, Inputs: n, anchors, background, grid, posture |
Every block below points at https://chart-color-mcp.vercel.app/mcp. Pick your client and copy.
claude mcp add --transport http chart-color-system https://chart-color-mcp.vercel.app/mcp
{
"mcpServers": {
"chart-color-system": {
"command": "npx",
"args": ["-y", "mcp-remote", "https://chart-color-mcp.vercel.app/mcp"]
}
}
}{
"mcpServers": {
"chart-color-system": {
"url": "https://chart-color-mcp.vercel.app/mcp"
}
}
}{
"servers": {
"chart-color-system": {
"type": "http",
"url": "https://chart-color-mcp.vercel.app/mcp"
}
}
}{
"context_servers": {
"chart-color-system": {
"url": "https://chart-color-mcp.vercel.app/mcp"
}
}
}{
"mcpServers": {
"chart-color-system": {
"serverUrl": "https://chart-color-mcp.vercel.app/mcp"
}
}
}{
"mcpServers": {
"chart-color-system": {
"url": "https://chart-color-mcp.vercel.app/mcp"
}
}
}name: Chart Color System
version: 0.0.1
schema: v1
mcpServers:
- name: Chart Color System
type: streamable-http
url: https://chart-color-mcp.vercel.app/mcp{
"mcpServers": {
"chart-color-system": {
"httpUrl": "https://chart-color-mcp.vercel.app/mcp"
}
}
}{
"mcpServers": {
"chart-color-system": {
"type": "http",
"url": "https://chart-color-mcp.vercel.app/mcp"
}
}
}{
"mcpServers": {
"chart-color-system": {
"url": "https://chart-color-mcp.vercel.app/mcp"
}
}
}goose://extension?url=https%3A%2F%2Fchart-color-mcp.vercel.app%2Fmcp&type=streamable_http&id=chart-color-system&name=Chart%20Color%20System
It answered our last check on 24 October 2026 in 211 ms. Over 4 checks since 16 September 2026 it answered 4. Status here comes from Neuronto's own probes, not from the publisher.
4, as returned by the server's own tools/list on 24 September 2026: audit_palette, build_ramp, simulate_palette, solve_palette.
It answered our last check on 24 October 2026 in 211 ms. Over 4 checks since 16 September 2026 it answered 4.
Put the server under mcpServers in ~/.cursor/mcp.json with the URL https://chart-color-mcp.vercel.app/mcp. The exact JSON is above, with the same setup for Claude Code, Claude Desktop, VS Code, Windsurf, Zed, Gemini CLI and the rest.
It listed its tools to an anonymous client, so reading the tool list needs no key. Individual tools can still ask for credentials in their own inputs.
Publisher: io.github.socraticstatic. Endpoint host: chart-color-mcp.vercel.app. ARD identifier: urn:air:io.github.socraticstatic:mcp:chart-color-system.
First indexed 16 September 2026. The tools are exactly what the server returned; nothing on this page
is inferred from its name. Ranking in Neuronto search is never for sale.