Cvdsafe

Install

Works with Claude Code, Codex, VS Code, Cursor, Windsurf, Claude Desktop. Read the repository before you give any tool access to your data.

npx agentmarket install connector/vince-gonzalez-cvdsafe

About

No reviews yet. Installed it? Reviews come from verified installers only. How reviews work

Permissions

What this server can do and what it asks for, from its tool list, install config and code. Checked Oct 26, 2026.

Tools

6 read · 0 write · 0 delete · 3 not yet classified

Secrets

None asked for

Install scripts

None found

Runs as

Node.js package

Tools (9)

Read from the source code; the running server may differ. Descriptions are the server’s own words; hidden characters are shown as [U+…].

• checkContrastCheck text/background contrast against WCAG

  Check whether a foreground color is legible on a background color per WCAG 2.x contrast ratios. Returns the ratio (1-21) and whether it passes AA and AAA. Set large=true for text >=18pt (or 14pt bold). This is the legibility axis, separate from color-blindness.

• checkImageCheck an image for colorblind-safety

  Check whether the colors in an image, chart, screenshot or mockup stay distinguishable for people with color-vision deficiency. Extracts the image's dominant colors, simulates protanopia, deuteranopia and tritanopia, and flags the color pairs that collapse into each other — each with how much of the image's area those colors cover, so a conflict between two large regions ranks above one between two specks. Reads PNG and JPEG. Pass `path` for a local file, or a base64 `dataUri`. Set returnSimulated=true to also get back the image as a deuteranope sees it. A screening aid, not a legal (ADA/WCAG)…

• checkPaletteCheck a color palette for colorblind-safety

  Check whether a set of colors stays distinguishable for people with color-vision deficiency (colorblindness). Simulates protanopia, deuteranopia and tritanopia and flags the pairs whose perceptual difference collapses under simulation. A screening aid, not a legal accessibility (ADA/WCAG) audit.

• compareVisionShow a color under all three deficiencies

  Return how a single hex color appears under protanopia, deuteranopia and tritanopia at once, for a side-by-side comparison.

• fixPaletteFix a palette to be colorblind-safe

  Take a set of colors that fails the colorblind-safety check and return an adjusted set that passes, staying as close to the originals as possible. Conflicting colors are separated in lightness (the axis color-vision deficiency preserves). Returns the new colors, how far each moved, and whether it fully passes.

• generateSafePaletteGenerate a colorblind-safe palette

  Return N colorblind-safe hex colors — distinct to each other under protanopia, deuteranopia and tritanopia. Seeded with the Okabe-Ito palette and safely extended above eight. Use when asked for accessible / colorblind-safe / colorblind-friendly colors for a chart, plot, map or UI. Never returns an unsafe color.

• plateGenerate an Ishihara-style color-vision test plate

  Generate a pseudoisochromatic (Ishihara-style) test plate: a digit hidden in a field of dots whose colors are distinct to normal vision but collapse under the chosen deficiency. Returns the plate image. Use when asked to create a colorblindness test plate or demonstrate what a plate looks like. Reproducible from a seed.

• simulateColorSimulate a color under colorblindness

  Return how a single hex color appears to someone with a given type of color-vision deficiency (protan, deutan, or tritan). Set severity 0..1 for a partial deficiency (anomalous trichromacy); 1 is the full dichromat case.

• simulateImageRecolor an image as a colorblind person sees it

  Recolor an image, chart, screenshot or mockup the way someone with color-vision deficiency sees it, and return the recolored image. Use this to SHOW what a design looks like through colorblindness (to check whether it stays readable, pair it with cvdsafe's checkImage). Reads PNG and JPEG — pass `path` for a local file, or a base64 `dataUri`. `type` picks the deficiency (default deutan); `severity` 0..1 sets strength.

Compare and alternatives

Featured in

• Best MCP servers for accessibility

Signals

Stars

1

Forks

0

Open issues

0

Last commit

Oct 5, 2026 (25 days ago)

Last release

Sep 2, 2026 (1 month ago)

From GitHub (fetched Oct 24, 2026).

Details

Registry name

io.github.vince-gonzalez/cvdsafe

Version

0.2.0

Auth

No auth

Packages

npm cvdsafe-mcp

License

MIT

Repository

github.com/vince-gonzalez/opticquiz.com

First seen

Oct 24, 2026

Last checked

Oct 24, 2026

Source

Official MCP Registrygithub-graphql