io.github.aimsise/color-engine-mcp

NPM · COLOR-ENGINE-MCP · SCANNED AUG 3

Six pure, in-memory CSS color tools: parse, convert, WCAG/APCA contrast, gamut map, ramps, solver

Available components

+20 this week 62 62 Trust /100

Trust breakdown (6 categories)

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. How we score →

Supply Chain Security83

No malware found by supply-chain analysis.Pass
CVE check failed: a known medium-severity CVE affects @hono/node-server 1.19.17, reached via @modelcontextprotocol/sdk > @hono/node-server. A fixed version is available. View diagnostics → Fail
No install/post-install scripts declared.Pass
Only part of the dependency tree could be resolved (95 of 99), so this covers what we could see, not the whole tree. View diagnostics → Partial

Provenance & Transparency45

Source repository is publicly reachable at the declared URL. View diagnostics → Pass
Provenance check failed: no build-provenance attestation is published. See how to fix → View diagnostics → Fail
Clear OSI-approved license (MIT).Pass
Actively maintained (last published 53 days ago).Pass
Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail

Schema Quality & AI Usability65

AI-judged instruction clarity (excellent).Pass
Context-footprint check failed: tool/resource definitions use about 1601 tokens (~266/item across 6 items; 6 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
Usage-examples check failed: none of the tools include examples. See how to fix → Fail

Stability & Change Management0

Stability not yet verified: not enough scan history yet (needs a 30-day window).Unverified

Tool Coverage100

100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
100% of tool parameters carry a description.Pass
Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass

Capabilities100

Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass

Unverified: 1 category

A category scored 0 because we could not verify it: a data source with nothing on this package, evidence we could not reach, or a check we could not run. We only credit what we can confirm.

Install

Add this component to your MCP client. Where a client-specific snippet is available, pick your client below and copy it straight into your config; otherwise use the connection detail shown.

npm · color-engine-mcp

Claude Codex opencode OpenClaw Hermes Other

# add to Claude Code

claude mcp add aimsise-color-engine-mcp -- npx -y color-engine-mcp

# add to Codex CLI

codex mcp add aimsise-color-engine-mcp -- npx -y color-engine-mcp

// opencode.json

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "aimsise-color-engine-mcp": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "color-engine-mcp"
      ],
      "enabled": true
    }
  }
}

# add to OpenClaw

openclaw mcp add aimsise-color-engine-mcp --command npx --arg -y --arg color-engine-mcp

# ~/.hermes/config.yaml

mcp_servers:
  aimsise-color-engine-mcp:
    command: "npx"
    args: ["-y", "color-engine-mcp"]

// mcp.json

{
  "mcpServers": {
    "aimsise-color-engine-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "color-engine-mcp"
      ]
    }
  }
}

Changelog

Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.

2 Aug 26 +57
- GHSA-frvp-7c67-39w9 affects this package: medium ▼ security
- Provenance: unverified → fail ▼ security
- Known CVEs: unverified → fail ▼ security
- Install scripts: unverified → pass ▲ security
- Malware scan: unverified → pass ▲ security
- Stability: Stability not yet verified: not enough scan history yet (needs a 30-day window). security
- Schema quality: unverified → excellent ▲ functional
- Tool coverage: unverified → 100 ▲ functional
- License: unverified → pass ▲ functional
- Dependency health: unverified → partial ▲ functional
- Maintenance: unverified → pass ▲ functional
- MCP protocol: unverified → pass ▲ functional
- Licence: MIT functional
1 Aug 26 −13
- Tool coverage: 100 → unverified ▼ functional
31 Jul 26 −24
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
30 Jul 26 +18
- Tool coverage: unverified → 100 ▲ functional
28 Jul 26 −18
- Tool coverage: 100 → unverified ▼ functional
- First check of Schema quality: unverified functional
27 Jul 26 42

First indexed and scored.

Show 5 earlier entries Hide earlier entries

Diagnostics

Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.

Captured 3 Aug 2026 · Analysed npm/[email protected]

Provenance none

Ecosystem: npm · Outcome: none

Vulnerabilities 1 finding

ID	CVE	Severity	Vector	Fix available
GHSA-frvp-7c67-39w9		medium	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N	yes

Dependencies 95 packages

95 packages in the resolved dependency tree · 95 deprecated · 29 stale.

The dependency tree was only partially resolved, so these counts may be incomplete.

MCP tools — 6 exposed · ~1,331 tokens

The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability.

Tool Tokens

contrast ~186

Compute the WCAG 2.1 contrast ratio between two fully opaque CSS color strings and return WCAG tier flags (AA/AAA normal/large text). Set apca:true to also get the signed APCA-W3 Lc for text `a` over background `b`.

Input Output Examples

Name	Type	Req	Description
a	string	yes	First CSS color string, e.g. "#000000", "black", "oklch(0 0 0)" (max 256 chars)
apca	boolean	—	When true, additionally compute the APCA-W3 (SAPC-4g) lightness contrast Lc for text `a` over background `b` (returned as `apcaLc`)
b	string	yes	Second CSS color string, e.g. "#ffffff", "white", "oklch(1 0 0)" (max 256 chars)

Name	Type	Req	Description
aaLarge	boolean	yes	Meets WCAG 2.1 AA for large text (raw ratio >= 3)
aaNormal	boolean	yes	Meets WCAG 2.1 AA for normal text (raw ratio >= 4.5)
aaaLarge	boolean	yes	Meets WCAG 2.1 AAA for large text (raw ratio >= 4.5)
aaaNormal	boolean	yes	Meets WCAG 2.1 AAA for normal text (raw ratio >= 7)
apcaLc	number	—	Signed APCA-W3 (SAPC-4g) Lc for text `a` over background `b`, rounded to 2 decimals (positive = dark-on-light, negative = light-on-dark); present only when input `apca` is true
ratio	number	yes	2-decimal display value; tier flags derive from the unrounded raw ratio

No examples provided.

convert_color ~75

Convert a CSS color string into a canonical hex, rgb, hsl, or oklch format string.

Input Output Examples

Name	Type	Req	Description
input	string	yes	CSS color string to convert, e.g. "#ff0000", "tomato" (max 256 chars)
to	string	yes	Target color format to convert the input into

Name	Type	Req	Description
result	string	yes	The input color formatted in the requested target format (oklch is raw/lossless; hex/rgb/hsl are sRGB-clamped for out-of-gamut inputs)

No examples provided.

gamut_map ~99

Map any CSS color string into the sRGB gamut via perceptual OKLCH chroma reduction. Returns the nearest in-gamut hex, raw OKLCH components, and a `clamped` flag indicating whether the input was out-of-gamut.

Input Output Examples

Name	Type	Req	Description
input	string	yes	Any CSS color string, e.g. "#ff0000", "oklch(0.6 0.4 30)" (max 256 chars)

Name	Type	Req	Description
clamped	boolean	yes	true when input was out-of-sRGB-gamut and was mapped
hex	string	yes	Lowercase #rrggbb of the gamut-mapped (in-sRGB) color
oklch	object	yes	Raw (pre-rounding) OKLCH components of the mapped result

No examples provided.

generate_ramp ~347

Generate a tint-to-shade color ramp from a base CSS color. Returns an ordered list of swatches (light → dark) each with its in-gamut hex, display-rounded OKLCH components (l/c 5dp, h 2dp), WCAG contrast ratios (2dp) + tiers vs white and black, and an in-gamut flag. Optionally emits the ramp as design tokens via tokenFormat ("tailwind" JSON or a "css-variables" :root block).

Input Output Examples

Name	Type	Req	Description
base	string	yes	Any CSS color string, e.g. "#3b82f6", "oklch(0.6 0.35 30)" (max 256 chars)
deltaL	number	—	Total lightness span (> 0) centered on the base L — endpoints at base L ± deltaL/2 (overrides the fixed range).
lightnessMax	number	—	Upper lightness endpoint (OKLCH L, 0..1). Default 0.97.
lightnessMin	number	—	Lower lightness endpoint (OKLCH L, 0..1). Default 0.05.
steps	integer	—	Number of swatches (integer 2..512). Default 5.
tokenFormat	string	—	Optional design-token format for the ramp ("tailwind" JSON object or a "css-variables" :root block); when present the output includes a `tokens` string.
tokenName	string	—	Base name for emitted tokens (letters/digits/hyphens, must start with a letter, 1-64 chars). Default "color".

Name	Type	Req	Description
swatches	array	yes	—
tokens	string	—	Design-token string for the ramp (pretty-printed Tailwind JSON or a :root CSS-variables block); present only when tokenFormat was supplied

No examples provided.

parse_color ~70

Parse a CSS color string and return hex, rgb, oklch, and gamut info.

Input Output Examples

Name	Type	Req	Description
input	string	yes	CSS color string, e.g. "tomato", "#ff6347", "oklch(0.6 0.18 27)" (max 256 chars)

Name	Type	Req	Description
hex	string	yes	Lowercase #rrggbb sRGB-clamped hex of the parsed color
inGamut	boolean	yes	false when the input fell outside the sRGB gamut
oklch	object	yes	Raw (lossless) OKLCH components of the parsed color
rgb	object	yes	sRGB-clamped 0-255 integer channels; see inGamut

No examples provided.

solve_for_contrast ~554

Find a foreground color that meets one or more WCAG 2.1 contrast targets against a background. Binary-searches OKLCH lightness (holding hue/chroma fixed) and returns the nearest-compliant hex plus the achieved ratio. Pass `target` for one target or `targets` for several; `prefer` selects lighter/darker/either; `hue`/`chroma` pin the foreground chromaticity. If BOTH `target` and `targets` are provided, `targets` takes precedence. The response shape differs by mode: a single `target` returns `{ met, color, ratio }` (with an optional `nearMiss` flag); `targets` returns `{ results: [{ met, color, ratio, nearMiss? }, ...] }`. The output schema is an all-optional superset of both shapes (SDK 1.29 single-shape limitation). An unparseable background returns the PARSE_FAILED error; a translucent background (alpha < 1, e.g. rgba()/hsla()/#rgba/#rrggbbaa) returns ALPHA_UNSUPPORTED — composite it over its backdrop first.

Input Output Examples

Name	Type	Req	Description
background	string	yes	Background CSS color string, e.g. "#FFFFFF", "oklch(0.6 0.1 240)" (max 256 chars).
chroma	number	—	Fixed OKLCH chroma (>= 0) held constant during the lightness search (reduced along the fixed hue when the sRGB gamut requires it). Defaults to the background's own chroma when omitted; pass chroma ex…
hue	number	—	Fixed OKLCH hue (degrees, cyclic) held constant during the lightness search. Giving hue WITHOUT chroma does not add saturation: chroma then defaults to the background's own chroma, which is 0 for ach…
prefer	string	—	Search direction relative to the background lightness. Default "either".
target	number	—	Single WCAG 2.1 contrast target (e.g. 4.5, 7). Use this OR `targets` (targets wins if both given).
targets	array	—	Multiple WCAG 2.1 contrast targets (1-50 entries; an empty array is rejected). Takes precedence over `target`. Returns one result per target.

Name	Type	Req	Description
color	—	—	SINGLE-target: nearest-compliant foreground hex, or null when unreachable
met	boolean	—	SINGLE-target: whether the target contrast was achievable
nearMiss	boolean	—	SINGLE-target: present/true when met was granted via the near-ceiling tolerance
ratio	—	—	SINGLE-target: achieved WCAG 2.1 ratio (display-rounded), or peak attainable when not met
results	array	—	MULTI-target: one result per requested target (present only for the `targets` path)

No examples provided.

On this page

Handy links

Scoring key

80+ high trust
60–79 medium
below 60 low

How we score

Score history · last 30 days

27 Jul 3 Aug