Generate Chart Palette

palette.generate

ProductionBounded custom (Class B)best-effortfastv6.0.0

No network

Overview

When none of our reviewed palettes fit your constraints, ask us to create one new palette from clear preferences — distinct series colours or a continuous scale. Each call creates a fresh palette and returns a recovery seed; keep only that seed and palette.replay gives you exactly the same colours back. The result passed our contrast checks, but it is not a reviewed Squillify library palette. Prefer palette.recommend first. Max input 8192 bytes.

Sometimes you need colours our reviewed library cannot satisfy, and a single seed you can keep to get them back later.

Reliability

STRICT validation, random by design: the same preferences produce a fresh palette on every call, and the seed we return is what makes one of them repeatable — send it to palette.replay. Domain errors (not retryable — fix the input; unchanged input will fail again): PALETTE_COUNT_REQUIRED (kind=categorical without count — pass count 2..8); PALETTE_UNSUPPORTED_COUNT (count outside the range for the kind you asked for — 2..8 series colours, 2..32 stops); PALETTE_KIND_UNSUPPORTED (center sent for a kind that has no midpoint, or unknown kind — remove center, or fix kind); PALETTE_TARGET_UNSUPPORTED (target belongs to the other shape — leave it out and kind decides, or send generic to take the colours without chart tokens); PALETTE_GENERATION_EXHAUSTED (nothing we built met your contrast, grayscale, hue, or anchor requirements — relax intensity, hues, anchors, or accessibility); PALETTE_VALUE_INVALID (malformed intent, anchors, avoid, accessibility, direction, or an unknown center value; avoid with kind=cyclical; or a seed sent here instead of to palette.replay — correct the value).

Context footprint

Returns one palette object plus a replay envelope whose seed is enough on its own to reproduce the colours. No chart image is rendered. A successful call costs 1 execution credit.

When to use it

palette.recommend cannot meet your constraints and you need one new palette with a recovery seed.

You want a reviewed Squillify palette — use palette.recommend or palette.get. You already have a seed — use palette.replay.

Scope

Note

Creates one new chart palette from bounded preferences and returns a recovery seed that palette.replay turns back into these colours.

Non-goals

Does not replace palette.recommend when a reviewed library palette is enough
Does not replay a seed — that is palette.replay
Does not mark the result as a reviewed Squillify library palette
Does not add the result to our shared palette library
Does not draw or restyle a chart — you apply the returned colours

Properties

IdempotentRetry safeStreaming supportedFile input supportedRequires external service

Capabilities

generationvalidation

Cost & billing

Flat rate per invocation

MetercallsBillable onsuccessCost per call1 credit

File handling

Accepts file_refProduces file_refMax input8 KB

How we handle your data

Sensitive input, safe output

What this means

This skill may receive sensitive content, but it does not target sensitive data and returns only a structured non-sensitive result.

Squillify guarantees

Runs inside Squillify
This skill runs inside Squillify.
Payloads are not sent to an external service by this skill.
Squillify does not permanently store submitted payloads.
Telemetry records metadata only, not submitted content.
Submitted payloads are not used for training.
Submitted payloads are not reviewed by humans.
This skill does not target sensitive data.
The response does not contain submitted content.

Your responsibility

Squillify does not determine whether submitted content is sensitive. Your application is responsible for deciding what data it is allowed to submit. Your application is responsible for securing the response.

Read the Microskill Data Handling Policy

Input schema

Field	Type	Required	Description
kind	string	Yes	Which colour-set family to generate or look up.
count	integer	No	How many colours to return, 2 through 8 for categorical and 2 through 32 stops for a continuous ramp. Required for kind=categorical; omit it on a continuous kind to get the ramp's own stops.
surface	string	Yes	Chart background the colours were checked against.
intent	object	No	Closed colour preferences with optional intensity, temperature and huePreference; omit the whole object for balanced defaults.
anchors	array	No	Colour anchors, 0 through 4 closed {color, role} objects; omit it or send [] when you have no anchors.
avoid	array	No	Things to keep out, 0 through 8 hue families or #RRGGBB colours; omit it or send [] when nothing is ruled out. Not accepted with kind=cyclical.
accessibility	object	No	Closed readability requirements the generator builds to: colorVision, print and optional minimumSurfaceContrast; omit the whole object for default checks only.
center	string	No	Where a diverging ramp is centred; omit it for zero on diverging palettes. Rejected for other kinds.
direction	string	No	Colour order; omit it for normal.
target	string	No	Where the colours will be applied: chart_series, color_gradient or generic; omit it so the palette's own shape chooses.

Output schema

Field	Type	Required	Description
replay	object	Yes	Closed recovery envelope with the seed to keep, how it was issued, the canonical request baked into it and that request's digest.
palette	object	Yes	Closed ready-to-apply palette with provenance, kind, model, surface, colours, optional gradient stops, application tokens, evidence and warnings.

API contract

POST /v1/execute

curl

curl -sS -X POST "$BASE/v1/execute" -H "Authorization: Bearer $KEY" -H 'Content-Type: application/json' -d '{"skillKey":"palette.generate","input":{"kind":"categorical","count":6,"surface":"light","intent":{"temperature":"cool","huePreference":["blue","teal"]}}}'

Integrations

TypeScript SDK

import { Squillify } from "@squillify/sdk";

const sq = new Squillify({ apiKey: process.env.SQUILLIFY_API_KEY });

const { output } = await sq.execute("palette.generate", {"kind":"categorical","surface":"light","intent":{"temperature":"cool","intensity":"restrained","huePreference":["blue","teal"]},"count":6});

Errors

Code	HTTP	Retryable	Description
VALIDATION_ERROR	400	No	The request payload failed schema validation.
UNAUTHORIZED	401	No	Missing or invalid API key.
SKILL_NOT_ACCESSIBLE	403	No	The API key is not granted access to this skill.
SKILL_NOT_AVAILABLE_FOR_PLAN	403	No	This skill is not included in your current plan.
PLAN_ELIGIBILITY_UNAVAILABLE	503	Yes	Plan eligibility could not be decided. Retry after backoff.
SKILL_NOT_FOUND	404	No	The requested skill or version does not exist.
TENANT_RATE_LIMITED	429	Yes	Request rate limit exceeded. Retry after backoff.
QUOTA_EXCEEDED	429	Yes	Plan quota exhausted. Retryable once the quota period resets.
EXECUTION_TIMEOUT	504	Yes	Execution exceeded the allowed time budget.
PALETTE_GENERATION_EXHAUSTED	412	No	The input is valid but cannot be processed as-is.
PALETTE_COUNT_REQUIRED	400	No	The request payload failed this skill's input validation.
PALETTE_UNSUPPORTED_COUNT	400	No	The request payload failed this skill's input validation.
PALETTE_KIND_UNSUPPORTED	400	No	The skill does not support the requested variant.
PALETTE_TARGET_UNSUPPORTED	400	No	The skill does not support the requested variant.
PALETTE_VALUE_INVALID	400	No	The request payload failed this skill's input validation.

Other limits

Limit	Value
Recommended inline bytes	32 KiB

Limitations

Does not replace palette.recommend when a reviewed library palette is enough
Does not replay a seed — that is palette.replay
Does not mark the result as a reviewed Squillify library palette
Does not add the result to our shared palette library
Does not draw or restyle a chart — you apply the returned colours
Default colour choice when a reviewed palette exists — use palette.recommend
Getting a palette you already generated back — use palette.replay
Claiming brand-approved or editorial tone suitability

How to call

POST /v1/execute (requires authentication)

Request bodyjson

{
  "skillKey": "palette.generate",
  "input": {
    "kind": "categorical",
    "surface": "light",
    "intent": {
      "temperature": "cool",
      "intensity": "restrained",
      "huePreference": [
        "blue",
        "teal"
      ]
    },
    "count": 6
  }
}

Examples

Cool restrained six-series palette on light

Inputjson

{
  "kind": "categorical",
  "surface": "light",
  "intent": {
    "temperature": "cool",
    "intensity": "restrained",
    "huePreference": [
      "blue",
      "teal"
    ]
  },
  "count": 6
}

Expected outputjson

{
  "replay": {
    "seed": "sqg.eyJlIjoiMTAxMTEyMTMxNDE1MTYxNzE4MTkxYTFiMWMxZDFlMWYiLCJyIjp7ImNvdW50Ijo2LCJpbnRlbnQiOnsiaHVlUHJlZmVyZW5jZSI6WyJibHVlIiwidGVhbCJdLCJpbnRlbnNpdHkiOiJyZXN0cmFpbmVkIiwidGVtcGVyYXR1cmUiOiJjb29sIn0sImtpbmQiOiJjYXRlZ29yaWNhbCIsInN1cmZhY2UiOiJsaWdodCIsInRhcmdldCI6ImNoYXJ0X3NlcmllcyJ9fQ",
    "seedSource": "issued",
    "canonicalRequest": {
      "surface": "light",
      "target": "chart_series",
      "kind": "categorical",
      "count": 6,
      "intent": {
        "intensity": "restrained",
        "temperature": "cool",
        "huePreference": [
          "blue",
          "teal"
        ]
      }
    },
    "canonicalRequestDigest": "sha256:a8a91a5c055195eff73c414de6cf7e8486cf7a669a22e30c0494f28ac51d4198"
  },
  "palette": {
    "ref": {
      "seed": "sqg.eyJlIjoiMTAxMTEyMTMxNDE1MTYxNzE4MTkxYTFiMWMxZDFlMWYiLCJyIjp7ImNvdW50Ijo2LCJpbnRlbnQiOnsiaHVlUHJlZmVyZW5jZSI6WyJibHVlIiwidGVhbCJdLCJpbnRlbnNpdHkiOiJyZXN0cmFpbmVkIiwidGVtcGVyYXR1cmUiOiJjb29sIn0sImtpbmQiOiJjYXRlZ29yaWNhbCIsInN1cmZhY2UiOiJsaWdodCIsInRhcmdldCI6ImNoYXJ0X3NlcmllcyJ9fQ",
      "seedSource": "issued",
      "requestDigest": "sha256:a8a91a5c055195eff73c414de6cf7e8486cf7a669a22e30c0494f28ac51d4198",
      "source": "generated",
      "paletteDigest": "sha256:71affc729ff1b2bc5cc589d516a270ae5ac42969c1ce29495f6cafa6e5513849"
    },
    "displayName": null,
    "kind": "categorical",
    "model": "adaptive",
    "surface": "light",
    "cardinality": 6,
    "colors": [
      "#3F5613",
      "#358052",
      "#00675B",
      "#3283B0",
      "#565D99",
      "#9F72AF"
    ],
    "direction": "normal",
    "application": {
      "chartStyleTokens": {
        "--sq-series-1": "#3F5613",
        "--sq-series-2": "#358052",
        "--sq-series-3": "#00675B",
        "--sq-series-4": "#3283B0",
        "--sq-series-5": "#565D99",
        "--sq-series-6": "#9F72AF"
      },
      "target": "chart_series"
    },
    "evidence": {
      "surfaceContrastMinimum": 3.818,
      "pairwiseMinimum": 9.193,
      "state": "validated"
    },
    "warnings": []
  }
}

Tip

Six series colours plus a recovery seed you can keep on its own

Sequential cool ramp for a continuous scale