Saylor Innovations Data Desk
Color palette from a hex color - complementary, split, analogous, triadic and tetradic harmonies, a 50 to 950 scale, tints, shades and WCAG contrast ratios
DataLiveeip155:8453Exactvia facilitator:payAI
Color palette from a hex colorComplementary and triadic colorsGenerate tailwind style color scTints and shades of a colorAccessible text color for a back
Calls · 30d
2
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 21 snapshots so far.
$15.76
Verified settled volume
1,657 settlements proven x402 by their on-chain EIP-3009 marker.
$0.010
Listed price
As published in the catalog. Always read the live 402 before paying.
—
Calls · 30d
Upstream's own call count for this endpoint, not ours.
—
Unique payers · 30d
Never called
—
Upstream on-chain volume
Reported by the source catalog.
Paid to
0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aaThe wallet the 402 directs payment to. Its whole payment record — every payer, every chain — is on the merchant page.
Asset 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913
Provider
The payTo wallet does not resolve to a registered ERC-8004 agent. That is not a verdict on the service — most of the catalog is unregistered.
Accepts
The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.
0.01USDC≈ $0.01 USD
on Base · exact scheme
Pay 0.01 USDC on Base to 0xA2A8…fc8aa. The signed payment is good for 2 minutes.
- Paid to
- 0xA2A8…fc8aa
- USD Coin contract
- 0x8335…02913
- Payment window
- 2 minutes
- As published
- 10000 smallest units
The catalog’s raw entry
[
{
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"memo": "saylor:datadesk:color-palette",
"name": "USD Coin",
"version": "2",
"facilitatorOnly": true,
"assetTransferMethod": "eip3009"
},
"payTo": "0xA2A8dF0f7CaaBEa4e120a2568118f141569fc8aa",
"amount": "10000",
"scheme": "exact",
"network": "eip155:8453",
"maxTimeoutSeconds": 120
}
]Extensions
{
"bazaar": {
"info": {
"input": {
"type": "http",
"method": "GET",
"queryParams": {
"color": "3366ff"
}
},
"output": {
"type": "json",
"example": {
"hsl": {
"h": 225,
"l": 60,
"s": 100
},
"rgb": {
"b": 255,
"g": 102,
"r": 51
},
"base": {
"hex": "#3366ff",
"readable_text": "#ffffff",
"contrast_on_black": 4.49,
"contrast_on_white": 4.68
},
"note": "Harmonies rotate the hue on the HSL wheel; contrast ratios follow WCAG 2.x (4.5 for body text AA, 3 for large text, 7 for AAA). The 50-950 scale keeps the hue and varies lightness, similar to Tailwind-style ramps.",
"input": "#3366ff",
"tints": [
{
"hex": "#4775ff",
"mix_with_white_percent": 10
},
{
"hex": "#668cff",
"mix_with_white_percent": 25
},
{
"hex": "#99b3ff",
"mix_with_white_percent": 50
},
{
"hex": "#ccd9ff",
"mix_with_white_percent": 75
}
],
"shades": [
{
"hex": "#2e5ce6",
"mix_with_black_percent": 10
},
{
"hex": "#264dbf",
"mix_with_black_percent": 25
},
{
"hex": "#1a3380",
"mix_with_black_percent": 50
},
{
"hex": "#0d1a40",
"mix_with_black_percent": 75
}
],
"source": "color math",
"harmonies": {
"triadic": [
{
"hex": "#ff3366",
"readable_text": "#000000",
"contrast_on_black": 5.92,
"contrast_on_white": 3.55
},
{
"hex": "#66ff33",
"readable_text": "#000000",
"contrast_on_black": 15.92,
"contrast_on_white": 1.32
}
],
"analogous": [
{
"hex": "#33ccff",
"readable_text": "#000000",
"contrast_on_black": 11.22,
"contrast_on_white": 1.87
},
{
"hex": "#6633ff",
"readable_text": "#ffffff",
"contrast_on_black": 3.48,
"contrast_on_white": 6.03
}
],
"complementary": [
{
"hex": "#ffcc33",
"readable_text": "#000000",
"contrast_on_black": 13.94,
"contrast_on_white": 1.51
}
],
"tetradic_square": [
{
"hex": "#ff33cc",
"readable_text": "#000000",
"contrast_on_black": 6.6,
"contrast_on_white": 3.18
},
{
"hex": "#ffcc33",
"readable_text": "#000000",
"contrast_on_black": 13.94,
"contrast_on_white": 1.51
},
{
"hex": "#33ff66",
"readable_text": "#000000",
"contrast_on_black": 15.64,
"contrast_on_white": 1.34
}
],
"split_complementary": [
{
"hex": "#ff6633",
"readable_text": "#000000",
"contrast_on_black": 7.2,
"contrast_on_white": 2.92
},
{
"hex": "#ccff33",
"readable_text": "#000000",
"contrast_on_black": 17.92,
"contrast_on_white": 1.17
}
]
},
"temperature": "cool",
"css_variables": "--color-50: #f0f4fe; --color-100: #dde5fd; --color-200: #b3c6ff; --color-300: #7a9cff; --color-400: #3d6eff; --color-500: #0040ff; --color-600: #0034d1; --color-700: #002aa8; --color-800: #002080; --color-900: #001657; --color-950: #000d33;",
"scale_50_to_950": {
"50": "#f0f4fe",
"100": "#dde5fd",
"200": "#b3c6ff",
"300": "#7a9cff",
"400": "#3d6eff",
"500": "#0040ff",
"600": "#0034d1",
"700": "#002aa8",
"800": "#002080",
"900": "#001657",
"950": "#000d33"
}
}
}
},
"schema": {
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"required": [
"input"
],
"properties": {
"input": {
"type": "object",
"required": [
"type",
"method"
],
"properties": {
"type": {
"type": "string",
"const": "http"
},
"method": {
"enum": [
"GET",
"POST",
"PUT",
"PATCH",
"DELETE",
"HEAD"
],
"type": "string"
},
"queryParams": {
"type": "object",
"required": [
"color"
],
"properties": {
"color": {
"type": "string",
"description": "Hex color such as 3366ff or #36f"
}
}
}
},
"additionalProperties": false
},
"output": {
"type": "object",
"required": [
"type"
],
"properties": {
"type": {
"type": "string",
"const": "json"
},
"example": {
"type": "object",
"required": [
"input",
"harmonies",
"scale_50_to_950"
],
"properties": {
"hsl": {
"type": "object",
"properties": {
"h": {
"type": [
"number",
"null"
],
"description": "Hue in degrees"
},
"l": {
"type": [
"number",
"null"
],
"description": "Lightness in percent"
},
"s": {
"type": [
"number",
"null"
],
"description": "Saturation in percent"
}
},
"description": "Hue, saturation and lightness"
},
"rgb": {
"type": "object",
"properties": {
"b": {
"type": [
"number",
"null"
],
"description": "Blue 0-255"
},
"g": {
"type": [
"number",
"null"
],
"description": "Green 0-255"
},
"r": {
"type": [
"number",
"null"
],
"description": "Red 0-255"
}
},
"description": "Red, green and blue channels"
},
"base": {
"type": "object",
"properties": {
"hex": {
"type": [
"string",
"null"
],
"description": "Normalised hex colour"
},
"readable_text": {
"type": [
"string",
"null"
],
"description": "Readable text"
},
"contrast_on_black": {
"type": [
"number",
"null"
],
"description": "Contrast on black"
},
"contrast_on_white": {
"type": [
"number",
"null"
],
"description": "Contrast on white"
}
},
"description": "Base asset or base currency"
},
"note": {
"type": "string",
"description": "Caveat or context for reading the result"
},
"input": {
"type": "string",
"description": "The colour that was normalised"
},
"tints": {
"type": "array",
"items": {
"type": "object",
"properties": {
"hex": {
"type": [
"string",
"null"
],
"description": "Hex colour of the tint"
},
"mix_with_white_percent": {
"description": "Mix with white, as a percentage"
}
}
},
"description": "Lighter mixes with white"
},
"shades": {
"type": "array",
"items": {
"type": "object",
"properties": {
"hex": {
"type": [
"string",
"null"
],
"description": "Hex colour of the shade"
},
"mix_with_black_percent": {
"description": "Mix with black, as a percentage"
}
}
},
"description": "Darker mixes with black"
},
"source": {
"type": "string",
"description": "Data source the values come from"
},
"harmonies": {
"type": "object",
"description": "Complementary, split, analogous, triadic and tetradic colours with contrast ratios"
},
"temperature": {
"type": "string",
"description": "Whether the colour reads warm, cool or neutral"
},
"css_variables": {
"type": "string",
"description": "Css variables"
},
"scale_50_to_950": {
"type": "object",
"description": "Scale 50 to 950"
}
}
}
}
}
}
}
}
}Provenance
- Seen in the source catalog
- 2026-10-18 07:12Z
- Last indexed by Roundhouse
- 2026-10-26 21:16Z
- Last enriched (probe, favicon, geo)
- 2026-10-18 10:45Z
- x402 version
- 2
- Max timeout
- 120s
- Liveness probe
- HTTP 404
Hand this page to an agent
Copy the prompt and paste it into Claude, an MCP client or your own agent — it will vet this service and call it over the free read API. No key, no account.
GET api.roundhouseai.io/v0/endpoints
This endpoint's own trailing-30-day call count, as published by the upstream catalog and snapshotted daily. 21 snapshots so far. Verified volume counts only settlements with an on-chain EIP-3009 marker.
Show the promptHide the prompt
Using Roundhouse, look up the x402 service Saylor Innovations Data Desk and tell me whether it is worth paying: what a call costs, whether the endpoint answered when last probed, and what its payment record actually shows. curl -s 'https://api.roundhouseai.io/v0/endpoints?q=Saylor%20Innovations%20Data%20Desk' curl -s 'https://api.roundhouseai.io/v0/merchants/<the payTo wallet returned above>' Then call it: read the price from the live 402 at https://saylorinnovations.com/api/design/palette, never from a cached figure, and pay with an x402 client. The /v0 API needs an API key (`authorization: Bearer rh_live_…`) on everything except /v0/unified* and /v0/endpoints. Either pay over x402 (mint a personal key for $0.01 at GET https://api.roundhouseai.io/v0/test/x402), or ask me for an organization key, which I create at https://roundhouseai.io/dashboard/connections. If you have neither, ask before going further. If you do not have Roundhouse tools or skills installed, read https://roundhouseai.io/skill.md first — it is the whole procedure.