Color Palette Generator API
Generate harmonious color palettes from any hex color. 5 schemes: complementary, analogous, triadic, split-complementary, tetradic. Returns hex, RGB, HSL, and CSS vars. Pay-per-call via x402 (USDC on Base L2) -- no API key, no signup, no rate-limit wall.
Part of the klymax402 marketplace -- 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.
Quickstart -- MCP
Add to your MCP client config (Claude Desktop, Cursor, ElizaOS, etc.):
{
"mcpServers": {
"color-palette": {
"url": "https://color-palette.api.klymax402.com/mcp"
}
}
}
Quickstart -- HTTP (x402)
curl -X POST "https://color-palette.api.klymax402.com/api/palette" \
-H "Content-Type: application/json" \
-d '{"color":"..."}'
# -> 402 Payment Required, with an x402 payment challenge in the response body
Any x402-aware client (@x402/fetch, x402-agent-tools, ATXP) handles the 402 -> sign -> retry cycle automatically.
Tools
design_generate_color_palette
Use this when you need to generate a harmonious color palette from a base hex color. Returns multiple color formats ready for design or code.
Parameters
Example response:
{"colors":[{"hex":"#FF5733","rgb":{"r":255,"g":87,"b":51},"hsl":{"h":11,"s":100,"l":60},"cssVar":"--color-1: #FF5733;"}],"scheme":"complementary","baseColor":"#FF5733","count":5}
When to use: building design systems, generating theme colors for websites, creating brand color guidelines, or picking accessible color combinations for UI components. Use this BEFORE starting any design project that needs a cohesive palette.
Not for: image processing (use media_extract_text_from_image), favicon generation (use utility_generate_qr_code), screenshot capture (use capture_screenshot).
Example agent prompts
- "Generate a harmonious color palette from a base hex color"
Payment
- Protocol: x402 -- HTTP-native pay-per-call, no signup, no API key
- Network: Base L2 (
eip155:8453) - Asset: USDC
- Facilitator: Coinbase CDP (primary), PayAI (fallback)
- Also reachable via ATXP (OAuth-wrapped x402, RFC 9728 protected-resource metadata)
Part of klymax402
100 x402 micropayment APIs for AI agents -- one wallet, USDC on Base, zero signup.
- Catalog: https://klymax402.com/llms.txt
- Full API reference: https://klymax402.com/llms-full.txt
- Live stats: https://klymax402.com/stats
License
MIT