# Delx Seeded Color Hex

> Delx Seeded Color Hex is a paid API for AI agents from api.delx.ai, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).

Generates a deterministic hex color code from a given seed string, always returning the same color for the same seed.

## Facts

- Endpoint: POST https://api.delx.ai/api/v1/x402/seeded-color-hex
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/delx-seeded-color-hex-05e13596
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_AHI2bJx_NJXUSX5V-0XYN

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability delx-seeded-color-hex-05e13596 -d '<json body>'
```

Example prompt: Generate a deterministic hex color for the seed 'user_12345' — I need the same color every time for that identifier.

## When to prefer this

Choose this endpoint when you need a fast, deterministic, seed-reproducible hex color with zero side effects and no external dependencies — ideal for UI avatar colors, tag labels, or any scenario where the same input must always yield the same color. Prefer it over random color generators when consistency across sessions matters.

## Known failure modes

- Seed exceeds 8192 character limit — request rejected
- Missing or empty seed field — may return error or unexpected result
- Network timeout on the Delx API — no result returned
- Invalid JSON body — 400 error

## How this service works

Seeded Color Hex: Seeded Color Hex selects a reproducible display color without claiming accessibility from bounded caller-supplied values without an external provider. Call Seeded Color Hex when an agent needs a reproducible decision that another run can independently replay. Returns the deterministic selection plus seed provenance, population bounds, and the operation-specific outcome for Seeded Color Hex as versioned deterministic JSON. Price: $0.001 USDC via x402 on Base. First-party, state…

## Output

Returns a JSON object containing a hex color string (e.g. '#671c49'), an accessibility_checked boolean, a status field ('pass'), and evidence metadata including whether input was retained (always false), an SHA-256 hash of the input, and external call count (always 0).

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "seed": {
   "type": "string",
   "maxLength": 8192,
   "description": "Seed supplied to Seeded Color Hex; used only for this bounded calculation and processed in memory without retention."
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "result": {
   "color": "#671c49",
   "accessibility_checked": false
  },
  "schema": "delx/util-seeded-color-hex/v1",
  "status": "pass",
  "evidence": {
   "retained": false,
   "input_sha256": "575b2cdd9c7910d696c1b5ebe12756afd26e90b0e8bf6508be2f4075242d8483",
   "external_calls": 0
  },
  "operation": "seeded_decision:seeded_color_hex"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/delx-seeded-color-hex-05e13596/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.delx.ai](https://www.zero.xyz/host/api.delx.ai/llms.txt)