x402 census · keyronne.com · 8fd7d05c3d6c · JSON

POST /api/color

unprobed

Parse any CSS color (hex, rgb(), hsl()) and emit all three formats plus relative luminance. Compute WCAG contrast ratios against a background with AA/AAA pass-fail for normal and large text, and lighten, darken, or mix colors. Built for agents generating accessible UI themes. POST a JSON body like: {"color":"#3498db","background":"#ffffff"}

Verdict: not verified by an unpaid GET. not probed yet. This says nothing about whether the route works when called as declared.

Facts from the catalogs

Field Value

URL https://keyronne.com/api/color

Method POST

Price $0.001 USDC = 1000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Network eip155:8453 (base)

payTo 0xB86F95EF5FA904318Ea9Df3b59AdCe099b478fC4

Seller keyronne.com

Catalogs cdp (row updated 2026-09-17)

Listed since (lower bound) 2026-09-17 (earliest catalog timestamp; catalogs report last-update times only)

Last catalog update 2026-09-17

CDP quality counters 4 calls and 3 unique payers in 30 days, last call 2026-09-17 (catalog-reported, not verified on chain)

Category (keyword rule) dev-tools/utilities

Templated path no

x402Version in catalog 2

Service name / tags Color Convert + Contrast · color, hex, rgb, wcag, contrast

Unpaid probe (census of )

Field

Value

Probe

not probed in this build

No hourly re-probe has reached this resource yet; the cron covers a rotating slice of 150 per hour.

On-chain facts for the payTo (public address)

Field Value

Distinct payers 62

Payments 127

USDC volume $0.46

Median payment $0.005

First / last payment 2026-07-07 / 2026-09-25

Sampler-shaped share of payments 98.4%

Payers that are not samplers 2

Source forensics-2026-09-30

Address 0xB86F95EF5FA904318Ea9Df3b59AdCe099b478fC4 (contract: EIP7702StatelessDeleGator)

Declared input and output (extensions.bazaar)

{
 "input": {
  "body": {
   "background": "#ffffff",
   "color": "#3498db"
  },
  "bodyType": "json",
  "method": "POST",
  "type": "http"
 },
 "output": {
  "type": "json",
  "example": {
   "contrast": {
    "against": "#ffffff",
    "largeTextAA": false,
    "normalTextAA": false,
    "ratio": 2.59
   },
   "hex": "#3498db",
   "hsl": {
    "h": 204,
    "l": 53.1,
    "s": 70
   },
   "input": "#3498db",
   "luminance": 0.2831,
   "rgb": {
    "a": 1,
    "b": 219,
    "g": 152,
    "r": 52
   }
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X POST 'https://keyronne.com/api/color' -H 'accept: application/json' -H 'content-type: application/json' --data '{}'

The catalog declares POST. A 402 answer carries the payment requirements in the JSON body and, for x402 v2, base64 in the PAYMENT-REQUIRED header. This page never sends a payment.

Paid checks (x402, USDC on Base)

GET https://bazaar.agentexchange.work/r/8fd7d05c3d6c/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"8fd7d05c3d6c"} places this resource at the top of the report and search pages for 30 days for $1.00, labelled. Unpaid requests answer 402 with the terms. Pricing.

Catalog references: agentic.market (CDP Bazaar front end) · this record as JSON · all resources on keyronne.com.