x402 census · 402utils.com · ef572ca96910 · JSON

POST /v1/diff

gone

Compute the diff between two texts (a → b) — no git needed. Returns a standard unified patch (line-oriented in both modes, applies with git apply or patch), added/removed counts, and in word mode a token-level change list for inline highlighting (capped at 2000 entries). CRLF line endings and missing trailing newlines are preserved byte-exactly. Caps: 1 MB UTF-8 per input; pathologically divergen…

Verdict: dead listing. 404/410: gone (was unprobed in the census).

Facts from the catalogs

Field Value

URL https://402utils.com/v1/diff

Method POST

Price $0.002 USDC = 2000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Network eip155:8453 (base)

payTo 0xc55A2D530b53CBaD1001e4AfD4720B7E71f9C291

Seller 402utils.com

Catalogs cdp (row updated 2026-09-18)

Listed since (lower bound) 2026-09-18 (earliest catalog timestamp; catalogs report last-update times only)

Last catalog update 2026-09-18

CDP quality counters 1 calls and 1 unique payers in 30 days, last call 2026-09-18 (catalog-reported, not verified on chain)

Category (keyword rule) other/unknown

Templated path no

x402Version in catalog 2

Service name / tags none

Unpaid probe (census of )

Field

Value

Probe

not probed in this build

Latest re-probe

Field

Value

Re-probed at

2026-10-01T08:13:42.000Z (cron)

Verdict now

gone changed from unprobed

HEAD / GET

404 / 404

accepts[0]

none

Live amount equals catalog price

not comparable

Latency

1,841 ms

Error

none

On-chain facts for the payTo (public address)

Field Value

Distinct payers 43

Payments 69

USDC volume $0.17

Median payment $0.002

First / last payment 2026-07-05 / 2026-09-30

Sampler-shaped share of payments 100.0%

Payers that are not samplers 0

Source forensics-2026-09-30

Address 0xc55A2D530b53CBaD1001e4AfD4720B7E71f9C291 (contract: EIP7702Proxy)

Declared input and output (extensions.bazaar)

{
 "input": {
  "body": {
   "a": "name: farm\nprice: 1 USDC\n",
   "b": "name: farm\nprice: 2 USDC\n"
  },
  "bodyType": "json",
  "method": "POST",
  "type": "http"
 },
 "output": {
  "type": "json",
  "example": {
   "identical": false,
   "mode": "line",
   "patch": "===================================================================\n--- a\n+++ b\n@@ -1,2 +1,2 @@\n name: farm\n-price: 1 USDC\n+price: 2 USDC\n",
   "stats": {
    "added": 1,
    "removed": 1
   }
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X POST 'https://402utils.com/v1/diff' -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/ef572ca96910/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"ef572ca96910"} 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 402utils.com.