x402 census · ppu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.aws · 13fe4930d3cd · JSON

POST /matrixOperations

unprobed

Matrix operations: multiply, transpose, determinant, and invert, for matrices up to 20x20. Uses the ml-matrix library's LU decomposition (LuDecomposition) for determinant and inversion, with a numerical near-singularity guard beyond the library's exact-singular check.

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://ppu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.aws/matrixOperations

Method POST

Price $0.01 USDC = 10000 atomic units of 0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913

Network eip155:8453 (base); also accepts solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp

payTo 0x548eFd4f4d4A5C3669dbb4CBB2B1A637FeeEc5F6

Seller ppu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.aws

Catalogs cdp (row updated 2026-09-29)

Listed since (lower bound) 2026-09-29 (earliest catalog timestamp; catalogs report last-update times only)

Last catalog update 2026-09-29

CDP quality counters 1 calls and 1 unique payers in 30 days, last call 2026-09-29 (catalog-reported, not verified on chain)

Category (keyword rule) other/unknown

Templated path no

x402Version in catalog 2

Service name / tags Sindri · matrix operations, linear algebra, matrix math

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 3

Payments 4

USDC volume $0.04

Median payment $0.01

First / last payment 2026-08-30 / 2026-09-17

Sampler-shaped share of payments 100.0%

Payers that are not samplers 0

Source forensics-2026-09-30

Address 0x548eFd4f4d4A5C3669dbb4CBB2B1A637FeeEc5F6

Declared input and output (extensions.bazaar)

{
 "input": {
  "body": {
   "matrixA": [
    [
     1,
     2
    ],
    [
     3,
     4
    ]
   ],
   "matrixB": [
    [
     5,
     6
    ],
    [
     7,
     8
    ]
   ],
   "operation": "multiply"
  },
  "bodyType": "json",
  "method": "POST",
  "type": "http"
 },
 "output": {
  "type": "json",
  "example": {
   "data": {
    "params": {
     "matrixA": [
      [
       1,
       2
      ],
      [
       3,
       4
      ]
     ],
     "matrixB": [
      [
       5,
       6
      ],
      [
       7,
       8
      ]
     ],
     "operation": "multiply"
    },
    "result": [
     [
      19,
      22
     ],
     [
      43,
      50
     ]
    ]
   },
   "ok": true
  }
 }
}

Try it (unpaid: shows the 402)

curl -si -X POST 'https://ppu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.aws/matrixOperations' -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/13fe4930d3cd/probe.json re-runs this probe right now for $0.01 and writes the result here. POST https://bazaar.agentexchange.work/featured with {"id":"13fe4930d3cd"} 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 ppu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.aws.