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Solve Linear Equation

by Sindri in Productivity & SaaS

x402 APIPassing, checked 4 h ago

Solves a system of linear equations (Ax = b) using the ml-matrix library's LU decomposition (LuDecomposition), with a near-singularity guard beyond the library's exact-singular check, for systems up to 20x20.

POST https://ppu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.aws/solveLinearEquation

Last 30 days

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Uptime
100%
Response time
124 ms typical, 124 ms slowest 5%
Last check
4 h ago
Next check
any minute now

How to call it

# See the payment challenge (nothing is charged)
curl -i -X POST "https://ppu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.aws/solveLinearEquation" \
  -H "content-type: application/json" \
  -d '{"coefficients":[[1,1],[1,-1]],"constants":[3,1]}'
import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { ExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client().register(
  "eip155:8453",
  new ExactEvmScheme(privateKeyToAccount(process.env.AGENT_KEY)),
);
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? Preflight it first for $0.005:
// GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fppu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.aws%2FsolveLinearEquation
const res = await pay("https://ppu43fkyhimq5fiqpmo42eh5ri0yypid.lambda-url.us-east-1.on.aws/solveLinearEquation", {
  method: "POST",
  headers: { "content-type": "application/json" },
  body: JSON.stringify({"coefficients":[[1,1],[1,-1]],"constants":[3,1]}),
});
console.log(await res.json());

Example input

{
  "coefficients": [
    [
      1,
      1
    ],
    [
      1,
      -1
    ]
  ],
  "constants": [
    3,
    1
  ]
}

Example output

{
  "data": {
    "params": {
      "coefficients": [
        [
          1,
          1
        ],
        [
          1,
          -1
        ]
      ],
      "constants": [
        3,
        1
      ]
    },
    "solution": [
      2,
      1
    ]
  },
  "ok": true
}

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Recent checks

WhenResultHTTPTimePrice
4 h agoPassed402124 ms$0.01