ToolAssay

Solve Ax=b (n up to 10) by Gaussian elimination with partial pivoting; flags sin

Solve Ax=b (n up to 10) by Gaussian elimination with partial pivoting; flags singular and ill-conditioned systems.

Answeringour last check, 2026-10-21
1 of 1checks answered this week
293 msmedian answer time
$0.02listed price per call
$0.02price it asked us

Paid test badge: not yet. The checks above are free: we call the tool without paying and read the payment request it sends back. The Verified badge needs paid calls whose answers match the promised output, and nobody can buy a badge.

Endpoint

GET https://linear-algebra.x402tookit.com/solve

CategoryEverything else
Provider hostlinear-algebra.x402tookit.com
Networkseip155:137, eip155:42161, eip155:8453, solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp
Payment schemesexact
Self-reported calls, 30 days1 from 1 payers (the provider's figure, not ours)

Our checks, last 30 days

DayResultHTTPAskedTime
2026-10-21 valid payment request 402$0.02 293 ms

Example input (from the provider)

{
  "method": "GET",
  "queryParams": {
    "A": "[[2,1,-1],[-3,-1,2],[-2,1,2]]",
    "b": "[8,-11,-3]"
  },
  "type": "http"
}

Promised output schema (from the provider)

{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "properties": {
    "input": {
      "additionalProperties": false,
      "properties": {
        "method": {
          "enum": [
            "GET"
          ],
          "type": "string"
        },
        "queryParams": {
          "properties": {
            "A": {
              "description": "Square coefficient matrix, JSON like [[2,1,-1],[-3,-1,2],[-2,1,2]] (max 10x10)",
              "type": "string"
            },
            "b": {
              "description": "Right-hand side vector, JSON like [8,-11,-3] or 8,-11,-3; same length as A has rows",
              "type": "string"
            }
          },
          "required": [
            "A",
            "b"
          ],
          "type": "object"
        },
        "type": {
          "const": "http",
          "type": "string"
        }
      },
      "required": [
        "type",
        "method"
      ],
      "type": "object"
    },
    "output": {
      "properties": {
        "example": {
          "properties": {
            "asOf": {
              "type": [
                "null",
                "string"
              ]
            },
            "conditionNumber1Norm": {
              "type": [
                "null",
                "number"
              ]
            },
            "degraded": {
              "type": [
                "boolean",
                "null"
              ]
            },
            "digitsLostEstimate": {
              "type": [
                "null",
                "number"
              ]
            },
            "disclaimer": {
              "type": [
                "null",
                "string"
              ]
            },
            "illConditioned": {
              "type": [
                "boolean",
                "null"
              ]
            },
            "maxResidual": {
              "type": [
                "null",
                "number"
              ]
            },
            "notChecked": {
              "items": {
                "type": "string"
              },
              "type": [
                "array",
                "null"
              ]
            },
            "reasons": {
              "items": {
                "type": "string"
              },
              "type": [
                "array",
                "null"
              ]
            },
            "singular": {
              "type": [
                "boolean",
                "null"
              ]
            },
            "solution": {
              "items": {
                "type": "number"
              },
              "type": [
                "array",
                "null"
              ]
            },
            "source": {
              "type": [
                "null",
                "string"
              ]
            },
            "summary": {
              "type": [
                "null",
                "string"
              ]
            },
            "verdict": {
              "type": [
                "null",
                "string"
              ]
            }
          },
          "type": "object"
        },
        "type": {
          "type": "string"
        }
      },
      "required": [
        "type"
      ],
      "type": "object"
    }
  },
  "required": [
    "input"
  ],
  "type": "object"
}

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