Matrix multiply, determinant, inverse, rank, linear solve, eigenvalues, vector ops, least squares and transforms.
payments ON MAINNET (real money) · 10 live endpoints
| Endpoint | Price | What it answers |
|---|---|---|
GET /determinant | $0.02 | Determinant of a square matrix (up to 10x10) by LU with partial pivoting, flagging a numerically singular matrix. |
GET /eigen | $0.02 | Eigenvalues and eigenvectors of a 2x2 matrix (closed form) or a symmetric matrix up to 10x10 (Jacobi). |
GET /inverse | $0.02 | Inverse of a square matrix (up to 10x10) by Gauss-Jordan, with A*inv(A) residual and a condition number. |
GET /least-squares | $0.02 | Least-squares line or polynomial fit (degree 1 to 6, up to 100 points) with coefficients, R-squared and residuals. |
GET /matrix-multiply | $0.02 | Multiply two matrices (up to 10x10) given as JSON, with shape check and the product matrix. |
GET /rank | $0.02 | Rank, nullity and reduced row echelon form of a matrix (up to 10x10) with pivot columns. |
GET /solve | $0.02 | Solve Ax=b (n up to 10) by Gaussian elimination with partial pivoting; flags singular and ill-conditioned systems. |
GET /transform-compose | $0.02 | Compose 2D or 3D rotate, scale and translate steps into one homogeneous matrix, optionally applied to a point. |
GET /transpose | $0.02 | Transpose a matrix (up to 10x10) with trace, symmetry and skew-symmetry flags, and Frobenius and 1-norms. |
GET /vector-ops | $0.02 | Vector dot, cross, norm, angle, projection, unit vector and distance for vectors of up to 100 entries. |
GET /catalog returns this list as JSON. Activity hub · uptime.
Educational numerical arithmetic computed locally on the numbers you supply, in 64-bit floating point, provided as is. Results carry rounding error, the condition number reported is what tells you how far to trust a solve or inverse, and rank and singularity are decided with a stated tolerance. Not engineering, safety or scientific certification. Every paid response carries a disclaimer field.