Vector scale

vector-scale · version 1.0.0 · Vectors & matrices · free, no key needed

Multiply every entry of a finite-number vector by a scalar.

Use when you need to: vector scalar multiplication · scale a vector · multiply vector by number.

Supported

• vector scalar multiplication
• scale a vector
• multiply vector by number

Not supported

• complex-valued scalars
• arbitrary-precision arithmetic

Behavior

• Input vector is an array of 1 to 64 finite JSON numbers, each bounded to at most 1000000 in magnitude.
• Input scalar is a finite JSON number bounded to at most 1000000 in magnitude.
• The result is the elementwise IEEE-754 double-precision product result[i] = vector[i] * scalar.
• A result entry of -0 is normalized to 0.

Input

• vector (array of number, required): min items 1; max items 64
• scalar (number, required)

Output

• result (array of number, required)

Limits

• max dim: 64
• max abs value: 1000000

Example

Request input:

{
  "vector": [
    1,
    2,
    3
  ],
  "scalar": 2
}

Response:

{
  "result": {
    "result": [
      2,
      4,
      6
    ]
  }
}

How to call it

MCP

Connect https://computefirst.net/mcp (setup), then call execute with:

{
  "id": "vector-scale",
  "version": "1.0.0",
  "input": {
    "vector": [
      1,
      2,
      3
    ],
    "scalar": 2
  }
}

HTTP (no key)

curl -X POST https://computefirst.net/v1/tools/vector-scale/versions/1.0.0/execute \
  -H "Content-Type: application/json" \
  -d '{"vector":[1,2,3],"scalar":2}'

The machine-readable contract is at /v1/tools/vector-scale/versions/1.0.0.

CLI

node cli.mjs run vector-scale 1.0.0 --input input.json --base-url https://computefirst.net

Get the client at /clients/cli/.

Related tools

• Matrix scale: Multiply every entry of a finite-number matrix by a scalar.
• Matrix vector multiply: Multiply an MxN finite-number matrix by a length-N finite-number vector, producing a length-M vector.
• Matrix multiply: Multiply an MxK finite-number matrix by a KxN finite-number matrix, producing an MxN matrix.
• Vector dot: Compute the dot (scalar) product of two equal-length finite-number vectors.
• Vector hadamard: Multiply two equal-length finite-number vectors elementwise (Hadamard product).
• Vector projection: Compute the vector projection of a finite-number vector onto another.