All constants (paginated)

Code snippets

curl "https://api.oanor.com/constants-api/v1/list" \
  -H "x-oanor-key: oanor_test_..."

await fetch("https://api.oanor.com/constants-api/v1/list", {
  headers: { "x-oanor-key": "oanor_test_..." }
});

$ch = curl_init("https://api.oanor.com/constants-api/v1/list");
curl_setopt($ch, CURLOPT_HTTPHEADER, ["x-oanor-key: oanor_test_..."]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$out = curl_exec($ch);

import requests
requests.get(
    "https://api.oanor.com/constants-api/v1/list",
    headers={"x-oanor-key": "oanor_test_..."}
)

Example response

A real response from this endpoint, captured by the latest health check.

{
    "data": {
        "count": 50,
        "limit": 50,
        "total": 355,
        "offset": 0,
        "results": [
            {
                "name": "alpha particle-electron mass ratio",
                "slug": "alpha-particle-electron-mass-ratio",
                "unit": null,
                "exact": false,
                "value": 7294.29954171,
                "value_str": "7294.299 541 71",
                "uncertainty": 1.7e-7
            },
            {
                "name": "alpha particle mass",
                "slug": "alpha-particle-mass",
                "unit": "kg",
                "exact": false,
                "value": 6.644657345e-27,
                "value_str": "6.644 657 3450 e-27",
                "uncertainty": 2.1e-36
            },
            {
                "name": "alpha particle mass energy equivalent",
                "slug": "alpha-particle-mass-energy-equivalent",
                "unit": "J",
                "exact": false,
                "value": 5.9719201997e-10,
                "value_str": "5.971 920 1997 e-10",
                "uncertainty": 1.9e-19
            },
            {
                "name": "alpha particle mass energy equivalent in MeV",
                "slug": "alpha-particle-mass-energy-equivalent-in-mev",
                "unit": "MeV",
                "exact": false,
                "value": 3727.3794118,
                "value_str": "3727.379 4118",
                "uncertainty": 1.2e-6
            },
            {
                "name": "alpha particle mass in u",
                "slug": "alpha-particle-mass-in-u",
                "unit": "u",
                "exact": false,
                "value": 4.001506179129,
                "value_str": "4.001 506 179 129",
                "uncertainty": 6.2e-11
            },
            {
                "name": "alpha particle molar mass",
                "slug": "alpha-particle-molar-mass",
                "unit": "kg mol^-1",
                "exact": false,
                "value": 0.0040015061833,
                "value_str": "4.001 506 1833 e-3",
                "uncertainty": 1.2e-12
            },
            {
                "name": "alpha particle-proton mass ratio",
                "slug": "alpha-particle-proton-mass-ratio",
                "unit": null,
                "exact": false,
                "value": 3.972599690252,
                "value_str": "3.972 599 690 252",
                "uncertainty": 7.0e-11
            },
            {
                "name": "alpha particle relative atomic mass",
                "slug": "alpha-particle-relative-atomic-mass",
                "unit": null,
                "exact": false,
                "value": 4.001506179129,
                "value_str": "4.001 506 179 129",
                "uncertainty": 6.2e-11
            },
            {
                "name": "alpha particle rms charge radius",
                "slug": "alpha-particle-rms-charge-radius",
                "unit": 
…