Cats API

Overview

Measurement Record

What actually happened when we called this API from our own infrastructure. Every value below was recorded by the request, not copied from the provider's documentation.

Request

GET https://api.thecatapi.com/v1/images/search?limit=1

Result

HTTP 200 · application/json · 117 bytes · compressed

Response time

366 ms (median of 3) · fastest 326 ms

Transport

TLSv1.3 · TLS_AES_256_GCM_SHA384 · certificate issued by Google Trust Services

Browser CORS

Allowed — Access-Control-Allow-Origin: *

Served by

cloudflare

Answered

8 of 8 weekly checks (100%, since 2026-07-31)

Recorded

2026-09-21

Fields Returned

Top-level fields present in the response we captured, with the type and value we actually received.

Captured Response

Captured from a real request to https://api.thecatapi.com/v1/images/search?limit=1 on 2026-09-21. Long arrays and nested objects are truncated to keep the shape readable.

[
  {
    "id": "a0p",
    "url": "https://s3.us-west-2.amazonaws.com/cdn2.thecatapi.com/images/a0p.jpg",
    "width": 1024,
    "height": 909
  }
]

Implementation Example

Calls a real endpoint of this API. Replace any placeholder credentials with your own key.

const url = "https://docs.thecatapi.com/";
// Replace headers or query params with the values required by this API.
const response = await fetch(url, {
  headers: {
  "X-API-Key": "YOUR_API_KEY"
  }
});
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data);

import requests

url = "https://docs.thecatapi.com/"
headers = {"X-API-Key": "YOUR_API_KEY"}

response = requests.get(url, headers=headers, timeout=30)
response.raise_for_status()
data = response.json()
print(data)

curl -H "x-api-key: YOUR_API_KEY" "https://api.thecatapi.com/v1/images/search?limit=1"

What Can You Build?

// Fetch random cats data and display it
const headers = { 'X-Api-Key': 'YOUR_API_KEY' };
const response = await fetch(`https://docs.thecatapi.com`, { headers });
const data = await response.json();
console.log('Cats result:', data);
// Display in your UI
document.getElementById('animal-display').innerHTML = 
  JSON.stringify(data, null, 2);

// Fetch multiple entries from Cats
const headers = { 'X-Api-Key': 'YOUR_API_KEY' };
const response = await fetch(`https://docs.thecatapi.com`, { headers });
const data = await response.json();
const items = Array.isArray(data) ? data : [data];
items.forEach(item => {
  const div = document.createElement('div');
  div.textContent = JSON.stringify(item);
  document.getElementById('gallery').appendChild(div);
});

// Get daily content from Cats
const headers = { 'X-Api-Key': 'YOUR_API_KEY' };
async function getDailyFact() {
  const response = await fetch(`https://docs.thecatapi.com`, { headers });
  const data = await response.json();
  return data;
}
const fact = await getDailyFact();
console.log('Today\'s cats fact:', fact);

Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.

How This API Fails

We deliberately sent this API a broken request and recorded exactly what came back on 2026-09-21. Knowing the shape of an error before you hit it makes error handling much easier to write.

{
  "statusCode": 404,
  "timestamp": "2026-09-21T19:40:29.373Z",
  "path": "/v1/images/search/apisscore-nonexistent-path?limit=1",
  "message": "Cannot GET /v1/images/search/apisscore-nonexistent-path?limit=1",
  "error": "Not Found"
}

{
  "statusCode": 400,
  "timestamp": "2026-09-21T19:40:29.709Z",
  "path": "/v1/images/search?limit=!!!invalid!!!",
  "message": [
    "limit must not be greater than 100",
    "limit must not be less than 1",
    "limit must be an integer number"
  ],
  "error": "Bad Request"
}

Common Errors & Troubleshooting

Generated guidance based on this API's documentation, not observed by us. Treat it as a starting point and check against the provider's own error reference.