Getting Started

This guide walks you through making your first requests to the Waifu.im API.

Making Your First Request

The simplest way to use the API is to fetch random images. No authentication is required for basic usage.

Fetch a Random Image

curl https://api.waifu.im/images

This returns a JSON response with paginated image data:

{
  "items": [
    {
      "id": 6758,
      "perceptualHash": "0000000000000000",
      "extension": ".png",
      "dominantColor": "#eee6eb",
      "source": "https://www.pixiv.net/en/artworks/81300646",
      "artists": [
        {
          "id": 838,
          "name": "ネコサン＠お仕事募集中",
          "patreon": null,
          "pixiv": "https://www.pixiv.net/users/544561",
          "twitter": "https://twitter.com/neko__san",
          "deviantArt": null,
          "reviewStatus": "Accepted",
          "imageCount": 0
        }
      ],
      "uploaderId": null,
      "uploadedAt": "2021-11-02T11:16:19.048684Z",
      "isNsfw": false,
      "isAnimated": false,
      "width": 1600,
      "height": 2088,
      "byteSize": 1778623,
      "url": "https://cdn.waifu.im/6758.png",
      "tags": [
        {
          "id": 7,
          "name": "oppai",
          "slug": "oppai",
          "description": "Large-breasted women",
          "reviewStatus": "Accepted",
          "imageCount": 0
        }
      ],
      "reviewStatus": "Accepted",
      "favorites": 20,
      "likedAt": null,
      "addedToAlbumAt": null,
      "albums": []
    }
  ],
  "pageNumber": 1,
  "totalPages": 1,
  "totalCount": 1,
  "hasPreviousPage": false,
  "hasNextPage": false,
  "maxPageSize": -1,
  "defaultPageSize": 1
}

Filter by Tags

Include images matching specific tags using IncludedTags (AND logic -- all tags must match):

curl "https://api.waifu.im/images?IncludedTags=waifu"

Exclude images with certain tags using ExcludedTags (OR logic -- any match is excluded):

curl "https://api.waifu.im/images?ExcludedTags=maid"

Pagination

Control pagination with Page and PageSize:

curl "https://api.waifu.im/images?PageSize=10&Page=1"

NSFW Content

By default, only SFW images are returned (IsNsfw=False). The parameter accepts three values: False, True, and All.

# NSFW images only
curl "https://api.waifu.im/images?IsNsfw=True"

# Both SFW and NSFW images
curl "https://api.waifu.im/images?IsNsfw=All"

See the Tags page for more details on how tags and NSFW filtering interact.

Filter by Artist

You can filter images by artist ID using IncludedArtists:

curl "https://api.waifu.im/images?IncludedArtists=123"

Consult the API Reference for the full list of available filters (orientation, resolution, file size, animation, and more).

Available Tags

To see all available tags:

curl https://api.waifu.im/tags

The me and favorites Aliases

When authenticated, you can use me as a user ID alias to refer to yourself, and favorites as an album ID alias to refer to your default favorites album. These aliases simplify common operations:

# Get your own profile
curl -H "X-Api-Key: YOUR_API_KEY" https://api.waifu.im/users/me

# List your favorites
curl -H "X-Api-Key: YOUR_API_KEY" https://api.waifu.im/users/me/albums/favorites

# Add an image to your favorites
curl -X POST -H "X-Api-Key: YOUR_API_KEY" \
  "https://api.waifu.im/users/me/albums/favorites?ImageId=8008"

Code Examples

cURL

curl "https://api.waifu.im/images?IncludedTags=waifu"

JavaScript

const response = await fetch("https://api.waifu.im/images?IncludedTags=waifu");
const data = await response.json();
console.log(data.items[0].url);

Python

import requests

response = requests.get(
    "https://api.waifu.im/images",
    params={"IncludedTags": "waifu"}
)
data = response.json()
print(data["items"][0]["url"])

C#

using var client = new HttpClient();
var response = await client.GetAsync("https://api.waifu.im/images?IncludedTags=waifu");
var json = await response.Content.ReadAsStringAsync();
Console.WriteLine(json);