aioe621 0.8.0

A simple asynchronous httpx+pydantic wrapper over the E621's API

aioe621

A simple asynchronous httpx+pydantic wrapper over the e621 API.

The library API is considered unstable until version 1.0.0. Minor releases may include breaking changes.

Quickstart

from aioe621 import Client
from aioe621.schemas.posts import Post
import asyncio

# a user agent is required
client = Client(user_agent="MyProject/1.0 (by username on e621)")


async def main() -> None:
    post: Post = await client.posts.get(5937863)
    print(f"i love {post.tags.artist[0]}!!!")


asyncio.run(main())

Installation

pip install aioe621

or using uv (recommended):

uv add aioe621

TagSet

TagSet is a small query-building helper around e621's tag syntax. It behaves mostly like a normal set[str], but adds convenient methods for composing searches.

Using TagSet is not required. All endpoints that accept tags also work with other "Tag"-like or "Tag list"-like types (including plain strings and iterables of strings). TagSet is provided as a convenience for building, combining, and reusing complex queries.

Build searches fluently

# find posts by the same artists, but include a specific feature
query = post.tags.artist.with_tag("tail")
print(str(query))  # cool_artist tail
posts = await client.posts.list(tags=query)

Exclude tags

Negated tags are useful for filtering out things you don't want:

# with the same species, but no humans
# each list item here is like a blacklist line in e621
query = post.tags.species.with_blacklist(["human"])
# or you could just do .with_tag("-human")

Which for a post of a dog with a cat produces the equivalent of canine feline -human

Combine tag groups

Tag groups can be merged together:

# search for the characters of the specific artists and copyrights
query = post.tags.character + post.tags.species + post.tags.copyright

Build reusable search presets

Because TagSet is composable, you can keep common searches around:

from aioe621.objects import TagSet
from aioe621.enums import PostRating

anthro_pups_with_fangs = TagSet({"fangs", "canine", "-feral"})
rating = PostRating.SAFE  # just "s" or "safe" also works!

favorites = anthro_pups_with_fangs.with_rating(rating)

All TagSet methods

Method	Purpose
+	Combine tag groups
with_tag()	Add a tag
with_tags()	Add multiple tags
with_blacklist()	Add and negate lists of TagSet, like the e621 blacklist
negate()	Negate tags
with_order()	Add search ordering
with_rating()	Add search rating
flatten()	Flatten into a str

Schema helpers

Some schema objects provide small helper methods that use the attached client to fetch related resources.

Post

# get posts that have this post as their parent
children: Sequence[Post] = await post.fetch_children()

# get the parent if it has one
parent: Post | None = await post.fetch_parent()

Pool

pool = await client.pools.get(12345)

# this is only the ids
print(pool.post_ids)  # [69420, 42069, ...]

# fetch the full Post objects
posts: list[Post] = await pool.fetch_posts()

print(posts[0].rating)  # PostRating.EXPLICIT

Currently implemented API endpoints

e621 API	aioe621
GET /posts.json	.posts.list
GET /posts/{id}.json	.posts.get
GET /posts/random.json	.posts.random
GET /tags.json	.tags.list and tags.get_by_name
GET /tags/{id}.json	.tags.get
GET /pools.json	.pools.list
GET /pools/{id}.json	.pools.get