NekosBest
★ Only Publicly Available OpenAPI DocumentMediaImage Processingnone2 EndpointsREST
For Agents
Fetch random anime images and reaction GIFs across categories like neko, waifu, hug, and pat from a free, no-auth public API.
Use for: I need to fetch a random neko image, Get a hug reaction GIF for a chat bot reply, List all NekosBest categories, Retrieve five random waifu images at once
Not supported: Does not generate new images, host user uploads, or moderate content — use for fetching curated anime images and reaction GIFs only.
Jentic publishes the only available OpenAPI specification for NekosBest, keeping it validated and agent-ready. NekosBest is a free anime image and GIF API offering high-quality assets across multiple categories including neko, kitsune, waifu, husbando, and a wide range of reaction GIFs such as hug, kiss, pat, and slap. The 2 endpoints expose a category list and a randomised image fetch, so a single GET against /endpoints discovers the available categories and a GET to /{category} returns one or more random images with source attribution.
Install Jentic One Beta
Connect the NekosBest to your agent
Jentic One is a self-hosted execution layer for AI agents. It lets your agent call the NekosBest, or any other public or private API you need. You set the rules, the agent never sees your credentials, and every call is logged.
Two steps, two machines. Install the instance in a safe environment, then register your agent from wherever it runs.
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Step 1: Jentic One Host machine
# On the machine that will host your Jentic One instance:
curl -fsSL https://raw.githubusercontent.com/jentic/jentic-one/main/tools/install.sh | sh2
Step 2: Agent machine
# On the machine where your agent runs (keep this separate from the instance):
curl -fsSL https://raw.githubusercontent.com/jentic/jentic-one/main/tools/install.sh | sh
jentic register # connects your agent to your Jentic One instanceJentic One is in public beta. The setup above keeps your agent separate from the instance, which is what you want before using real credentials: an agent running as the same OS user as Jentic One can read its stored keys directly. Just evaluating? A single local install is fine to start. See the secure deployment guide for the tiers.
Capabilities
What an agent can do with NekosBest API.
List all available image and GIF categories via GET /endpoints
Fetch a random anime image from a chosen category via GET /{category}
Request multiple images in a single call using the amount query parameter on /{category}
Receive source artist and post URL metadata alongside each returned asset
Switch between still image and reaction GIF categories using the category path
Cache the /endpoints response to avoid re-listing the category set on every call
Use Cases
Patterns agents use NekosBest API for, with concrete tasks.
★ Discord Reaction Bot
A Discord bot lets users send anime-styled reaction commands like /hug @user or /pat @user by calling GET /hug or GET /pat on NekosBest and posting the returned GIF in chat. The /endpoints call seeds the bot's command list at startup. The API is free, no-auth, and CDN-backed, so the bot can serve thousands of users without managing storage or rate negotiation.
GET https://nekos.best/api/v2/hug and post the returned URL as the bot's reply to a /hug command.
Web App Avatar and Mood Pack
A community web app lets new users pick a randomised anime avatar by calling GET /neko or GET /waifu and presenting the returned URLs as a chooser. The same flow swaps in a reaction GIF for the user's mood indicator. Source attribution is preserved using the artist_href and source_url fields in the response.
GET /waifu?amount=4 and render the four returned image URLs in the avatar picker UI.
Static Site Hero Image
A fan site uses NekosBest to rotate the hero image on the homepage by calling /kitsune at build time and embedding the URL. Because the API is free and unauthenticated, the build step does not need credentials, and the source attribution shipped in the JSON satisfies the artist credit requirement on the page footer.
GET /kitsune at build time, write the returned URL into the site's homepage template, and render the artist credit from the response.
Agent-Driven Reaction Picker
A chat-assistant agent decorates its replies with reaction GIFs when the conversation calls for it, using Jentic to discover the NekosBest categories and fetch a matching GIF without manually maintaining a category map. The agent searches for the operation, loads the schema, and submits the call with the chosen category.
Search Jentic for 'fetch a NekosBest reaction GIF', load the schema for GET /{category}, and execute it with category=hug.
Key Endpoints
2 endpoints — jentic publishes the only available openapi specification for nekosbest, keeping it validated and agent-ready.
METHOD
PATH
DESCRIPTION
GET
/endpoints
List all available categories
GET
/{category}
Get random image or GIF from a category
GET
/endpoints
List all available categories
GET
/{category}
Get random image or GIF from a category
Why Jentic?
Three things that make agents converge on Jentic-routed access.
Credential isolation
NekosBest is unauthenticated, so Jentic does not store credentials for it. Calls are routed through Jentic's runtime without injecting any secret, and the agent context never references one.
Intent-based discovery
Agents search by intent such as 'fetch an anime hug GIF' and Jentic returns the matching NekosBest operation with its category schema, removing the need to read the docs site.
Time to first call
Direct NekosBest integration: under an hour to wire a single fetch call. Through Jentic: a few minutes to call /{category} with managed routing and consistent response handling alongside other APIs.
Related APIs
Alternatives and complements available in the Jentic catalogue.
FAQs
Specific to using NekosBest API through Jentic.
Why is there no official OpenAPI spec for NekosBest?
NekosBest publishes its API as a documentation site at docs.nekos.best rather than a machine-readable OpenAPI file. Jentic generates and maintains this spec so that AI agents and developers can call NekosBest via structured tooling. It is validated against the live nekos.best/api/v2 endpoints and kept up to date. Get started at https://app.jentic.com/sign-up.
What authentication does the NekosBest API use?
NekosBest is unauthenticated — no API key, bearer token, or basic-auth header is required. The OpenAPI spec declares no security scheme, and the public endpoints under nekos.best/api/v2 are accessible directly. Through Jentic the calls are routed without any credential handling.
Can I fetch multiple images in a single call?
Yes. GET /{category}?amount=N returns N random assets from that category in one response. The maximum per call is documented as 20 in the official docs; values above that are clamped or rejected by the server.
What are the rate limits for NekosBest?
NekosBest does not publish numeric per-endpoint rate limits in the OpenAPI document. The public CDN handles bursts well, but heavy continuous polling will be throttled at the network edge; back off on 429 responses and cache the /endpoints listing rather than refetching it each call.
How do I get a reaction GIF through Jentic?
Run pip install jentic, then search for 'fetch a NekosBest reaction GIF', load the schema for GET /{category}, and execute it with the desired category like hug, pat, or kiss. Jentic returns the JSON body with the asset URL and artist attribution.
Does NekosBest host arbitrary uploaded images?
No. NekosBest serves a curated catalogue of anime images and reaction GIFs aggregated by the maintainers. There is no upload endpoint and no way to add custom images via the API.
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