ZestyAPI is a JavaScript wrapper for the public API on e621.net.
It can be used as a node package, as well as in a browser.

const E621 = ZestyAPI.connect({ userAgent: "zesty/example" });
E621.Posts.get(12345).then((result) => console.log(result));

Usage

ZestyAPI is instantiated via the connect() method. An object will be returned, through which endpoints can be accessed.

Options

Option	Type	Default	Required	Notes
userAgent	string		yes	User-agent used for requests to the API. Required.
rateLimit	number	500	no	How quickly requests can be sent (ms). 500 minimum.
domain	string	https://e621.net	no	Base for building API requests. Must be a valid URL.
debug	boolean	false	no	Enables debug messages in the log.

User-Agent

Note that a custom userAgent is required by the e621 API for all requests.

Please, pick a descriptive User-Agent for your project.
You are encouraged to include your e621 username so that you may be contacted if your project causes problems.
Do NOT impersonate a browser user agent, as this will result in you being blocked.
An example user-agent would be MyProject/1.0 (by username on e621).

Authentication

When used in a browser on e621.net, you may use the CSRF token available throw a meta-tag in order to authenticate.
Otherwise, you may need to use the username / api key pair.

Authentication is done by calling a <instance>.login() method, and passing the credentials to it.
CSRF token may be passed as-is:

const E621 = ZestyAPI.connect({ userAgent: "zesty/example" });
E621.login("your-csrf-token-here");

Meanwhile, the username / key pair must be passed as an object:

const E621 = ZestyAPI.connect({ userAgent: "zesty/example" });
E621.login({
    username: YourUsername,
    apiKey: YourAPIKey
});