Build on Jellyn

Make Jellyn do more for your server. Your own slash commands and systems, events from your ER:LC server, and words that fill themselves in.

You don't need to run any code to build on Jellyn. Everything here is set up on the website and runs on Jellyn's side.

Jellyn Lab

Build your server's own slash commands, buttons and systems out of blocks on a canvas.

ER:LC webhooks

Send your private server's events to Jellyn the moment they happen.

Placeholders

Every {word} Jellyn fills in, in posts, warnings and Lab blocks.

Use the docs with AI

These docs as Markdown and llms.txt, for ChatGPT, Claude and your own tools.

How Jellyn runs your systems

How it fits together

Your Discord server ──▶ Jellyn bot ──▶ Jellyn Lab systems ──▶ messages, roles, in-game commands
Your ER:LC server ──▶ events webhook / ER:LC API ──▶ automations, logs, Lab triggers
The dashboard ──▶ settings, rules and systems you save

Systems run on Jellyn. Jellyn Lab systems, automations and game features run on Jellyn's servers, with your server's own limits. Nothing runs on your computer, and no system can reach another server.
One server only. Every block acts in the system's own Discord server and its linked ER:LC servers. There is no way to point a system at another server, by design.
Safe by default. Lab turns off mentions in everything it sends, never gives roles with Administrator or above its own, and never runs rank changes or commands on everyone at once in game.

A public API

Jellyn doesn't have a public API or developer tokens yet. The website talks to its own API for its pages, signed in as you; that API isn't a stable contract and changes without notice. Build with Jellyn Lab and webhooks instead.