Limits and Benchmarks

This page lists CollabKit limits and benchmark targets for the latest version.

Rate Limits for APIs

When rate limits are exceeded, APIs may return 429 Too Many Requests.

Limit	Value
General REST API	600 requests/minute per account, burst 120 requests/10 seconds
Create user	120 requests/minute per account, burst 30 requests/10 seconds per room
Create room	60 requests/minute per account
List endpoints	300 requests/minute per account
Storage upload	20 uploads/minute per user, 100 uploads/minute per room
Storage delete	60 deletes/minute per user
Storage list files	60 requests/minute per user
Webhook/workflow CRUD	60 requests/minute per account
Auth/login routes	10 requests/minute per IP
List users page size	100 users per page

CollabKit Store Limits

Limit	Value
Stores per room	10
Writes to store	1 write per 250ms
Store size	`TBD`

Each named store counts toward the per-room store limit. Store entries, document shape, and payload-size limits are TBD.

Comment Limits

Limit	Value
Top-level comments per room	1,000
Comment payload size	`TBD`

Replies are limited to one level of nesting. A top-level comment can have replies, but replies cannot have nested replies.

File Storage Limits

Limit	Value
File size	1 MB per file
Per-room storage quota	5 GB
Files per room	1,000
Upload rate	20 uploads/minute per user, 100 uploads/minute per room
Delete rate	60 deletes/minute per user
List files rate	60 requests/minute per user

Files are scoped to rooms. Storage rate limits are enforced per Worker isolate for now.

Room Limits

Users can join a room with two roles: editor | viewer.

Scenario	Limit or target
Maximum users in one room	1,000 users with up to 200 active editors
Maximum users in an all-editor room	500 active users, all editors
Concurrent joins and time SLA	1.5sec (P50), 3sec (P95)

Editors:
- Allowed to mutate stores, files, add comments and more.
- Use for users who actively mutate room state, stores, comments, storage, broadcasts, or CRDT documents.
Viewers:
- Allowed to subscribe to all the changes in a room, including presence, stores, comments, files and more.
- Use for users who need real-time updates but do not need to write collaborative state

Webhook/Workflow Delivery SLAs

System	SLA
WebSocket event delivery	5-30 seconds after the event
Analytics availability	30 seconds after the event

WebSocket SLAs describe when connected clients should receive room events after the server processes the event. Analytics SLAs describe when event data should be available for querying or display.

​Rate Limits for APIs

​CollabKit Store Limits

​Comment Limits

​File Storage Limits

​Room Limits

​Webhook/Workflow Delivery SLAs

Rate Limits for APIs

CollabKit Store Limits

Comment Limits

File Storage Limits

Room Limits

Webhook/Workflow Delivery SLAs