System settings

All keys use the reactions_ prefix in the reactions namespace.

Open: System → System Settings, filter reactions.

Main

Key	Type	Default	Description
reactions_default_set	text	updown	Set when the snippet omits &set (updown, github, full, or custom)
reactions_full_types	text	(empty)	Type subset for set=full (comma-separated names). Empty — all 24
reactions_identity_strategy	text	ip_cookie	Identity strategy: auth_only, ip, ip_cookie, session
reactions_allow_multiple	combo-boolean	No	Allow several reaction types on one object (only if the set is not exclusive)
reactions_cache_handler	text	modx	Cache handler: modx or redis

Identity strategies

Value	Behavior
auth_only	Logged-in users only. Guests get an error
ip	Fingerprint from IP hash
ip_cookie	Cookie reactions_fid (32 hex), 1 year
session	Fingerprint from PHP session ID

A logged-in user is always identified by user_id, regardless of strategy.

Example reactions_full_types:

like,love,fire,star,clap,rocket,heart_eyes

Security

Key	Type	Default	Description
reactions_rate_limit	number	10	Max reactions per time window
reactions_rate_limit_window	number	60	Rate limit window length in seconds
reactions_block_bots	combo-boolean	Yes	Reject reactions from known crawlers and bots

Integrations

Key	Type	Default	Description
reactions_webhooks_enabled	combo-boolean	No	HTTP callbacks after reaction changes
reactions_webhook_url	text	(empty)	Webhook URL (JSON compatible with Telegram / Discord / Slack)
reactions_notify_authors	combo-boolean	No	Message the resource author via modUserMessage

More: Webhooks, Events.