21. Settings Reference

TermConnect stores its settings in the tc_settings WordPress option.

Key	Type	Default	Description
expose_links_api	bool	true	When true, external links are included in REST responses when the request carries X-TermConnect. The consuming site may connect terms based on overlapping external links. When false, suppresses tc_links even for TC-aware requests.
link_types_show_see_also	bool	true	Show “See also” section on term archives
see_also_format	string	'inline'	'inline' or 'list'
see_also_label	string	'See also: '	Label prepended in inline format
max_foaf_depth	int	1	Maximum FOAF hops (0–5)
external_posts_cache_ttl	int	3600	Post list cache TTL in seconds
ht_status_cache_ttl	int	86400	Peer plugin detection cache TTL in seconds (HyperTaxonomy and TermConnect presence checks)
identity_cache_ttl	int	86400	Delegated identity refresh interval in seconds
auto_accept_redirects	bool	false	Automatically accept simple identity source redirects without queuing for review
auto_accept_chain_redirects	bool	false	Automatically follow chain redirects when refreshing delegated identity
identity_chain_max_depth	int	3	Maximum chain depth when following identity redirects (1–5)
allow_suggested_links	bool	false	Show suggestion form on term archive pages
suggested_link_label	string	'Suggest a related concept'	Label shown above the suggestion form
suggested_link_notifications	bool	true	Email admin when a suggestion is submitted
delete_on_uninstall	bool	false	Delete all term link and delegated identity data, and visitor link suggestions, when the plugin is uninstalled (settings, scheduled tasks and caches are always removed)
external_site_blacklist	string[]	[]	Blocked domains

Enabled taxonomies are stored separately in tc_enabled_taxonomies as a flat array of taxonomy slugs. Link type definitions are stored in tc_link_types. Shared Vocabularies source configs are stored in tc_shared_vocabularies. The delegated identity redirect review queue is stored in tc_identity_redirect_queue.