Collections

ArcaQ feature

§1 — What you can collect

Collections are not folders — they are typed RDF resources with named membership edges.

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Any text node can be added to one or more collections.

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Any URI in your knowledge graph can be curated into a collection.

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Files ingested into Brain Ingestion can be bookmarked in collections.

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Choose a hex color for each collection — always visually distinct in the sidebar.

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Collections view shows item counts at a glance. Click to expand members.

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Stored in <arcaq:collections/> named graph — queryable by any SPARQL client.

Six REST endpoints for the full CRUD lifecycle of collections and members.

Method	Endpoint	Description
POST	/second-brain/collections	Create a new collection
GET	/second-brain/collections	List user's collections
GET	/second-brain/collections/{id}/items	Get collection items
POST	/second-brain/collections/{id}/items	Add item to collection
DELETE	/second-brain/collections/{id}/items	Remove item from collection
DELETE	/second-brain/collections/{id}	Delete a collection