B008 · capability layer · retain stage

Notifications and delivery preferences

Deliver in-app, email and other notifications with user-level controls.

3User surfaces

1Capability families

2Source edges

5Composition recipes

Claim ceilingThis is a source-backed decomposition record. It is not a packaged, booted, host-mounted, qualified or admitted block.task-graph/block-hub/block-register.json#B008

Surfaces and ownership outcome

User-facing surfaces

notification centre
preference editor
delivery status

Capability family joins

U43 · Notification delivery

Recorded source candidates

The source edges below preserve the canonical register ordering and discovery verdict. They are candidate evidence, not runtime proof.

knadh/listmonk ↗SRC-0004

Current research verdict: local runtime precedent with production gates. Priority score 132.

Source-registry discovery evidence · NOT_QUALIFIED · NOT_ADMITTED

novuhq/novu ↗SRC-0085

Current research verdict: deeper evidence candidate. Priority score 22.

Source-registry discovery evidence · NOT_QUALIFIED · NOT_ADMITTED

Inspect 2 canonical source edges

Rank	Source ID	Repository	Verdict	Priority
1	SRC-0004	knadh/listmonk	local runtime precedent with production gates	132
2	SRC-0085	novuhq/novu	deeper evidence candidate	22

Composition relationships

31 blocks

Digital Business OS

The horizontal operating foundation reused across all business models.

Blocks in this recipe

B001 B002 B003 B004 B005 B006 B007 B008 B009 B010 B011 B012 B013 B014 B015 B016 B017 B018 B019 B020 B021 B022 B023 B024 B025 B026 B027 B028 B029 B030 B031

45 blocks

SaaS OS

Digital product acquisition, subscription access, activation, operations, support and retention.

Blocks in this recipe

B001 B002 B003 B004 B005 B006 B007 B008 B009 B010 B011 B012 B013 B014 B015 B016 B017 B018 B019 B020 B021 B022 B023 B024 B025 B026 B027 B028 B029 B030 B031 B032 B033 B034 B035 B036 B037 B038 B039 B040 B041 B042 B043 B044 B077

50 blocks

Ecommerce OS

Digital acquisition plus catalogue, checkout, order, inventory, fulfilment and post-purchase operations.

Blocks in this recipe

48 blocks

Marketing Agency OS

Client acquisition, briefs, production, approval, publishing, reporting and retainer economics.

Blocks in this recipe

B001 B002 B003 B004 B005 B006 B007 B008 B009 B010 B011 B012 B013 B014 B015 B016 B017 B018 B019 B020 B021 B022 B023 B024 B025 B026 B027 B028 B029 B030 B031 B032 B033 B037 B038 B040 B058 B059 B060 B061 B062 B063 B064 B065 B066 B067 B068 B069

50 blocks

Course Creator OS

Audience acquisition, paid access, learning delivery, community, progress and retention.

Blocks in this recipe

Associated research and next paths

Sources: task-graph/block-hub/block-register.json · task-graph/block-hub/block-source-edges.jsonl · task-graph/block-hub/composition-recipes.json