UI & API Endpoints — Testing Reference

This page lists all major endpoints exposed by the application for manual testing and smoke verification.

Public Frontend (Hugo static — via AppRouter)

URL	Description	Auth
`/`	Homepage — tutorial navigator (Vue 3 component)	None
`/tutorials/{slug}`	Individual tutorial (HTML served from HANA BLOB via CAP)	None
`/concepts/{slug}`	Knowledge-graph concept landing page (HTML served from HANA BLOB via CAP; 404 if slug not in PublishedConcepts)	None
`/explore/`	Interactive knowledge-graph visualization (Vue+Sigma.js, CAP-rendered shell with inline graph JSON). Mobile (<768px) falls back to typed-list view.	None
`/app-space`	Event-themed tutorial space (Vue 3 AppSpace component)	None
`/event-display`	Real-time event display dashboard launcher	None
`/missions/{slug}`	Mission detail page (generated by Hugo at build time)	None
`/groups/{slug}`	Group/completion-path detail page	None
`/me/`	Profile + Recent Activity timeline (public Hugo page; calls authenticated APIs from JS)	None (page) / XSUAA (API calls)

QA Channel — Author Preview (XSUAA-gated)

The QA channel is a separate author-preview surface backed by a dedicated CAP app (tutorials-srv-qa) and HDI container (tutorials-hana-qa). All routes require the Tutorial.Author XSUAA scope.

URL	Description	Auth
`/tutorials-qa/{slug}`	QA-channel tutorial preview (yellow "QA preview" banner injected)	XSUAA + `Tutorial.Author`
`/tutorials-qa/_nav.json`	Navigation metadata for QA-channel tutorials	XSUAA + `Tutorial.Author`
`/tutorials-qa/search/...`	QA-channel search (rewrites to `/qa/search/...`)	XSUAA + `Tutorial.Author`
`/qa-search/...`	Direct QA-search alias (rewrites to `/search/...`)	XSUAA + `Tutorial.Author`

Bootstrap: the role collection "Tutorials Author" must be assigned via BTP cockpit; users must log out / back in for the new scope to appear in their JWT. Until then, /tutorials-qa/* returns 403.

Display App (Vue 3 — Real-time Event Dashboard)

URL	Description	Auth
`/display-app/`	Standalone event dashboard (rotating views: Board, Statistics, Leaderboard)	XSUAA
`/display-app/index.html`	Direct entry point	XSUAA

The display-app is a standalone Vue 3 + Vite application deployed as static files at approuter/static/display-app/. It connects via Socket.IO on the /ws/display namespace for real-time updates. Used on big monitors at SAP events.

Admin UI (SAPUI5 — Fiori Elements)

All admin routes require the Admin XSUAA scope.

URL	Description	Auth
`/admin-ui/`	Admin shell — `sap.tnt.ToolPage` with side navigation	XSUAA + `Admin`
`/admin-ui/components/events/`	Events management (Fiori Elements)	XSUAA + `Admin`
`/admin-ui/components/missions/`	Missions management	XSUAA + `Admin`
`/admin-ui/components/groups/`	Groups / completion paths management	XSUAA + `Admin`
`/admin-ui/components/tutorials/`	Tutorials management	XSUAA + `Admin`
`/admin-ui/components/tags/`	Tags management	XSUAA + `Admin`
`/admin-ui/components/accomplishments/`	Accomplishments management	XSUAA + `Admin`
`/admin-ui/components/prizes/`	Prizes management	XSUAA + `Admin`
`/admin-ui/components/operations/`	Operations dashboard	XSUAA + `Admin`
`/admin-ui/components/accounts/`	User accounts management	XSUAA + `Admin`
`/admin-ui/components/changelog/`	Change tracking log	XSUAA + `Admin`

Analytics Explorer (Vue 3 + Monaco — Ad-hoc Analytics)

URL	Description	Auth
`/analytics-ui/`	Vue 3 SPA with entity browser + SQL editor over `AnalyticsService`	XSUAA + `Admin`

Backed by AnalyticsService at /admin/analytics. SQL tab uses Monaco (lazy-loaded); queries pass through srv/lib/analytics-sql-validator.cjs (SELECT-only, allowlisted tables, wrapped with LIMIT 5001). Entity browser is gated by @analytics.exposed annotations on CDS views/entities.

Scanner Apps (Badge Scanner — Event Tool)

All scanner routes require the MobileApp XSUAA scope.

URL	Description	Auth
`/scanner-ui/`	Badge Scanner — UI5 implementation (`sap.ndc.BarcodeScanner`)	XSUAA + `MobileApp`
`/scanner-vue/`	Badge Scanner — Vue 3 implementation (native `BarcodeDetector` API)	XSUAA + `MobileApp`

Both scanner apps provide the same functionality: scan a contestant badge QR code, display progress stats, and claim prizes. The Vue version is mobile-optimized with camera-first UX and SAP Fundamental Styles. Falls back to manual JSON input on browsers without BarcodeDetector support.

URL	Method	Description	Auth
`/scanner/getContestant(accountNumber='...')`	GET	OData function — contestant stats + prize info	XSUAA
`/scanner/claimPrize(recordId='...')`	GET	OData function — mark prize as CLAIMED	XSUAA

CAP Server Index & Swagger UI

These are only accessible when hitting the CAP backend directly (http://localhost:4004), not through the AppRouter.

URL	Description	Auth
`http://localhost:4004/`	CAP index page — lists all services, entities, and links	None
`/api/$api-docs/`	Swagger UI for DeveloperService	None
`/admin/$api-docs/`	Swagger UI for AdminService	None
`/admin/analytics/$api-docs/`	Swagger UI for AnalyticsService	None
`/admin/exports/$api-docs/`	Swagger UI for ExportsService	None
`/display/$api-docs/`	Swagger UI for DisplayService	None
`/api/v1/$api-docs/`	Swagger UI for ConsolidationService	None
`/search/$api-docs/`	Swagger UI for SearchService	None
`/chat/$api-docs/`	Swagger UI for ChatService (no entities; ORD-symmetric)	None

Note: The CAP index page is not visible through the AppRouter because the catch-all route serves Hugo static content at /. Access it directly at http://localhost:4004/ during development.

Exposed via `/_dev` prefix (DEV/QA only)

When EXPOSE_CAP_UI=true is set on the CAP srv app, these are accessible through the AppRouter with XSUAA + Admin scope:

URL	Description	Auth
`/_dev`	CAP index page (lists all services)	XSUAA + `Admin`
`/_dev/api/$api-docs/`	Swagger UI for DeveloperService	XSUAA + `Admin`
`/_dev/admin/$api-docs/`	Swagger UI for AdminService	XSUAA + `Admin`
`/_dev/admin/analytics/$api-docs/`	Swagger UI for AnalyticsService	XSUAA + `Admin`
`/_dev/admin/exports/$api-docs/`	Swagger UI for ExportsService	XSUAA + `Admin`
`/_dev/display/$api-docs/`	Swagger UI for DisplayService	XSUAA + `Admin`
`/_dev/api/v1/$api-docs/`	Swagger UI for ConsolidationService	XSUAA + `Admin`
`/_dev/search/$api-docs/`	Swagger UI for SearchService	XSUAA + `Admin`
`/_dev/chat/$api-docs/`	Swagger UI for ChatService	XSUAA + `Admin`

Enable: cf set-env tutorials-srv EXPOSE_CAP_UI true && cf restart tutorials-srv Disable: cf unset-env tutorials-srv EXPOSE_CAP_UI && cf restart tutorials-srv Do NOT set this on production.

OData Services (CAP backend)

URL	Description	Auth
`/api/$metadata`	DeveloperService OData metadata (EDMX)	XSUAA
`/api/`	DeveloperService — progress tracking, user-facing API	XSUAA
`/admin/$metadata`	AdminService OData metadata	XSUAA + `Admin`
`/admin/`	AdminService — full CRUD for events, missions, etc.	XSUAA + `Admin`
`/admin/analytics/$metadata`	AnalyticsService OData metadata	XSUAA + `Admin`
`/admin/analytics/`	AnalyticsService — `@analytics.exposed` entity surface + `runSelectQuery` action	XSUAA + `Admin`
`/admin/exports/$metadata`	ExportsService OData metadata	XSUAA + `Admin`
`/admin/exports/`	ExportsService — `exportLegacyData(format)` action	XSUAA + `Admin`
`/display/$metadata`	DisplayService OData metadata	XSUAA
`/display/`	DisplayService — read-only data for event dashboards	XSUAA
`/api/v1/$metadata`	ConsolidationService (v1 compat) OData metadata	XSUAA
`/api/v1/`	ConsolidationService — legacy API compatibility	XSUAA
`/search/$metadata`	SearchService OData metadata	None
`/search/`	SearchService — tutorial/mission search (word-boundary matching)	None
`/chat/$metadata`	ChatService OData metadata (no entities; ORD-symmetric only)	XSUAA

Custom REST Endpoints (non-OData)

URL	Method	Description	Auth
`/health`	GET	Liveness check — returns `{ status: "ok" }`	None
`/health/db`	GET	DB connectivity check (runs `SELECT 1 FROM DUMMY`)	None
`/auth/user`	GET	Current user profile (id, email, name)	XSUAA
`/api/qrcode?url=...`	GET	QR code PNG generation	XSUAA
`/api/recommendations`	GET	Personalized "what's next" recommendations (embedding centroid + co-completion blend)	XSUAA
`/build/catalog`	GET	Mission/group/tutorial catalog (JSON, for build pipeline)	None
`/build/co-completions`	GET	Co-completion graph data (used by recommendations)	None
`/build/navigator`	GET	Missions, groups (incl. standalone), tutorial→mission/group mappings, and checkpoint milestones	None
`/build/slug-mapping`	GET	Slug→ID mapping for all missions/groups	None
`/build/repo-catalog`	GET	Slug-keyed `DiscoveredTutorial` map (third-tier discovery fallback)	None
`/build/repo-catalog`	POST	Write the discovered-tutorial baseline (CI-as-canonical-writer)	Bearer (`CONTENT_API_KEY`)
`/build/concepts`	GET	Published Knowledge-Graph concepts (slug, name, description, teaches/requires/requiredBy/relatedTo). Shares `buildConceptsPayload` with the CAP concept-render pipeline (`GET /content/concepts-index` list page + the `POST /content/publish/render-concepts` detail phase, #1327).	None
`/graph/publishConcept`	POST	Admin action — sets `publishedAt` + `publishedBy` on a Concept	XSUAA + `KnowledgeGraph.Admin`
`/graph/unpublishConcept`	POST	Admin action — clears `publishedAt` + `publishedBy` on a Concept	XSUAA + `KnowledgeGraph.Admin`
`/graph/explore-data`	GET	Bulk graph JSON for the `/explore/` page (nodes + edges + generatedAt; 5-min LRU cache)	None
`/graph/path`	GET	Shortest path between two tutorial/concept slugs (`?from=<slug>&to=<slug>`). 400 on same-slug. Extracted from Phase 2 Joule tool.	None
`/api/advocates`	GET	Public list of active developer advocates (sorted by lastName, topics + links denormalized, ETag + `max-age=60, stale-while-revalidate=600`)	None
`/api/advocates/:slug/photo[?size=thumb]`	GET	Photo bytes (256-WebP default, 64-WebP with `?size=thumb`) served from HANA `AdvocatePhotos`. ETag is the sha256, `max-age=86400`. 404 when the advocate has no photo or slug is unknown.	None
`/feedback/submit`	POST	Tutorial feedback form (rate-limited; submitter IP hashed via `SUBMISSION_SALT_SECRET`)	None
`/chat/stream`	POST	Joule chat streaming endpoint (Server-Sent Events)	XSUAA
`/a2a`	POST	A2A JSON-RPC 2.0 endpoint (`message/send`, `message/stream`, `tasks/get`, `tasks/cancel`) for central Joule consumption (#1220). Skill via `metadata.skillId`; defaults to conversational `tutorial-chat`. Enable/config via `/admin-ui/#joule` (ChatSettings `a2aEnabled`).	XSUAA + `Tutorial.MCP`
`/.well-known/agent-card.json`	GET	A2A Agent Card — public discovery document (5 skills, streaming, xsuaa security scheme). Base URL + token URL from `/admin-ui/#joule` (ChatSettings).	None
`/.well-known/a2a-instructions.md`	GET	A2A consumption guide (how to authenticate + call)	None
`/api/codecheck`	POST	AI code-check spike (issue #171, gated on `ChatSettings.codeCheckEnabled`). Body: `{ tutorialSlug, stepNumber, submittedCode, language? }`. Returns `{ verdict: 'pass'\|'partial'\|'fail', summary, suggestions[], correctAspects[] }`. 503 when flag off; 429 with `Retry-After` on per-user 30/hr or per-(user,slug,step) 5/5min cap.	XSUAA
`/author/generateOsVariants`	POST	AI-assisted OS variant generation for the VS Code authoring plugin (issue #173). Body: `{ sourceMarkdown, sourceOS, targetOSes[], context? }`. Returns `{ variants[], model, tokensUsed, requestId }`. 60/hr per author. See spec #173 §5.	XSUAA + `Tutorial.Author`
`/admin/embeddings/stats`	GET	Tutorial embedding coverage / drift statistics	XSUAA + `Admin`
`/api/alerts`	GET	Active alerts with audience=ALL. 60 s cache.	None
`/api/alerts/me`	GET	ALL + AUTHENTICATED + ADMIN (if admin). 30 s private cache.	XSUAA
`/api/homepage/events`	GET	3-4 upcoming events (merged from DB + events calendar). 60 s cache.	None
`/api/homepage/videos`	GET	@sapdevs video feed (Developer News + recent uploads). 15-min cache; requires `YOUTUBE_API_KEY`.	None
`/api/homepage/communityBlogs`	GET	SAP Community blog RSS feed (latest posts). 30-min cache.	None
`/api/homepage/news`	GET	SAP News headlines RSS feed. 30-min cache.	None
`/api/homepage/shelves?verb=<v>`	GET	All active `HomepageShelves` entries for one verb (`LEARN`\|`BUILD`\|`INTEGRATE`\|`OPERATE`\|`AI`\|`CONNECT`). 5-min cache.	None
`/api/homepage/redirectsActive`	GET	Active `LegacyRedirects` rows (approuter-only consumer; refreshes hourly).	None
`/api/homepage/recordRedirectHits`	POST	Idempotent batch hit counter for legacy redirects (approuter-only writer). Body: `{ hits: [{ id, count }] }`.	None
`/build/homepage-shelves`	GET	All `HomepageShelves` entries keyed by verb (Hugo build-time only; bakes `hugo/data/homepage_shelves.json`). Payload includes `tagline` / `whyItMatters` / `authoringStatus` (#759).	None
`/build/verb-definitions`	GET	All `VerbDefinitions` rows (6 verbs) — labels, icons, taglines, "why it matters" copy for the homepage verb-spine flip tiles (#759). Bakes `hugo/data/verb_definitions.json`.	None
`/build/shelf-definitions`	GET	All `ShelfDefinitions` rows (4 shelf categories: `LEARN` / `START` / `REFERENCE` / `COMMUNITY`) — taglines + "why it matters" copy for verb sub-page shelf headers (#759). Bakes `hugo/data/shelf_definitions.json`.	None

/build/navigator returns a shape with missions[], groups[] (incl. standalone published Groups), tutorialMappings[], and checkpointMappings[] (milestone markers). The 5-minute in-memory cache is automatically invalidated when the Admin UI saves changes to Missions, Groups, or CompletionPath entities — no ?nocache=1 needed. Implementation: srv/lib/navigator-catalog.js.

/feedback/submit returns 503 when SUBMISSION_SALT_SECRET is missing — set it in CI secrets and locally before testing the form. The request body is capped at 8 KB.

Content Persistence Endpoints

URL	Method	Description	Auth
`/content/tutorials/{slug}`	GET	Serve tutorial HTML from HANA (ETag, Cache-Control)	None
`/content/hashes`	GET	SHA-256 map of active content (`{ slug: hash }`)	None
`/content/nav`	GET	Navigation metadata for published tutorials	None
`/content/publish`	POST	Deprecated — single-shot publish (base64-gzipped files). Kept for one release cycle; new clients use the chunked protocol below.	Bearer (`CONTENT_API_KEY`)
`/content/publish/begin`	POST	Open a chunked publish session. Returns `{ sessionId, version, expiresAt }` (201) or 409 if a publish is already in progress.	Bearer (`CONTENT_API_KEY`)
`/content/publish/append`	POST	Append a batch of files to an open session. Files shape: `{ slug: base64gzip }`. Idempotent for `(sessionId, slug)`.	Bearer (`CONTENT_API_KEY`)
`/content/publish/commit`	POST	Activate the session's manifest. Idempotent (returns `alreadyActive: true` on repeat).	Bearer (`CONTENT_API_KEY`)
`/content/publish/abort`	POST	Discard an open session. Idempotent.	Bearer (`CONTENT_API_KEY`)
`/content/code-check-specs`	POST	AI code-check spike (issue #171). Upserts `CodeCheckSpecs` rows from `*.codecheck.json` sidecars produced by `fetch-tutorials`. Body: `{ specs: [{ slug, stepNumber, goal, language?, hints?, referenceSolution? }] }`. Carry-forward semantics (no DELETE on absent specs). Server-only — `referenceSolution` never reaches the client.	Bearer (`CONTENT_API_KEY`)
`/content/rollback`	POST	Revert to previous manifest version	Bearer (`CONTENT_API_KEY`)

Chunked publish protocol

The chunked endpoints replace single-shot POST /content/publish. They split a publish across many small batches so a flaky TCP connection or a 53 MB JSON body doesn't kill the whole run, and the server's commit step does carry-forward of unchanged slugs (so a partial payload no longer drops the rest of the catalog).

Typical client flow:

# 1. Begin a session — server returns sessionId + version
curl -sX POST http://localhost:4004/content/publish/begin \
  -H "Authorization: Bearer $CONTENT_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "trigger": "manual", "hugoVersion": "0.x" }'
# → 201 { "sessionId": "...", "version": 42, "expiresAt": "..." }

# 2. Append batches (50 slugs at a time by default; idempotent per (sessionId, slug))
curl -sX POST http://localhost:4004/content/publish/append \
  -H "Authorization: Bearer $CONTENT_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "sessionId": "...", "files": { "slug-a": "<base64gzip>", "slug-b": "<base64gzip>" } }'

# 3. Commit — activates the manifest; idempotent (returns alreadyActive: true on repeat)
curl -sX POST http://localhost:4004/content/publish/commit \
  -H "Authorization: Bearer $CONTENT_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "sessionId": "..." }'

# Or, abandon the session:
curl -sX POST http://localhost:4004/content/publish/abort \
  -H "Authorization: Bearer $CONTENT_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "sessionId": "..." }'

begin returns 409 if another publish session is already in progress; abort it (or wait for the reaper, which sweeps stale sessions every 5 minutes after a 30-minute idle threshold) before retrying.

Hosted MCP Server

The CAP backend serves a hosted Model Context Protocol surface via the @cap-js/mcp adapter (tools-only) plus a custom compose router (srv/lib/mcp-compose-router.js) that adds resources + prompts on the RP-bearing mounts. Each CDS service is mounted separately at /mcp/<svc> — there is no aggregate /mcp root. End-user connection guide: docs/end-users/mcp-quickstart.md; parameter reference: docs/developers/reference/mcp-server.md.

Per-service mounts

Mount	Service	Curated tools	Auth (at mount)
`/mcp/search`	SearchService	`search_tutorials`, `list_missions`, `get_mission`, `get_tutorial`	None (anonymous)
`/mcp/graph`	KnowledgeGraphService	`kg_shared_concepts`, `kg_neighborhood`, `kg_search_concepts`, `kg_community` (+ resources + prompts)	None (anonymous)
`/mcp/homepage`	HomepageService	`get_my_recommended_tutorials`, `get_my_recommended_missions`	`authenticated-user`
`/mcp/api`	DeveloperService	`get_my_tutorials`, `get_my_missions`, `get_my_events`, `get_my_completed_steps`, `get_tutorial_step`, `complete_step`, `reset_tutorial_progress`	`authenticated-user`
`/mcp/admin`	AdminService	`merge_concepts`, `promote_community_to_mission`, `trigger_rebuild`, `publish_content` (+ resources + prompts)	`Admin` + per-action scope

describe and query are auto-generated on every mount by @cap-js/mcp. Each service also serves resources (tutorial://<slug>, mission://<slug>, concept://<id>) and prompts (prompts/list) where the compose router is mounted (/mcp/graph, /mcp/admin).

Auth-tier route prefixes (approuter → srv rewrite)

The approuter (approuter/xs-app.json) fronts three additional prefixes that srv/server.js rewrites onto the real /mcp/* mounts:

Public prefix	Approuter auth	Rewrites to	Purpose
`/mcp/*`	none (csrf off)	(direct)	Anonymous read tier — public services
`/mcp-pat/*`	none (csrf off)	`/mcp/*`	PAT tier — requires `Bearer pat_...` (else JSON-RPC 401)
`/mcp-auth/*`	xsuaa, scope `Tutorial.MCP`	`/mcp/*`	OAuth/JWT tier — forwards the user JWT
`/mcp-admin/*`	xsuaa, scope `Tutorial.MCP`	`/mcp/admin/*`	Phase 3 admin-curation tools

Kill switches: MCP_AUTH_ENABLED=false → /mcp-auth/* + /mcp-pat/* return 503. MCP_PHASE3_ENABLED=false or MCP_ADMIN_TOOLS_ENABLED=false → /mcp-admin/* returns 503. Transport is Streamable HTTP (MCP protocol 2025-06); clients negotiate JSON vs SSE via Accept.

Personal Access Tokens (PAT)

URL	Method	Description	Auth
`/pats`	GET	`PatService` — list the caller's own PATs (`MyPATs`, row-scoped to `user.email = $user.id`)	XSUAA (`authenticated-user`)
`/pats/mintPAT`	POST	Mint a PAT: `mintPAT(name, scopes, ttlDays)` → `{ ID, token, prefix, expiresAt }`. Plaintext token returned once; server stores only a SHA-256 hash. Scopes: `read` (read tools) / `write` (allows `complete_step`, `reset_tutorial_progress`).	XSUAA (`authenticated-user`)
`/pats/MyPATs(<ID>)/PatService.revokePAT`	POST	Bound action — revoke one of the caller's PATs	XSUAA (`authenticated-user`)

PATs are recognized by srv/lib/mcp-pat-middleware.js (SHA-256 hash lookup, 60 s cache) on the /mcp-pat/* prefix. Minting is surfaced in the Admin UI at /admin-ui/#pats for users in the Tutorials MCP Users role collection. An expired or revoked PAT returns 401. Write tools reject PATs lacking the write scope with 403.

WebSocket / Real-time

URL	Protocol	Description	Auth
`/ws/event-stream`	Socket.IO	Anonymous live tutorial-completion stream (backed by `EventStreamService`)	None
`/ws/display`	Socket.IO	Display dashboard live updates (backed by `DisplayService`)	XSUAA `DisplayApp` (enforced at namespace join, not approuter)
`/socket.io/`	Socket.IO	Underlying transport endpoint for both namespaces (`?EIO=4&transport=websocket`)	None

Joule Chat Tools

Tools registered with the Joule chat runtime (LLM tool-calling surface, not standalone HTTP endpoints). Reachable via POST /chat/stream. Each tool's registration is gated on a ChatSettings flag so the LLM only sees the tool when the feature is enabled.

`getBranchRecommendation`

Author-aware branch + skip recommender for tutorials and missions (issue #172 PR 4).

Registration gate — registered when ChatSettings.enabled = true && ChatSettings.branchingEnabled = true. When branchingEnabled = false, the tool is not registered and the LLM falls back to general guidance.
Params — missionSlug? (string), tutorialSlug? (string), branchPointId? (string). At least one of missionSlug / tutorialSlug is required. branchPointId requires tutorialSlug.

Return shape:

{
  "branchPoints": [
    { "id": "...", "picked": "...", "reason": "...", "confidence": 0.0,
      "allBranches": [{ "key": "...", "label": "..." }] }
  ],
  "altGroups": [
    { "id": "...", "groupKey": "...", "picked": "...", "reason": "...", "confidence": 0.0,
      "allBranches": [{ "key": "...", "label": "..." }] }
  ],
  "skipPoints": [
    { "stepNumber": 4, "skip": true, "reason": "...", "skipLabel": "...", "skipReason": "..." }
  ],
  "note": "...",   // empty-shape signal (see below)
  "error": "..."   // validation failure (see below)
}

Telemetry — writes one BranchDecisions row per branch / alt-group / skip recommendation with source: 'jouleTool'. Skip-point telemetry is only emitted when skip === true.
Error envelopes (validation failures, no telemetry):
- error: 'requires_at_least_one_of: missionSlug, tutorialSlug, branchPointId'
- error: 'branchPointId requires tutorialSlug'
- error: 'unknown_branch_point: <id>'
Empty-shape envelopes (not errors, no recommendation possible):
- note: 'tutorial_has_no_branches'
- note: 'mission_not_found'
- note: 'mission_has_no_alt_groups'

Implementation: srv/lib/branch/joule-tool.js. Telemetry helper: srv/lib/branch/branch-telemetry.js.

`findLearningPath`

Hybrid pathBetween Joule tool — translates "I want to learn X" / "what should I learn next" / "show me a path to Y" prompts into an ordered tutorial sequence (issue #445 / Phase 2 of #381).

Registration gate — registered when ChatSettings.enabled = true && ChatSettings.kgPathBetweenEnabled = true. When kgPathBetweenEnabled = false (default), the tool is not registered and the LLM falls back to general guidance via searchTutorials.
Params — toSlug (string, required, lowercase alphanumeric + hyphens, 1-80 chars), fromSlug? (string, optional — same shape). If fromSlug is omitted, the handler infers it from the user's most-recent COMPLETED TaskRecord; if no completion history, the search is unanchored (uses toSlug as its own neighborhood center).
Return shape — rendered markdown string that the LLM paraphrases or quotes verbatim:
```
Here's a path from `<fromSlug>` to `<toSlug>`:

1. **<title>** — [<slug>](https://developers.sap.com/tutorials/<slug>.html)
   ~<minutes> min · <reason>
```
Where <reason> is one of "Prerequisite chain", "Often completed together", "Shares concepts". Empty result set returns a friendly "couldn't find a path" message pointing at the catalog.
Telemetry — emits kg.joule.path_requested at dispatch start ({ fromSlug, toSlug, hasUserId, fromSlugInferred, unanchored }) and kg.joule.path_returned at dispatch end ({ ..., resultCount, pathTypeBreakdown: { PREREQ, CO_COMPLETED, SHARED_CONCEPT }, latencyMs, exactTargetReached, error? }). The pathTypeBreakdown lets ops see which arm produces results post-rollout — useful for validating the Phase 2.5 prereq-enrichment hypothesis.
Error envelopes — handler returns friendly strings for the LLM to paraphrase (never throws into the LLM-tool-result):
- Malformed toSlug / fromSlug — "That tutorial slug doesn't look right…"
- SparqlTimeoutError — "I couldn't find a learning path right now — the query timed out…" Telemetry tag: error: 'timeout'.
- SparqlSyntaxError / generic — "Internal error finding a learning path…" Telemetry tag: error: 'syntax' or error: 'unknown'.
AI-judge fixture — test/hybrid/joule-tool-pick-find-path.test.js — 12-prompt fixture asserting the LLM picks the right tool (findLearningPath vs getRelevantSteps vs checkCode vs no-tool) at ≥90% accuracy. Gated by HYBRID_AI_TESTS=true. Regression guard against tool-descriptor changes.

Implementation: srv/lib/kg/joule-tool-find-path.js + srv/lib/kg/concepts-for-user.js (user-coverage helper). Architecture details: docs/developers/architecture/joule.md.

Approuter-only Endpoints

URL	Method	Description	Auth
`/login`	GET	Triggers XSUAA login redirect	XSUAA
`/login/callback`	GET	OAuth2 callback (handled by AppRouter)	XSUAA
`/admin/rebuild`	POST	Hot-reload static content (tar.gz upload)	Bearer (`REBUILD_API_KEY`)

XSUAA Scopes Reference

The application defines its roles in xs-security.json. Endpoints in this document indicate which scope is required where applicable.

Scope	Role Collection	Used by
`$XSAPPNAME.Admin`	"Tutorials Admin"	`/admin-ui/`, `/analytics-ui/`, `/_dev`, `/admin/*` OData, `/admin/embeddings/stats`
`$XSAPPNAME.SuperAdmin`	"Tutorials SuperAdmin"	`promote_community_to_mission`, `publish_content` (emergency), other SuperAdmin-gated admin actions
`$XSAPPNAME.MobileApp`	"Tutorials Scanner"	`/scanner-ui/`, `/scanner-vue/`
`$XSAPPNAME.Tutorial.Author`	"Tutorials Author"	`/tutorials-qa/`, `/qa-search/`, `/author/generateOsVariants`, `trigger_rebuild`
`$XSAPPNAME.KnowledgeGraph.Admin`	"Tutorials Admin"	`/graph/publishConcept`, `/graph/unpublishConcept`, `merge_concepts`
`$XSAPPNAME.Tutorial.API`	"Tutorials API Consumer"	`/graphql` (authenticated GraphQL over `DeveloperService`)
`$XSAPPNAME.Tutorial.MCP`	"Tutorials MCP Users"	`/mcp-auth/`, `/mcp-admin/` (hosted MCP OAuth/JWT tiers); PAT minting at `/admin-ui/#pats`
(authenticated-user)	(any logged-in user)	`/api/`, `/display/`, `/chat/`, `/pats`, `/mcp-pat/`

Local Development Notes

AppRouter: http://localhost:5000 (runs approuter/server.js)
CAP backend: http://localhost:4004 (runs cds watch)
Hugo dev server: http://localhost:1313 (runs npm run dev)

When running locally, the approuter proxies all API calls to CAP_BASE_URL (default http://localhost:4004) and injects mock Basic auth:

/admin/* → admin:admin
/display/* → display:display
All others → developer:developer

Quick Smoke Test Checklist

# 1. Health
curl http://localhost:4004/health
curl http://localhost:4004/health/db

# 2. Public data (build pipeline)
curl http://localhost:4004/build/catalog       | jq '.missions | length'
curl http://localhost:4004/build/navigator     | jq '.tutorials | length'
curl http://localhost:4004/build/co-completions | jq '. | length'
curl http://localhost:4004/build/repo-catalog  | jq '. | length'

# 3. OData metadata
curl http://localhost:4004/api/\$metadata             -H "Accept: application/xml"
curl http://localhost:4004/admin/\$metadata           -H "Accept: application/xml"
curl http://localhost:4004/admin/analytics/\$metadata -H "Accept: application/xml"
curl http://localhost:4004/admin/exports/\$metadata   -H "Accept: application/xml"

# 4. Content serving
curl http://localhost:4004/content/hashes | jq 'keys | length'
curl -I http://localhost:4004/content/tutorials/abap-dev-get-started

# 5. Search (unauthenticated)
curl "http://localhost:4004/search/Tutorials?\$search=abap" | jq '.value | length'

# 6. Auth (via approuter)
curl http://localhost:5000/auth/user  # expect 401 or user JSON

# 7. UIs (via approuter — open in browser)
open http://localhost:5000/admin-ui/      # ToolPage shell  (Admin scope)
open http://localhost:5000/analytics-ui/  # SQL + entity browser (Admin scope)
open http://localhost:5000/scanner-vue/   # Badge scanner (MobileApp scope)
open http://localhost:5000/me/            # Profile + Recent Activity timeline

Security Testing Reference

Focused pen-test suite added in #797. All framework defaults (CAP CSRF auto-enforcement, Fiori Elements token prefetch, sanitize-html, approuter CSP) cover the primary attack surface — these tests pin the coverage against regression.

File	Type	Scope
`test/unit/srv/analytics-sql-validator.pen.test.js`	unit	Malicious SQL against `AnalyticsService.runSelectQuery` validator (DDL/DML, stacked queries, comment bypasses, disallowed tables, oversize input). Covers `srv/lib/analytics-sql-validator.cjs`.
`test/unit/scripts/sanitize-html.pen.test.js`	unit	OWASP XSS Filter Evasion Cheat Sheet payloads against tutorial-source sanitizer. Covers `scripts/parsers/sanitize-html.ts`.
`test/unit/scripts/check-hugo-safe-html.test.js`	unit	Unit coverage for the Hugo `safeHTML` grep guard (marker recognition, 3-line window, allow/deny cases). Covers `scripts/check-hugo-safe-html.cjs`.
`test/smoke/csrf-enforcement.test.js`	smoke	POST to `/admin/Tags`, `/admin/Missions`, `/api/completeStep` without a valid `x-csrf-token` → 4xx. Covers the CAP OData mutation surface.
`test/smoke/express-route-mutations.test.js`	smoke	Sweeps all 10 bearer-token-protected `app.post(...)` routes in `srv/server.js` (`/content/publish`, `/content/rollback`, `/content/code-check-specs`, `/content/validate-answer-specs`, and the 6 build endpoints), plus XSUAA-scoped and public-POST hardening.
`test/smoke/xss-reflection.test.js`	smoke	Read-only reflection check: probes `/homepage/` and `/tutorials/tutorial-platform-feature-cookbook` for unescaped payloads, `/search/?q=<payload>` for reflected query strings, and `/tutorials/<payload>/` for reflection on the 404 path.
`test/smoke/security-headers.test.js`	smoke	CSP, X-Frame-Options, X-Content-Type-Options, HSTS, Referrer-Policy on approuter HTML responses.
`scripts/check-hugo-safe-html.cjs`	build guard	Fails the build if any new `safeHTML` / `safeHTMLAttr` / `printf "<%s>"` lands in `hugo/layouts/*/.{html,xml,xsl}` without a `<!-- security-reviewed: ... -->` marker within 3 lines above. Runs as `npm run check:security-annotations` (wired into `prebuild`).

Running locally:

# All unit pen tests (fast, no external deps)
npx vitest run test/unit/srv/analytics-sql-validator.pen.test.js \
              test/unit/scripts/sanitize-html.pen.test.js \
              test/unit/scripts/check-hugo-safe-html.test.js \
              --project unit

# All smoke pen tests (needs deployed DEV; SRV and/or approuter URLs)
SMOKE_BASE_URL="https://tutorial-system-dev-tutorials-approuter.cfapps.eu10-005.hana.ondemand.com" \
SMOKE_SRV_URL="https://tutorial-system-dev-tutorials-srv.cfapps.eu10-005.hana.ondemand.com" \
  npx vitest run test/smoke/csrf-enforcement.test.js \
                 test/smoke/express-route-mutations.test.js \
                 test/smoke/xss-reflection.test.js \
                 test/smoke/security-headers.test.js \
                 --project smoke

# Hugo safeHTML guard
npm run check:security-annotations

Policy for new findings: if a pen test uncovers a real vulnerability (not a test-expectation mismatch), file a follow-up issue referencing #797, skip that individual case with a .skip and a // TODO(#XXX) comment, and address it in a dedicated PR. This suite is a regression net, not a fix-it-all PR.

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UI & API Endpoints — Testing Reference

Public Frontend (Hugo static — via AppRouter)

QA Channel — Author Preview (XSUAA-gated)

Display App (Vue 3 — Real-time Event Dashboard)

Admin UI (SAPUI5 — Fiori Elements)

Analytics Explorer (Vue 3 + Monaco — Ad-hoc Analytics)

Scanner Apps (Badge Scanner — Event Tool)

CAP Server Index & Swagger UI

Exposed via `/_dev` prefix (DEV/QA only)

OData Services (CAP backend)

Custom REST Endpoints (non-OData)

Content Persistence Endpoints

Chunked publish protocol

Hosted MCP Server

Per-service mounts

Auth-tier route prefixes (approuter → srv rewrite)

Personal Access Tokens (PAT)

WebSocket / Real-time

Joule Chat Tools

`getBranchRecommendation`

`findLearningPath`

Approuter-only Endpoints

XSUAA Scopes Reference

Local Development Notes

Quick Smoke Test Checklist

Security Testing Reference

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UI & API Endpoints — Testing Reference

Public Frontend (Hugo static — via AppRouter)

QA Channel — Author Preview (XSUAA-gated)

Display App (Vue 3 — Real-time Event Dashboard)

Admin UI (SAPUI5 — Fiori Elements)

Analytics Explorer (Vue 3 + Monaco — Ad-hoc Analytics)

Scanner Apps (Badge Scanner — Event Tool)

CAP Server Index & Swagger UI

Exposed via /_dev prefix (DEV/QA only)

OData Services (CAP backend)

Custom REST Endpoints (non-OData)

Content Persistence Endpoints

Chunked publish protocol

Hosted MCP Server

Per-service mounts

Auth-tier route prefixes (approuter → srv rewrite)

Personal Access Tokens (PAT)

WebSocket / Real-time

Joule Chat Tools

getBranchRecommendation

findLearningPath

Approuter-only Endpoints

XSUAA Scopes Reference

Local Development Notes

Quick Smoke Test Checklist

Security Testing Reference

Exposed via `/_dev` prefix (DEV/QA only)

`getBranchRecommendation`

`findLearningPath`