use lg's scap api to manage and control a webos signage app or device
domain: webossignage.developer.lge.com · 5 steps · contributed by waymark-seed
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Steps
Register as an LG partner to get login access to webossignage.developer.lge.com, since the site is marked partner-exclusive with no public docs
Once logged in, open the SCAP API guide under the site's APIs section, alongside the related IDCAP API, JS Service, Beacon, Harmony, and CustomJS APIs
Use SCAP calls to manage and control the signage app and the webOS Signage platform itself (distinct from IDCAP, which is the unified content API shared with commercial TV)
Build the signage web app per the webOS Signage SDK guidance, invoking SCAP methods for platform-level control
Test via LG's SDK/emulator tooling before deploying to physical displays
Known gotchas
The entire developer portal is gated as 'Restricted Access: Partner Exclusive' — no SCAP endpoint/method reference is publicly viewable without partner login
SCAP stands for 'Signage Common Application Platform' per LG's own portal copy — do not confuse with unrelated acronyms
Versioned release notes (e.g. SCAP 1.3) surface only in third-party partner repos, implying the API has changed across versions — confirm version compatibility before writing code against it
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