LinkedIn Ads Integration — Phase 1 (Read-Only)

Connect LinkedIn Campaign Manager accounts via LinkedIn Marketing API. Import Sponsored Content, Message Ads, Dynamic Ads, and Text Ads with B2B-specific metrics (cost per lead, cost per InMail open, engagement rate by job title/industry).

Key notes:

• LinkedIn Marketing API v2 — OAuth2 with 3-legged flow
• Entity hierarchy: Account → Campaign Group → Campaign → Creative
• B2B targeting: job title, company size, industry, seniority
• Unique metrics: social actions, follows, InMail opens

Impact: LinkedIn is THE B2B advertising platform. Any agency with B2B clients needs this. Cross-platform B2B reporting (LinkedIn + Google + Meta) is highly valuable.