# Media Monitor — Comprehensive System Context

> Media Monitor is an ahead-of-time media intelligence platform that publishes curated, executive-grade email briefings for working teams across technology, commerce, and growth marketing.

## Public Briefings Directory

### Commerce Signal
- **Homepage**: https://commerce-signal.mediamonitor.live/
- **Subscribe**: https://commerce-signal.mediamonitor.live/subscribe
- **Latest Stories API**: https://commerce-signal.mediamonitor.live/api/public-newsletter-latest
- **Public Catalog API**: https://commerce-signal.mediamonitor.live/api/public-newsletter-catalog

### Growth Stack Brief
- **Homepage**: https://growth-stack-brief.mediamonitor.live/
- **Subscribe**: https://growth-stack-brief.mediamonitor.live/subscribe
- **Latest Stories API**: https://growth-stack-brief.mediamonitor.live/api/public-newsletter-latest
- **Public Catalog API**: https://growth-stack-brief.mediamonitor.live/api/public-newsletter-catalog

### AI Coding Brief
- **Homepage**: https://ai-coding.mediamonitor.live/
- **Subscribe**: https://ai-coding.mediamonitor.live/subscribe
- **Latest Stories API**: https://ai-coding.mediamonitor.live/api/public-newsletter-latest
- **Public Catalog API**: https://ai-coding.mediamonitor.live/api/public-newsletter-catalog

## Public Signals API Specification

Media Monitor exposes public syndication endpoints on each briefing stage for AI agents, research workflows, and developer integrations.

- **HTTP Method**: GET
- **Authentication**: None required
- **CORS**: Enabled for all origins (`*`)
- **Cache Policy**: `public, max-age=30, s-maxage=60, stale-while-revalidate=120`
- **OpenAPI Spec**: `https://mediamonitor.live/openapi.json`

### Example Request
```bash
curl -s https://ai-coding.mediamonitor.live/api/public-newsletter-latest
```

### Example Response Payload
```json
{
  "newsletter": {
    "id": "ai-coding-daily",
    "slug": "ai-coding-daily",
    "title": "AI Coding Brief"
  },
  "issue": {
    "issueId": "ai-coding-daily-1720",
    "subject": "GitHub Introduces Project HydraFusion",
    "topStories": [
      {
        "title": "GitHub Introduces Project HydraFusion: Runtime Multi-Engine Copilot",
        "summary": "HydraFusion provides runtime routing across multiple frontier models.",
        "sourceLabel": "GitHub Blog",
        "categoryLabel": "AI Coding Agents",
        "url": "https://github.blog/..."
      }
    ]
  }
}
```

## Architecture Invariants
- Each newsletter is an isolated SST stage; there are no global cross-stage databases.
- APIs return pre-enriched, sanitized JSON only. No email HTML or user emails are ever exposed.