feat: add marketing tools registry for agent discovery

Create centralized tools/ directory with REGISTRY.md index and 29
integration guides covering analytics, SEO, CRM, payments, referral,
email, ads, automation, and commerce platforms.

Each guide includes API endpoints, authentication, common operations,
and links to relevant skills. Updated AGENTS.md and key skills
(referral-program, analytics-tracking, email-sequence, paid-ads)
with tool integration references.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

tools/integrations/google-search-console.md

@@ -0,0 +1,147 @@
+# Google Search Console
+
+Free tool for monitoring website search performance and indexing.
+
+## Capabilities
+
+| Integration | Available | Notes |
+|-------------|-----------|-------|
+| API | ✓ | Search Analytics API, URL Inspection API |
+| MCP | - | Not available |
+| CLI | - | Use gcloud or API scripts |
+| SDK | ✓ | Google API client libraries |
+
+## Authentication
+
+- **Type**: OAuth 2.0 or Service Account
+- **Scopes**: `https://www.googleapis.com/auth/webmasters.readonly`
+- **Setup**: Create credentials in Google Cloud Console
+
+## Common Agent Operations
+
+### Get search analytics
+
+```bash
+POST https://searchconsole.googleapis.com/webmasters/v3/sites/{site_url}/searchAnalytics/query
+
+{
+  "startDate": "2024-01-01",
+  "endDate": "2024-01-31",
+  "dimensions": ["query"],
+  "rowLimit": 100
+}
+```
+
+### Get performance by page
+
+```bash
+POST https://searchconsole.googleapis.com/webmasters/v3/sites/{site_url}/searchAnalytics/query
+
+{
+  "startDate": "2024-01-01",
+  "endDate": "2024-01-31",
+  "dimensions": ["page"],
+  "rowLimit": 50
+}
+```
+
+### Get performance by country
+
+```bash
+POST https://searchconsole.googleapis.com/webmasters/v3/sites/{site_url}/searchAnalytics/query
+
+{
+  "startDate": "2024-01-01",
+  "endDate": "2024-01-31",
+  "dimensions": ["country", "query"],
+  "rowLimit": 100
+}
+```
+
+### Inspect URL
+
+```bash
+POST https://searchconsole.googleapis.com/v1/urlInspection/index:inspect
+
+{
+  "inspectionUrl": "https://example.com/page",
+  "siteUrl": "https://example.com/"
+}
+```
+
+### List sitemaps
+
+```bash
+GET https://searchconsole.googleapis.com/webmasters/v3/sites/{site_url}/sitemaps
+
+Authorization: Bearer {access_token}
+```
+
+### Submit sitemap
+
+```bash
+PUT https://searchconsole.googleapis.com/webmasters/v3/sites/{site_url}/sitemaps/{sitemap_url}
+
+Authorization: Bearer {access_token}
+```
+
+### Request indexing
+
+```bash
+POST https://indexing.googleapis.com/v3/urlNotifications:publish
+
+{
+  "url": "https://example.com/new-page",
+  "type": "URL_UPDATED"
+}
+```
+
+## Dimensions
+
+- `query` - Search query
+- `page` - Page URL
+- `country` - Country code
+- `device` - Device type (MOBILE, DESKTOP, TABLET)
+- `date` - Date
+- `searchAppearance` - Search result type
+
+## Metrics
+
+- `clicks` - Clicks from search
+- `impressions` - Search impressions
+- `ctr` - Click-through rate
+- `position` - Average position
+
+## Filters
+
+```json
+{
+  "dimensionFilterGroups": [{
+    "filters": [{
+      "dimension": "query",
+      "operator": "contains",
+      "expression": "keyword"
+    }]
+  }]
+}
+```
+
+## When to Use
+
+- Analyzing search performance
+- Finding keyword opportunities
+- Monitoring indexing status
+- Submitting new pages for indexing
+- Identifying crawl issues
+- Tracking position changes
+
+## Rate Limits
+
+- 200 queries per minute
+- 1,200 requests per minute
+
+## Relevant Skills
+
+- seo-audit
+- programmatic-seo
+- analytics-tracking