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.agents/skills/cloudflare-deploy/references/ai-search/patterns.md

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+# AI Search Patterns
+
+## search() vs aiSearch()
+
+| Use | Method | Returns |
+|-----|--------|---------|
+| Custom UI, analytics | `search()` | Raw chunks only (~100-300ms) |
+| Chatbots, Q&A | `aiSearch()` | AI response + chunks (~500-2000ms) |
+
+## rewrite_query
+
+| Setting | Use When |
+|---------|----------|
+| `true` | User input (typos, vague queries) |
+| `false` | LLM-generated queries (already optimized) |
+
+## Multitenancy (Folder-Based)
+
+```typescript
+const answer = await env.AI.autorag("saas-docs").aiSearch({
+  query: "refund policy",
+  model: "@cf/meta/llama-3.3-70b-instruct-fp8-fast",
+  filters: {
+    column: "folder",
+    operator: "gte",  // "starts with" pattern
+    value: `tenants/${tenantId}/`
+  }
+});
+```
+
+## Streaming
+
+```typescript
+const stream = await env.AI.autorag("docs").aiSearch({
+  query, model: "@cf/meta/llama-3.3-70b-instruct-fp8-fast", stream: true
+});
+return new Response(stream, { headers: { "Content-Type": "text/event-stream" } });
+```
+
+## Score Threshold
+
+| Threshold | Use |
+|-----------|-----|
+| 0.3 (default) | Broad recall, exploratory |
+| 0.5 | Balanced, production default |
+| 0.7 | High precision, critical accuracy |
+
+## System Prompt Template
+
+```typescript
+const systemPrompt = `You are a documentation assistant.
+- Answer ONLY based on provided context
+- If context doesn't contain answer, say "I don't have information"
+- Include code examples from context`;
+```
+
+## Compound Filters
+
+```typescript
+// OR: Multiple folders
+filters: {
+  operator: "or",
+  filters: [
+    { column: "folder", operator: "gte", value: "docs/api/" },
+    { column: "folder", operator: "gte", value: "docs/auth/" }
+  ]
+}
+
+// AND: Folder + date
+filters: {
+  operator: "and",
+  filters: [
+    { column: "folder", operator: "gte", value: "docs/" },
+    { column: "timestamp", operator: "gte", value: oneWeekAgoSeconds }
+  ]
+}
+```
+
+## Reranking
+
+Enable for high-stakes use cases (adds ~300ms latency):
+
+```typescript
+reranking: { enabled: true, model: "@cf/baai/bge-reranker-base" }
+```