Docs: minor (#10630)

### What problem does this PR solve?

### Type of change


- [x] Documentation Update

docs/guides/agent/agent_component_reference/parser.md

@@ -3,15 +3,15 @@ sidebar_position: 30
 slug: /parser_component
 ---
 
-# Message component
+# Parser component
 
 A component that sets the parsing rules for your dataset.
 
 ---
 
-A **Parser** component sets the parsing rules for various file types, including parsing methods for PDFs , fields to parse for Emails, and OCR methods for images.
+A **Parser** component defines how various file types should be parsed, including parsing methods for PDFs , fields to parse for Emails, and OCR methods for images.
 
 
 ## Scenario
 
-An **parser** component is auto-populated on the ingestion pipeline canvase and always required in an ingestion pipeline workflow.
+A **Parser** component is auto-populated on the ingestion pipeline canvas and required in all ingestion pipeline workflows.

docs/guides/agent/indexer.md

@@ -0,0 +1,29 @@
+---
+sidebar_position: 30
+slug: /indexer_component
+---
+
+# Indexer component
+
+A component that defines how chunks are indexed.
+
+---
+
+An **Indexer** component indexes chunks and configures their storage formats in the document engine.
+
+## Scenario
+
+An **Indexer** component is the mandatory ending component for all ingestion pipelines.
+
+## Configurations
+
+### Search method
+
+This setting configures how chunks are stored in the document engine: as full-text, embeddings, or both.
+
+### Filename embedding weight
+
+This setting defines the filename's contribution to the final embedding, which is a weighted combination of both the chunk content and the filename. Essentially, a higher value gives the filename more influence in the final *composite* embedding.
+
+- 0.1: Filename contributes 10% (chunk content 90%)
+- 0.5 (maximum): Filename contributes 50% (chunk content 90%)