AI Tools 71% 1 min readJul 5, 2026, 7:50 AM

LlamaIndex ‘legal-kb’: Agentic Retrieval over Index v2 with retrieve, find, read, and grep Tools

30-second summary

LlamaIndex has released a public reference app called legal-kb that enables agents to interact with document knowledge bases using filesystem-style tools like retrieve, find, read, and grep.

LlamaIndex ‘legal-kb’: Agentic Retrieval over Index v2 with retrieve, find, read, and grep Tools
Key takeaways
  • legal-kb provides agents with filesystem-style tools (retrieve, find, read, grep) for interacting with document knowledge bases.
  • Hybrid semantic search and automatic versioning improve retrieval accuracy and traceability.
  • Built on Index v2 and modern stacks like AI SDK 6 and Prisma, ensuring scalability and reliability.
  • Serves as a public reference app for developers exploring agentic document retrieval workflows.
Full story

LlamaIndex has introduced legal-kb, a public reference application designed to give AI agents filesystem-style access to document knowledge bases. The app leverages LlamaIndex's Index v2 and exposes tools such as retrieve (hybrid semantic search), find, read, and grep, enabling agents to interact with documents more dynamically.

Key features include automatic per-file versioning and visual citations, which enhance traceability and reliability of retrieved information. The technical stack supporting legal-kb includes TanStack Start, AI SDK 6 (ToolLoopAgent), Prisma, and WorkOS, reflecting a modern and robust foundation for agentic workflows.

This release highlights LlamaIndex's focus on improving how AI agents handle document retrieval, moving beyond simple keyword searches to more sophisticated, tool-based interactions. The legal-kb app serves as both a practical tool and a reference implementation for developers building agentic systems.

Source: LlamaIndex ‘legal-kb’: Agentic Retrieval over Index v2 with retrieve, find, read, and grep Tools. Read the full piece at the source.

Why this matters
Developers

Provides a practical reference for building agentic systems with advanced document retrieval tools.

Businesses

Enables more efficient and accurate document processing for AI-driven workflows.

Everyone

Demonstrates the evolution of AI agents beyond simple queries to interactive document handling.

Glossary
agentic retrieval
AI systems that actively interact with data sources using tools rather than passive queries.
hybrid semantic search
Combines keyword-based and vector-based search methods for improved relevance.
Sources · 1
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