> ## Documentation Index
> Fetch the complete documentation index at: https://docs.lyzr.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Lyzr Blocks

> Standalone AI capabilities — knowledge, memory, and responsible AI as independent API endpoints.

# Lyzr Blocks

Lyzr Blocks are standalone AI capabilities — available as independent API endpoints
you can add to any application or agent framework. You don't need Agent Studio or
a full Lyzr agent to use them.

## Available blocks

### Knowledge Base

RAG-as-a-service. Create a knowledge base, upload documents, and query it from
any application — LangChain agents, Semantic Kernel, custom code.

The same Knowledge Base you build in Agent Studio is accessible as a standalone
service. One KB, used by any agent from any framework.

### Cognis (Memory)

Memory-as-a-service. Lyzr's production-grade memory module available via API
and MCP. Plug Cognis into any agent for cross-session, temporal-aware memory
without building a memory system yourself.

Available integrations: Cursor, Claude Desktop, Zed, Opencode, and any custom
agent via the Cognis MCP server or REST API.

### Responsible AI

Guardrails-as-a-service. Apply toxicity detection, PII redaction, prompt injection
protection, and content filtering to any pipeline — not just Lyzr agents.

### Voice Agents

Voice infrastructure for building conversational phone experiences. Includes
telephony integrations (Twilio, Telnyx, Plivo), real-time transcription, and
analytics — usable independently of Agent Studio.

## When to use Blocks vs. Agent Studio

Use **Blocks** when:

* You have existing infrastructure (LangChain, custom) and want to add one specific capability
* You want your KB or memory layer to be independent of the agent framework
* You're integrating into a non-Lyzr stack (e.g., a CrewAI or LangGraph pipeline)

Use **Agent Studio** when:

* You want the full agent experience: visual building, monitoring, eval, and governance
* You're building new agents from scratch rather than adding to an existing system