https://docs.letta.com/guides/agents/context-engineering/
Context engineering | Letta Docs
Engineer agent context windows by controlling what information appears and when.
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https://docs.letta.com/guides/evals/extractors/custom/
Custom extractors | Letta Docs
Build custom extractors to parse specific information patterns from agent responses for evaluation.
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https://docs.letta.com/guides/ade/troubleshooting/
Troubleshooting the web ADE | Letta Docs
Troubleshoot ADE issues including connection problems and configuration errors.
ade letta docstroubleshooting
https://docs.letta.com/prompts/
Prompts for vibecoding | Letta Docs
Craft effective system prompts and instructions for Letta agents.
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Together | Letta Docs
Use Together AI's hosted models with Letta agents.
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https://docs.letta.com/guides/agents/prebuilt-tools/
Utilities | Letta Docs
Library of prebuilt tools for web search, code execution, and common agent operations.
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https://docs.letta.com/guides/ade/overview/
Agent Development Environment (ADE) | Letta Docs
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https://docs.letta.com/guides/ade/setup/
Connecting to the ADE | Letta Docs
Connect the Agent Development Environment to local or remote Letta servers.
ade letta docsconnecting
https://docs.letta.com/tutorials/rag-overview
RAG with Letta | Letta Docs
Overview of Retrieval-Augmented Generation patterns with Letta agents.
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Exporting archival memories | Letta Docs
Export archival memory data for backup, analysis, or migration to other systems.
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https://docs.letta.com/guides/ade/simulator/
Agent simulator | Letta Docs
letta docsagentsimulator
https://docs.letta.com/guides/selfhosting/performance/
Performance tuning | Letta Docs
Optimize self-hosted Letta server performance with caching, scaling, and resource management.
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https://docs.letta.com/guides/evals/graders/multi-metric/
Multi-metric evaluation | Letta Docs
Evaluate agents across multiple metrics simultaneously with composite grading functions.
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https://docs.letta.com/guides/evals/cli/commands/
CLI commands | Letta Docs
Command-line interface reference for running evaluations, managing datasets, and viewing results.
cli commandsletta docs
https://docs.letta.com/guides/server/source/
Installing Letta from source | Letta Docs
Install Letta server from source for development and customization.
installing lettasource docs
https://docs.letta.com/guides/ade/tools/
Tools | Letta Docs
tools letta docs
https://docs.letta.com/guides/evals/concepts/suites/
Suites | Letta Docs
letta docssuites
https://docs.letta.com/tutorials/voice-mode/
Activate voice mode | Letta Docs
Enable voice conversations with Letta agents using native voice integration for hands-free interaction.
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Core memory | Letta Docs
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Connecting agents to each other | Letta Docs
Connect independent agents with separate memory systems to communicate asynchronously with message delivery tools.
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https://docs.letta.com/guides/evals/overview/
Letta Evals | Letta Docs
Introduction to Letta's evaluation framework for testing and measuring agent performance.
lettaevalsdocs
https://docs.letta.com/guides/templates/versioning/
Versioning agent templates | Letta Docs
Letta Cloud versioning, releases, and upgrade paths.
agent templates lettadocs
https://docs.letta.com/guides/agents/context-hierarchy/
Context hierarchy | Letta Docs
Understand how Letta prioritizes different context sources in the agent's context window.
letta docscontexthierarchy
https://docs.letta.com/tutorials/shared-memory-blocks
Shared memory blocks | Letta Docs
Share memory blocks between agents to enable collaborative workflows with read and write access to common workspaces.
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https://docs.letta.com/guides/agents/run-code/
Code interpreter | Letta Docs
Enable agents to execute code safely with the code execution tool.
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https://docs.letta.com/guides/server/providers/deepseek/
DeepSeek | Letta Docs
Use DeepSeek language models with Letta agents.
letta docsdeepseek
https://docs.letta.com/guides/evals/results/overview/
Understanding results | Letta Docs
Understand evaluation results, metrics, and how to analyze agent performance data.
understanding resultsletta
https://docs.letta.com/guides/server/providers/google/
Google AI (Gemini) | Letta Docs
Configure Google's Gemini models for Letta agents.
google ailetta docsgemini
https://docs.letta.com/tutorials/rag-agentic/
Agentic RAG with Letta | Letta Docs
Build agentic RAG systems where agents decide when and what to retrieve.
agentic ragletta docs
https://docs.letta.com/guides/agents/memory/
Memory overview | Letta Docs
Understanding agent memory systems including core memory and archival memory in Letta.
letta docsmemoryoverview
https://docs.letta.com/guides/mcp/local/
Connecting Letta to local MCP servers | Letta Docs
Connect to MCP servers via standard input/output for local tool integrations.
mcp servers docsconnecting
https://docs.letta.com/guides/docker/performance/
Performance tuning | Letta Docs
Optimize Letta Docker server performance with caching, scaling, and resource management.
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Parallel tool calling | Letta Docs
Enable agents to call multiple tools simultaneously for efficient parallel execution.
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https://docs.letta.com/tutorials/attaching-detaching-blocks
Attaching and detaching memory blocks | Letta Docs
Dynamically attach and detach memory blocks to control what information agents can access during runtime.
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https://docs.letta.com/multimodal/
Multi-modal (image inputs) | Letta Docs
Build multimodal agents that process images, audio, and other non-text inputs.
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https://docs.letta.com/guides/selfhosting/pgadmin/
Inspecting your database | Letta Docs
Set up pgAdmin for managing PostgreSQL databases used by self-hosted Letta servers.
letta docsinspectingdatabase
https://docs.letta.com/guides/agents/multi-agent-custom-tools/
Building custom multi-agent tools | Letta Docs
Create custom multi-agent architectures with specialized orchestration patterns.
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https://docs.letta.com/guides/voice/vapi/
Building a Voice Agent with Letta and Vapi | Letta Docs
Complete guide to creating a voice-enabled AI agent using Letta for conversational AI and Vapi for voice infrastructure.
voice agentbuildinglettavapi
https://docs.letta.com/tutorials/custom-rag-integration/
Connect your custom RAG pipeline to a Letta agent | Letta Docs
Learn to integrate external vector databases like ChromaDB with Letta agents using standard and agentic RAG approaches.
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https://docs.letta.com/guides/legacy/naming-history/
Agent architecture naming history | Letta Docs
History of Letta naming conventions and the transition from MemGPT to Letta.
agent architectureletta docs
https://docs.letta.com/guides/agents/architectures/sleeptime/
Sleep-time agents | Letta Docs
Configure agent sleep time behavior for controlling response pacing and timing.
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https://docs.letta.com/guides/server/providers/xai/
xAI (Grok) | Letta Docs
Configure xAI (X.AI) language models for Letta agents.
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https://docs.letta.com/guides/evals/concepts/gates/
Gates | Letta Docs
Learn about evaluation gates that filter and control which test cases run based on conditions.
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Your first Letta agent | Letta Docs
Create your first stateful Letta agent, send messages, and see how it automatically updates its persistent memory.
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https://docs.letta.com/guides/ade/context-window-viewer/
Context window viewer | Letta Docs
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https://docs.letta.com/guides/agents/web-search/
Web search | Letta Docs
Enable agents to search the web and retrieve current information with built-in web search tools.
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Build a multi-agent system with Letta | Letta Docs
Build orchestrated multi-agent systems where a coordinator agent manages multiple worker agents for complex tasks.
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https://docs.letta.com/guides/server/providers/lmstudio/
LM Studio | Letta Docs
Connect Letta agents to locally hosted models via LM Studio.
lm studioletta docs
https://docs.letta.com/guides/legacy/react-agents-legacy/
ReAct agents (legacy) | Letta Docs
Legacy ReAct agent architecture documentation for tool-based reasoning agents.
agents legacy lettareactdocs
https://docs.letta.com/guides/server/providers/openai-proxy/
OpenAI-compatible endpoint | Letta Docs
Connect to OpenAI-compatible API proxies and custom endpoints.
openai compatibleletta docs
https://docs.letta.com/guides/legacy/heartbeats-legacy/
Heartbeats (legacy) | Letta Docs
Legacy documentation for heartbeat-based agent orchestration patterns in older Letta versions.
legacy letta docsheartbeats
https://docs.letta.com/tutorials/customer-specific-agents/
Building customer-specific relationship agents with Letta | Letta Docs
Create dedicated agents for each customer using templates, persistent memory, and personalized communication tools.
building customerletta docs
https://docs.letta.com/guides/agents/overview/
Building stateful agents | Letta Docs
Comprehensive guide to Letta agents including creation, configuration, and management.
agents letta docsbuilding
https://docs.letta.com/guides/agents/filesystem/
Letta Filesystem | Letta Docs
Store and manage files for agent access with the Letta Filesystem API.
lettafilesystemdocs
https://docs.letta.com/guides/agents/groups/
Groups | Letta Docs
Organize agents into groups for shared resources and collaborative workflows.
letta docsgroups
https://docs.letta.com/guides/agents/multi-user/
User identities | Letta Docs
Build multi-user applications with agent state isolation and shared resources.
user identitiesletta docs
https://docs.letta.com/quickstart/
Developer quickstart | Letta Docs
Quick start guide to creating your first Letta agent and sending messages.
quickstart letta docs
https://docs.letta.com/concepts/letta/
Research background | Letta Docs
Core concepts of the Letta framework including agents, services, and APIs.
letta docsresearchbackground
https://docs.letta.com/guides/server/remote/
Deploying a Letta server remotely | Letta Docs
Deploy Letta servers to remote cloud environments and manage remote deployments.
deployinglettaserverremotely
https://docs.letta.com/guides/ade/archival-memory/
Archival memory | Letta Docs
archival memory lettadocs
https://docs.letta.com/letta-code/models
Models | Letta Docs
Use any model with Letta Code
letta docsmodels
https://docs.letta.com/guides/evals/extractors/builtin/
Built-in extractors | Letta Docs
Use built-in extractors for common patterns like JSON extraction, tool calls, and message content.
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https://docs.letta.com/guides/evals/graders/rubric-graders/
Rubric Graders | Letta Docs
Use rubric-based grading with predefined criteria to evaluate agent responses consistently.
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https://docs.letta.com/guides/templates/client-side-tokens/
Client-side access tokens | Letta Docs
Generate client-side tokens for browser-based applications using Letta Cloud.
client sideaccess tokensletta
https://docs.letta.com/guides/evals/concepts/overview/
Core concepts | Letta Docs
Core concepts of the Letta evaluation framework including targets, datasets, graders, and extractors.
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Quickstart | Letta Docs
Learn the basics of Letta Code
quickstart letta docs
https://docs.letta.com/guides/server/providers/openai/
OpenAI | Letta Docs
Configure OpenAI models including GPT-4 and GPT-3.5 for Letta agents.
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https://docs.letta.com/api-reference/overview
The Letta API | Letta Docs
Introduction to the Letta API including REST endpoints and authentication.
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Connecting Letta to MCP Servers | Letta Docs
Set up Model Context Protocol servers and configure agent connections.
mcp servers docsconnecting
https://docs.letta.com/guides/mcp/remote/
Connecting Letta to remote MCP servers | Letta Docs
Use Server-Sent Events (SSE) for real-time communication with Model Context Protocol servers.
remote mcp serversconnecting
https://docs.letta.com/guides/agents/tool-variables/
Using tool variables | Letta Docs
Pass dynamic variables to tools for context-aware function execution.
variables letta docsusingtool
https://docs.letta.com/guides/templates/variables/
Memory variables | Letta Docs
Manage environment variables and configuration in Letta Cloud deployments.
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Tutorials | Letta Docs
Step-by-step guides for building with Letta
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Collecting traces & telemetry | Letta Docs
Configure telemetry and observability for monitoring Letta server performance.
letta docscollectingtraces
https://docs.letta.com/letta-code
Letta Code | Letta Docs
The memory-first coding agent that lives in your terminal
code docsletta
https://docs.letta.com/guides/ade/desktop/
Installing Letta Desktop | Letta Docs
Install Letta Desktop application on macOS, Windows, and Linux.
letta desktop docsinstalling
https://docs.letta.com/guides/evals/concepts/graders/
Graders | Letta Docs
Use graders to score agent outputs and determine success criteria for evaluation test cases.
graders letta docs
https://docs.letta.com/guides/agents/archival-search/
Searching & querying | Letta Docs
Search agent archival memory with semantic and keyword-based queries.
letta docssearchingquerying
https://docs.letta.com/guides/selfhosting/supported-models/
Supported models | Letta Docs
Complete list of supported LLM providers and models compatible with Letta agents.
letta docssupportedmodels
https://docs.letta.com/guides/server/providers/anthropic/
Anthropic | Letta Docs
Configure Anthropic's Claude models for Letta agents.
letta docsanthropic
https://docs.letta.com/tutorials/multi-user
Serving multiple users | Letta Docs
Build Letta applications that serve multiple users with isolated agent instances and shared resources.
multiple usersletta docs
https://docs.letta.com/guides/legacy/low-latency-agents-legacy/
Low-latency agents (legacy) | Letta Docs
Legacy guide for optimizing agent response latency in pre-1.0 Letta versions.
agents legacy lettalowlatency
https://docs.letta.com/guides/evals/troubleshooting/
Troubleshooting | Letta Docs
Common issues and solutions when running evaluations, debugging failures, and optimizing performance.
troubleshooting lettadocs
https://docs.letta.com/guides/selfhosting/postgres/
Database configuration | Letta Docs
Configure PostgreSQL as the backend database for self-hosted Letta deployments.
letta docsdatabase
https://docs.letta.com/guides/legacy/workflows-legacy/
Workflows (legacy) | Letta Docs
Legacy workflows and orchestration patterns for multi-agent systems in older versions.
legacy letta docsworkflows
https://docs.letta.com/letta-code/skills
Skills | Letta Docs
Create and use reusable skills to extend your agent's capabilities
letta docsskills
https://docs.letta.com/guides/server/providers/aws-bedrock/
AWS Bedrock | Letta Docs
Configure AWS Bedrock models including Claude and Titan for Letta agents.
aws bedrockletta docs
https://docs.letta.com/guides/telegram-bot/
Using the Letta Telegram Bot | Letta Docs
Chat with Letta agents via Telegram using @letta_ai_bot with memory management, templates, and proactive notifications.
telegram botusinglettadocs
https://docs.letta.com/guides/agents/archival-memory/
Archival memory | Letta Docs
Overview of archival memory for long-term information storage beyond context window limits.
archival memory lettadocs
https://docs.letta.com/guides/agents/json-mode/
JSON mode & structured output | Letta Docs
Use JSON mode to structure agent outputs in valid JSON format for downstream processing.
structured outputletta docs
https://docs.letta.com/tutorials/integrations/
Integrations | Letta Docs
Build bots for Discord, Telegram, and other popular platforms with Letta
letta docsintegrations
https://docs.letta.com/guides/agents/base-tools/
Base tools | Letta Docs
Core memory management tools available to all Letta agents by default.
tools letta docsbase
https://docs.letta.com/guides/agents/long-running/
Long-running executions | Letta Docs
Build long-running agents that maintain state across extended time periods.
long runningletta docs
https://docs.letta.com/guides/ade/browser/
Accessing the web ADE | Letta Docs
ade letta docsaccessingweb
https://docs.letta.com/tutorials/memory/
Memory management | Letta Docs
Dynamic memory management and personalization techniques for advanced agent behavior
memory managementletta docs
https://docs.letta.com/guides/agents/scheduling/
Scheduling | Letta Docs
Schedule agent executions at specific times or intervals for automated workflows.
letta docsscheduling
https://docs.letta.com/tutorials/rag-simple
Simple RAG with Letta | Letta Docs
Build simple RAG applications with client-controlled retrieval and context injection.
letta docssimplerag
https://docs.letta.com/guides/evals/advanced/custom-graders/
Custom Graders | Letta Docs
Build custom grading functions to evaluate agent outputs with domain-specific scoring logic.
graders letta docscustom
https://docs.letta.com/guides/evals/getting-started/
Getting started | Letta Docs
Get started with Letta evaluations by creating datasets, running tests, and analyzing agent outputs.
getting startedletta docs
https://docs.letta.com/guides/server/providers/google-vertex/
Google Vertex AI | Letta Docs
Use Google Cloud Vertex AI models with Letta agents in GCP environments.
google vertexletta docsai