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letta-ai/letta
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1589
Launch ADE
letta-ai/letta
15104
1589
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Download
Guides and Concepts
API Reference
API Changelog
Cookbooks
Discord
Community Events
Letta API
API and SDK Overview
Agents
GET
List Agents
POST
Create Agent
GET
Download Agent Serialized
POST
Upload Agent Serialized
GET
Retrieve Agent
DEL
Delete Agent
PATCH
Modify Agent
PATCH
Modify Passage
PATCH
Reset Messages
POST
Search Deployed Agents
Context
Tools
Sources
Core Memory
Blocks
Passages
Messages
Templates
Memory Variables
Tools
GET
Retrieve Tool
DEL
Delete Tool
PATCH
Modify Tool
GET
List Tools
POST
Create Tool
PUT
Upsert Tool
POST
Upsert Base Tools
POST
Run Tool From Source
GET
List Composio Apps
GET
List Composio Actions By App
POST
Add Composio Tool
Sources
GET
Retrieve Source
DEL
Delete Source
PATCH
Modify Source
GET
Get Source Id By Name
GET
List Sources
POST
Create Source
Files
Passages
Identities
GET
List Identities
POST
Create Identity
PUT
Upsert Identity
GET
Retrieve Identity
DEL
Delete Identity
PATCH
Modify Identity
Models
GET
List Llm Backends
GET
List Embedding Backends
Blocks
GET
List Blocks
POST
Create Block
GET
Retrieve Block
DEL
Delete Block
PATCH
Modify Block
GET
List Agents For Block
Jobs
GET
List Jobs
GET
List Active Jobs
GET
Retrieve Job
DEL
Delete Job
Health
GET
Health Check
Providers
GET
List Providers
POST
Create Provider
DEL
Delete Provider
PATCH
Modify Provider
Runs
GET
List Runs
GET
List Active Runs
GET
Retrieve Run
DEL
Delete Run
GET
List Run Messages
GET
Retrieve Run Usage
GET
List Run Steps
Steps
GET
List Steps
GET
Retrieve Step
Tag
GET
List Tags
Voice
POST
Create Voice Chat Completions
Templates
POST
Create agents from a template
Launch ADE
Models
List Embedding Backends
GET
https://
app.letta.com
/
v1
/
models
/
embedding
Try it
Response
Successful Response
list of objects or null
Show 9 properties
List Blocks
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