Skip to main content
GET
/
api
/
v0
/
sessions
/
{sessionId}
/
messages
/
{messageId}
Get a message by ID
curl --request GET \
  --url https://api.factory.ai/api/v0/sessions/{sessionId}/messages/{messageId} \
  --header 'Authorization: Bearer <token>'
{
  "id": "<string>",
  "role": "user",
  "content": [
    {
      "type": "text",
      "text": "<string>",
      "id": "<string>"
    }
  ],
  "createdAt": 123,
  "updatedAt": 123,
  "parentId": "<string>",
  "visibility": "both",
  "openaiMessageId": "<string>",
  "openaiPhase": "commentary",
  "openaiEncryptedContent": "<string>",
  "openaiReasoningId": "<string>",
  "openaiReasoningSummary": "<string>",
  "geminiThoughtSignature": "<string>",
  "chatCompletionReasoningField": "reasoning",
  "chatCompletionReasoningContent": "<string>",
  "isUserVisible": true,
  "isError": true
}

Documentation Index

Fetch the complete documentation index at: https://factory-docs-auto-sync-jp-docs.mintlify.app/llms.txt

Use this file to discover all available pages before exploring further.

Authorizations

​
Authorization
string
header
required

Factory API key or JWT token for authentication

Path Parameters

​
sessionId
string
required

Session ID

​
messageId
string
required

Message ID

Query Parameters

​
computerId
string

Computer ID to query directly

Response

Response for status 200

​
id
string
required
​
role
enum<string>
required
Available options:
user,
assistant,
tool,
system
​
content
object[]
required
​
createdAt
number
required
​
updatedAt
number
required
​
parentId
string
​
visibility
enum<string>
Available options:
both,
llm_only,
user_only
​
openaiMessageId
string
​
openaiPhase
enum<string> | null
Available options:
commentary,
final_answer
​
openaiEncryptedContent
string
​
openaiReasoningId
string
​
openaiReasoningSummary
string
​
geminiThoughtSignature
string
​
chatCompletionReasoningField
enum<string>
Available options:
reasoning,
reasoning_content
​
chatCompletionReasoningContent
string
​
isUserVisible
boolean
​
isError
boolean