Agents Messages · SQLite Schema · n8n-io/n8n · Skills Docs

Agents Messages · SQLite Schema · n8n-io/n8n · Skills Docs

CREATE TABLE "agents_messages" ("id" varchar(36) PRIMARY KEY NOT NULL, "threadId" varchar(255) NOT NULL, "resourceId" varchar(255) NOT NULL, "role" varchar(36) NOT NULL, "type" varchar(36), "content" text NOT NULL, "createdAt" datetime(3) NOT NULL DEFAULT (STRFTIME('%Y-%m-%d %H:%M:%f', 'NOW')), "updatedAt" datetime(3) NOT NULL DEFAULT (STRFTIME('%Y-%m-%d %H:%M:%f', 'NOW')), "author" TEXT, "origin" TEXT, "modelContent" TEXT, "modelContextAt" DATETIME, CONSTRAINT "FK_0a8057a61afabd2999608ffd0d9" FOREIGN KEY ("threadId") REFERENCES "agents_threads" ("id") ON DELETE CASCADE)

Name	Type	Default	Nullable	Children	Parents	Comment
author	TEXT		true
content	TEXT		false
createdAt	datetime(3)	STRFTIME(‘%Y-%m-%d %H:%M:%f’, ‘NOW’)	false
id	varchar(36)		false	agent_execution_message_links agent_message_queue agents_memory_entry_candidates
modelContent	TEXT		true
modelContextAt	DATETIME		true
origin	TEXT		true
resourceId	varchar(255)		false
role	varchar(36)		false
threadId	varchar(255)		false		agents_threads
type	varchar(36)		true
updatedAt	datetime(3)	STRFTIME(‘%Y-%m-%d %H:%M:%f’, ‘NOW’)	false

Name	Type	Definition
- (Foreign key ID: 0)	FOREIGN KEY	FOREIGN KEY (threadId) REFERENCES agents_threads (id) ON UPDATE NO ACTION ON DELETE CASCADE MATCH NONE
id	PRIMARY KEY	PRIMARY KEY (id)
sqlite_autoindex_agents_messages_1	PRIMARY KEY	PRIMARY KEY (id)

Name	Definition
IDX_agents_messages_model_context	CREATE INDEX “IDX_agents_messages_model_context” ON “agents_messages” (“threadId”, COALESCE(“modelContextAt”, “createdAt”), “id”)
IDX_agents_messages_resourceId_threadId	CREATE INDEX “IDX_agents_messages_resourceId_threadId” ON “agents_messages” (“resourceId”, “threadId”)
IDX_agents_messages_threadId_createdAt	CREATE INDEX “IDX_agents_messages_threadId_createdAt” ON “agents_messages” (“threadId”, “createdAt”)
IDX_fc7bf858660bfafd19181e8e35	CREATE INDEX “IDX_fc7bf858660bfafd19181e8e35” ON “agents_messages” (“threadId”, “createdAt”)
sqlite_autoindex_agents_messages_1	PRIMARY KEY (id)

erDiagram

"agent_execution_message_links" |o--|| "agents_messages" : "FOREIGN KEY (messageId) REFERENCES agents_messages (id) ON UPDATE NO ACTION ON DELETE CASCADE MATCH NONE"
"agent_message_queue" }o--|| "agents_messages" : "FOREIGN KEY (messageId) REFERENCES agents_messages (id) ON UPDATE NO ACTION ON DELETE CASCADE MATCH NONE"
"agents_memory_entry_candidates" }o--o| "agents_messages" : "FOREIGN KEY (sourceMessageId) REFERENCES agents_messages (id) ON UPDATE NO ACTION ON DELETE SET NULL MATCH NONE"
"agents_messages" }o--|| "agents_threads" : "FOREIGN KEY (threadId) REFERENCES agents_threads (id) ON UPDATE NO ACTION ON DELETE CASCADE MATCH NONE"

"agents_messages" {
  TEXT author
  TEXT content
  datetime_3_ createdAt
  varchar_36_ id PK
  TEXT modelContent
  DATETIME modelContextAt
  TEXT origin
  varchar_255_ resourceId
  varchar_36_ role
  varchar_255_ threadId FK
  varchar_36_ type
  datetime_3_ updatedAt
}
"agent_execution_message_links" {
  datetime_3_ createdAt
  varchar_6_ direction
  varchar_36_ executionId PK
  varchar_36_ messageId PK
  INTEGER position
}
"agent_message_queue" {
  datetime_3_ createdAt
  varchar_36_ executionId FK
  INTEGER id
  varchar_36_ messageId FK
  TEXT payload
  INTEGER position
  varchar_36_ steeringExecutionId FK
  INTEGER steeringOrder
  varchar_128_ threadId FK
  datetime_3_ updatedAt
}
"agents_memory_entry_candidates" {
  varchar_36_ agentId FK
  smallint attemptCount
  TEXT content
  datetime_3_ createdAt
  TEXT evidenceText
  varchar_36_ id PK
  varchar_32_ kind
  varchar_255_ resourceId FK
  varchar_255_ runId
  varchar_36_ sourceMessageId FK
  varchar_16_ status
  varchar_255_ threadId FK
  varchar_255_ toolCallId
  datetime_3_ updatedAt
}
"agents_threads" {
  datetime_3_ createdAt
  varchar_128_ id PK
  TEXT metadata
  varchar_255_ resourceId
  varchar_255_ title
  datetime_3_ updatedAt
}