diff --git a/api/controllers/console/agent/roster.py b/api/controllers/console/agent/roster.py
index eff4f910dae..14d5da7f635 100644
--- a/api/controllers/console/agent/roster.py
+++ b/api/controllers/console/agent/roster.py
@@ -186,6 +186,7 @@ class AgentStatisticsQuery(BaseModel):
 
 class AgentAppPartial(GenericAppPartial):
     app_id: str | None = None
+    debug_conversation_id: str | None = None
     role: str | None = None
     active_config_is_published: bool = False
     published_reference_count: int = 0
@@ -194,6 +195,7 @@ class AgentAppPartial(GenericAppPartial):
 
 class AgentAppDetailWithSite(GenericAppDetailWithSite):
     app_id: str | None = None
+    debug_conversation_id: str | None = None
     role: str | None = None
     active_config_is_published: bool = False
 
@@ -262,6 +264,7 @@ def _serialize_agent_app_detail(app_model) -> dict:
     payload.pop("bound_agent_id", None)
     payload["app_id"] = str(app_model.id)
     payload["id"] = agent.id
+    payload["debug_conversation_id"] = agent.debug_conversation_id
     payload["role"] = agent.role or ""
     payload["active_config_is_published"] = roster_service.active_config_is_published(
         tenant_id=app_model.tenant_id,
@@ -301,6 +304,7 @@ def _serialize_agent_app_pagination(app_pagination, *, tenant_id: str) -> dict:
         if agent:
             item["app_id"] = app_id
             item["id"] = agent.id
+            item["debug_conversation_id"] = agent.debug_conversation_id
             item["role"] = agent.role or ""
             item["active_config_is_published"] = active_config_is_published_by_agent_id.get(agent.id, False)
             published_references = published_references_by_agent_id.get(agent.id, [])
diff --git a/api/migrations/versions/2026_06_22_1000-c8f4a6b2d3e1_add_agent_debug_conversation_id.py b/api/migrations/versions/2026_06_22_1000-c8f4a6b2d3e1_add_agent_debug_conversation_id.py
new file mode 100644
index 00000000000..8e0ea3284c9
--- /dev/null
+++ b/api/migrations/versions/2026_06_22_1000-c8f4a6b2d3e1_add_agent_debug_conversation_id.py
@@ -0,0 +1,30 @@
+"""add agent debug conversation id
+
+Revision ID: c8f4a6b2d3e1
+Revises: b2515f9d4c2a
+Create Date: 2026-06-22 10:00:00.000000
+
+"""
+
+import sqlalchemy as sa
+from alembic import op
+
+import models
+
+# revision identifiers, used by Alembic.
+revision = "c8f4a6b2d3e1"
+down_revision = "b2515f9d4c2a"
+branch_labels = None
+depends_on = None
+
+
+def upgrade():
+    with op.batch_alter_table("agents", schema=None) as batch_op:
+        batch_op.add_column(sa.Column("debug_conversation_id", models.types.StringUUID(), nullable=True))
+        batch_op.create_index("agent_debug_conversation_id_idx", ["debug_conversation_id"], unique=False)
+
+
+def downgrade():
+    with op.batch_alter_table("agents", schema=None) as batch_op:
+        batch_op.drop_index("agent_debug_conversation_id_idx")
+        batch_op.drop_column("debug_conversation_id")
diff --git a/api/models/agent.py b/api/models/agent.py
index 1905377359f..6500eecafea 100644
--- a/api/models/agent.py
+++ b/api/models/agent.py
@@ -135,6 +135,7 @@ class Agent(DefaultFieldsMixin, Base):
         Index("agent_tenant_workflow_id_idx", "tenant_id", "workflow_id"),
         Index("agent_tenant_app_id_idx", "tenant_id", "app_id"),
         Index("agent_active_config_snapshot_id_idx", "active_config_snapshot_id"),
+        Index("agent_debug_conversation_id_idx", "debug_conversation_id"),
         Index(
             "agent_tenant_invitable_idx",
             "tenant_id",
@@ -162,6 +163,7 @@ class Agent(DefaultFieldsMixin, Base):
     scope: Mapped[AgentScope] = mapped_column(EnumText(AgentScope, length=32), nullable=False)
     source: Mapped[AgentSource] = mapped_column(EnumText(AgentSource, length=32), nullable=False)
     app_id: Mapped[str | None] = mapped_column(StringUUID, nullable=True)
+    debug_conversation_id: Mapped[str | None] = mapped_column(StringUUID, nullable=True)
     workflow_id: Mapped[str | None] = mapped_column(StringUUID, nullable=True)
     workflow_node_id: Mapped[str | None] = mapped_column(String(255), nullable=True)
     active_config_snapshot_id: Mapped[str | None] = mapped_column(StringUUID, nullable=True)
diff --git a/api/openapi/markdown/console-openapi.md b/api/openapi/markdown/console-openapi.md
index 5d3407f4159..6f507b889b6 100644
--- a/api/openapi/markdown/console-openapi.md
+++ b/api/openapi/markdown/console-openapi.md
@@ -12066,6 +12066,7 @@ Default namespace
 | bound_agent_id | string |  | No |
 | created_at | integer |  | No |
 | created_by | string |  | No |
+| debug_conversation_id | string |  | No |
 | deleted_tools | [ [DeletedTool](#deletedtool) ] |  | No |
 | description | string |  | No |
 | enable_api | boolean |  | Yes |
@@ -12129,6 +12130,7 @@ default (the config form sends the full desired feature state on save).
 | create_user_name | string |  | No |
 | created_at | integer |  | No |
 | created_by | string |  | No |
+| debug_conversation_id | string |  | No |
 | description | string |  | No |
 | has_draft_trigger | boolean |  | No |
 | icon | string |  | No |
diff --git a/api/services/agent/roster_service.py b/api/services/agent/roster_service.py
index 00ea86859d8..1ec4f29e6bb 100644
--- a/api/services/agent/roster_service.py
+++ b/api/services/agent/roster_service.py
@@ -3,6 +3,7 @@ from typing import Any, TypedDict
 from sqlalchemy import and_, func, or_, select
 from sqlalchemy.exc import IntegrityError
 
+from core.app.entities.app_invoke_entities import InvokeFrom
 from libs.datetime_utils import naive_utc_now
 from libs.helper import to_timestamp
 from models.agent import (
@@ -18,8 +19,8 @@ from models.agent import (
     WorkflowAgentNodeBinding,
 )
 from models.agent_config_entities import AgentSoulConfig
-from models.enums import AppStatus
-from models.model import App, AppMode, IconType
+from models.enums import AppStatus, ConversationFromSource, ConversationStatus
+from models.model import App, AppMode, Conversation, IconType
 from models.workflow import Workflow
 from services.agent.agent_soul_state import agent_soul_has_model
 from services.agent.composer_validator import ComposerConfigValidator
@@ -96,6 +97,7 @@ class AgentRosterService:
             "scope": agent.scope.value,
             "source": agent.source.value,
             "app_id": agent.app_id,
+            "debug_conversation_id": getattr(agent, "debug_conversation_id", None),
             "workflow_id": agent.workflow_id,
             "workflow_node_id": agent.workflow_node_id,
             "active_config_snapshot_id": agent.active_config_snapshot_id,
@@ -391,9 +393,38 @@ class AgentRosterService:
         self._session.add(revision)
         agent.active_config_snapshot_id = version.id
         agent.active_config_has_model = agent_soul_has_model(AgentSoulConfig())
+        agent.debug_conversation_id = self._create_agent_app_debug_conversation(
+            app_id=app_id,
+            account_id=account_id,
+        )
         self._session.flush()
         return agent
 
+    def _create_agent_app_debug_conversation(self, *, app_id: str, account_id: str) -> str:
+        """Create the stable console conversation used by Agent App debug mode."""
+
+        conversation = Conversation(
+            app_id=app_id,
+            app_model_config_id=None,
+            model_provider=None,
+            model_id="",
+            override_model_configs=None,
+            mode=AppMode.AGENT,
+            name="Agent Debugging Conversation",
+            inputs={},
+            introduction="",
+            system_instruction="",
+            system_instruction_tokens=0,
+            status=ConversationStatus.NORMAL,
+            invoke_from=InvokeFrom.DEBUGGER,
+            from_source=ConversationFromSource.CONSOLE,
+            from_end_user_id=None,
+            from_account_id=account_id,
+        )
+        self._session.add(conversation)
+        self._session.flush()
+        return conversation.id
+
     def load_app_backing_agents_by_app_id(self, *, tenant_id: str, app_ids: list[str]) -> dict[str, Agent]:
         """Return active app-backed Agents keyed by Agent App id."""
         if not app_ids:
diff --git a/api/tests/unit_tests/controllers/console/agent/test_agent_controllers.py b/api/tests/unit_tests/controllers/console/agent/test_agent_controllers.py
index 36f98047738..cf02dd3bcc5 100644
--- a/api/tests/unit_tests/controllers/console/agent/test_agent_controllers.py
+++ b/api/tests/unit_tests/controllers/console/agent/test_agent_controllers.py
@@ -219,14 +219,22 @@ def test_agent_app_list_and_create_use_agent_route(
         roster_controller.AgentRosterService,
         "load_app_backing_agents_by_app_id",
         lambda _self, **kwargs: {
-            "app-list": SimpleNamespace(id="agent-list", role="List role", active_config_snapshot_id=None)
+            "app-list": SimpleNamespace(
+                id="agent-list",
+                role="List role",
+                debug_conversation_id="debug-conversation-list",
+                active_config_snapshot_id=None,
+            )
         },
     )
     monkeypatch.setattr(
         roster_controller.AgentRosterService,
         "get_app_backing_agent",
         lambda _self, **kwargs: SimpleNamespace(
-            id="agent-created", role="Created role", active_config_snapshot_id=None
+            id="agent-created",
+            role="Created role",
+            debug_conversation_id="debug-conversation-created",
+            active_config_snapshot_id=None,
         ),
     )
     monkeypatch.setattr(
@@ -263,6 +271,7 @@ def test_agent_app_list_and_create_use_agent_route(
     assert listed["total"] == 1
     assert listed["data"][0]["id"] == "agent-list"
     assert listed["data"][0]["app_id"] == "app-list"
+    assert listed["data"][0]["debug_conversation_id"] == "debug-conversation-list"
     assert listed["data"][0]["role"] == "List role"
     assert listed["data"][0]["active_config_is_published"] is False
     assert listed["data"][0]["published_reference_count"] == 1
@@ -296,6 +305,7 @@ def test_agent_app_list_and_create_use_agent_route(
     assert status == 201
     assert created["id"] == "agent-created"
     assert created["app_id"] == "app-created"
+    assert created["debug_conversation_id"] == "debug-conversation-created"
     assert created["role"] == "Created role"
     assert created["active_config_is_published"] is False
     assert "bound_agent_id" not in created
@@ -336,7 +346,12 @@ def test_agent_app_detail_update_delete_resolve_app_from_agent_id(
     monkeypatch.setattr(
         roster_controller.AgentRosterService,
         "get_app_backing_agent",
-        lambda _self, **kwargs: SimpleNamespace(id=agent_id, role="Resolved role", active_config_snapshot_id=None),
+        lambda _self, **kwargs: SimpleNamespace(
+            id=agent_id,
+            role="Resolved role",
+            debug_conversation_id="debug-conversation-detail",
+            active_config_snapshot_id=None,
+        ),
     )
     monkeypatch.setattr(
         roster_controller.FeatureService,
@@ -361,6 +376,7 @@ def test_agent_app_detail_update_delete_resolve_app_from_agent_id(
     detail = unwrap(AgentAppApi.get)(AgentAppApi(), "tenant-1", agent_id)
     assert detail["id"] == agent_id
     assert detail["app_id"] == "app-1"
+    assert detail["debug_conversation_id"] == "debug-conversation-detail"
     assert detail["role"] == "Resolved role"
     assert detail["active_config_is_published"] is False
     assert "bound_agent_id" not in detail
@@ -374,6 +390,7 @@ def test_agent_app_detail_update_delete_resolve_app_from_agent_id(
     assert updated["name"] == "Renamed"
     assert updated["id"] == agent_id
     assert updated["app_id"] == "app-1"
+    assert updated["debug_conversation_id"] == "debug-conversation-detail"
     assert updated["role"] == "Resolved role"
     assert updated["active_config_is_published"] is False
     assert "bound_agent_id" not in updated
@@ -445,7 +462,12 @@ def test_agent_app_update_rejects_empty_role(app: Flask, monkeypatch: pytest.Mon
     monkeypatch.setattr(
         roster_controller.AgentRosterService,
         "get_app_backing_agent",
-        lambda _self, **kwargs: SimpleNamespace(id=agent_id, role="", active_config_snapshot_id=None),
+        lambda _self, **kwargs: SimpleNamespace(
+            id=agent_id,
+            role="",
+            debug_conversation_id="debug-conversation-detail",
+            active_config_snapshot_id=None,
+        ),
     )
     monkeypatch.setattr(
         roster_controller.FeatureService,
diff --git a/api/tests/unit_tests/services/agent/test_agent_services.py b/api/tests/unit_tests/services/agent/test_agent_services.py
index e5acc43c52b..e6ca3bb7ca0 100644
--- a/api/tests/unit_tests/services/agent/test_agent_services.py
+++ b/api/tests/unit_tests/services/agent/test_agent_services.py
@@ -23,7 +23,8 @@ from models.agent_config_entities import (
     DeclaredOutputType,
     WorkflowNodeJobConfig,
 )
-from models.model import IconType
+from models.enums import ConversationFromSource, ConversationStatus
+from models.model import Conversation, IconType
 from models.workflow import Workflow
 from services.agent import composer_service, roster_service
 from services.agent.agent_soul_state import agent_soul_has_model
@@ -1353,6 +1354,7 @@ class TestAgentAppBackingAgent:
         assert agent.agent_kind == AgentKind.DIFY_AGENT
         assert agent.name == "Iris"
         assert agent.role == "research assistant"
+        assert agent.debug_conversation_id is not None
         # A v1 snapshot + revision are seeded and wired as the active version.
         snapshots = [a for a in session.added if isinstance(a, AgentConfigSnapshot)]
         assert len(snapshots) == 1
@@ -1362,6 +1364,14 @@ class TestAgentAppBackingAgent:
             a for a in session.added if getattr(a, "operation", None) == AgentConfigRevisionOperation.CREATE_VERSION
         ]
         assert len(revisions) == 1
+        conversations = [a for a in session.added if isinstance(a, Conversation)]
+        assert len(conversations) == 1
+        assert agent.debug_conversation_id == conversations[0].id
+        assert conversations[0].app_id == "app-1"
+        assert conversations[0].mode == "agent"
+        assert conversations[0].status == ConversationStatus.NORMAL
+        assert conversations[0].from_source == ConversationFromSource.CONSOLE
+        assert conversations[0].from_account_id == "account-1"
         # Caller (AppService.create_app) owns the commit — helper must not commit.
         assert session.commits == 0
 
diff --git a/packages/contracts/generated/api/console/agent/types.gen.ts b/packages/contracts/generated/api/console/agent/types.gen.ts
index 7b82989af89..74acc33ed43 100644
--- a/packages/contracts/generated/api/console/agent/types.gen.ts
+++ b/packages/contracts/generated/api/console/agent/types.gen.ts
@@ -29,6 +29,7 @@ export type AgentAppDetailWithSite = {
   bound_agent_id?: string | null
   created_at?: number | null
   created_by?: string | null
+  debug_conversation_id?: string | null
   deleted_tools?: Array<DeletedTool>
   description?: string | null
   enable_api: boolean
@@ -329,6 +330,7 @@ export type AgentAppPartial = {
   create_user_name?: string | null
   created_at?: number | null
   created_by?: string | null
+  debug_conversation_id?: string | null
   description?: string | null
   has_draft_trigger?: boolean | null
   icon?: string | null
@@ -1501,6 +1503,7 @@ export type AgentAppDetailWithSiteWritable = {
   bound_agent_id?: string | null
   created_at?: number | null
   created_by?: string | null
+  debug_conversation_id?: string | null
   deleted_tools?: Array<DeletedTool>
   description?: string | null
   enable_api: boolean
@@ -1534,6 +1537,7 @@ export type AgentAppPartialWritable = {
   create_user_name?: string | null
   created_at?: number | null
   created_by?: string | null
+  debug_conversation_id?: string | null
   description?: string | null
   has_draft_trigger?: boolean | null
   icon?: string | null
diff --git a/packages/contracts/generated/api/console/agent/zod.gen.ts b/packages/contracts/generated/api/console/agent/zod.gen.ts
index ec9f5b0107b..b35427c8bd0 100644
--- a/packages/contracts/generated/api/console/agent/zod.gen.ts
+++ b/packages/contracts/generated/api/console/agent/zod.gen.ts
@@ -684,6 +684,7 @@ export const zAgentAppPartial = z.object({
   create_user_name: z.string().nullish(),
   created_at: z.int().nullish(),
   created_by: z.string().nullish(),
+  debug_conversation_id: z.string().nullish(),
   description: z.string().nullish(),
   has_draft_trigger: z.boolean().nullish(),
   icon: z.string().nullish(),
@@ -747,6 +748,7 @@ export const zAgentAppDetailWithSite = z.object({
   bound_agent_id: z.string().nullish(),
   created_at: z.int().nullish(),
   created_by: z.string().nullish(),
+  debug_conversation_id: z.string().nullish(),
   deleted_tools: z.array(zDeletedTool).optional(),
   description: z.string().nullish(),
   enable_api: z.boolean(),
@@ -2086,6 +2088,7 @@ export const zAgentAppPartialWritable = z.object({
   create_user_name: z.string().nullish(),
   created_at: z.int().nullish(),
   created_by: z.string().nullish(),
+  debug_conversation_id: z.string().nullish(),
   description: z.string().nullish(),
   has_draft_trigger: z.boolean().nullish(),
   icon: z.string().nullish(),
@@ -2150,6 +2153,7 @@ export const zAgentAppDetailWithSiteWritable = z.object({
   bound_agent_id: z.string().nullish(),
   created_at: z.int().nullish(),
   created_by: z.string().nullish(),
+  debug_conversation_id: z.string().nullish(),
   deleted_tools: z.array(zDeletedTool).optional(),
   description: z.string().nullish(),
   enable_api: z.boolean(),