diff --git a/letta/orm/block_history.py b/letta/orm/block_history.py
index de1b0c5d..20828124 100644
--- a/letta/orm/block_history.py
+++ b/letta/orm/block_history.py
@@ -4,9 +4,9 @@ from typing import Optional
 from sqlalchemy import JSON, BigInteger, ForeignKey, Index, Integer, String, Text
 from sqlalchemy.orm import Mapped, mapped_column
 
-from letta.orm.enums import ActorType
 from letta.orm.mixins import OrganizationMixin
 from letta.orm.sqlalchemy_base import SqlalchemyBase
+from letta.schemas.enums import ActorType
 
 
 class BlockHistory(OrganizationMixin, SqlalchemyBase):
diff --git a/letta/orm/enums.py b/letta/orm/enums.py
index 1bb549a1..c885780b 100644
--- a/letta/orm/enums.py
+++ b/letta/orm/enums.py
@@ -1,3 +1,9 @@
+"""Compatibility module for enums that were moved to address circular imports.
+
+This module maintains the old enum definitions for backwards compatibility,
+especially for pickled objects that reference the old import paths.
+"""
+
 from enum import Enum
 
 
@@ -14,28 +20,3 @@ class ToolType(str, Enum):
     EXTERNAL_LANGCHAIN = "external_langchain"
     # TODO is "external" the right name here? Since as of now, MCP is local / doesn't support remote?
     EXTERNAL_MCP = "external_mcp"
-
-
-class JobType(str, Enum):
-    JOB = "job"
-    RUN = "run"
-    BATCH = "batch"
-
-
-class ToolSourceType(str, Enum):
-    """Defines what a tool was derived from"""
-
-    python = "python"
-    json = "json"
-
-
-class ActorType(str, Enum):
-    LETTA_USER = "letta_user"
-    LETTA_AGENT = "letta_agent"
-    LETTA_SYSTEM = "letta_system"
-
-
-class MCPServerType(str, Enum):
-    SSE = "sse"
-    STDIO = "stdio"
-    STREAMABLE_HTTP = "streamable_http"
diff --git a/letta/orm/job.py b/letta/orm/job.py
index 6bb27a9f..5e2e14cc 100644
--- a/letta/orm/job.py
+++ b/letta/orm/job.py
@@ -4,10 +4,9 @@ from typing import TYPE_CHECKING, List, Optional
 from sqlalchemy import JSON, Index, String
 from sqlalchemy.orm import Mapped, mapped_column, relationship
 
-from letta.orm.enums import JobType
 from letta.orm.mixins import UserMixin
 from letta.orm.sqlalchemy_base import SqlalchemyBase
-from letta.schemas.enums import JobStatus
+from letta.schemas.enums import JobStatus, JobType
 from letta.schemas.job import Job as PydanticJob
 from letta.schemas.job import LettaRequestConfig
 
diff --git a/letta/orm/mcp_server.py b/letta/orm/mcp_server.py
index 578c54e6..dd16485b 100644
--- a/letta/orm/mcp_server.py
+++ b/letta/orm/mcp_server.py
@@ -7,9 +7,9 @@ from letta.functions.mcp_client.types import StdioServerConfig
 from letta.orm.custom_columns import MCPStdioServerConfigColumn
 
 # TODO everything in functions should live in this model
-from letta.orm.enums import MCPServerType
 from letta.orm.mixins import OrganizationMixin
 from letta.orm.sqlalchemy_base import SqlalchemyBase
+from letta.schemas.enums import MCPServerType
 from letta.schemas.mcp import MCPServer
 
 if TYPE_CHECKING:
diff --git a/letta/orm/tool.py b/letta/orm/tool.py
index 6dbce85c..3a70ca46 100644
--- a/letta/orm/tool.py
+++ b/letta/orm/tool.py
@@ -4,9 +4,10 @@ from sqlalchemy import JSON, Index, String, UniqueConstraint
 from sqlalchemy.orm import Mapped, mapped_column, relationship
 
 # TODO everything in functions should live in this model
-from letta.orm.enums import ToolSourceType, ToolType
+from letta.orm.enums import ToolType
 from letta.orm.mixins import OrganizationMixin
 from letta.orm.sqlalchemy_base import SqlalchemyBase
+from letta.schemas.enums import ToolSourceType
 from letta.schemas.tool import Tool as PydanticTool
 
 if TYPE_CHECKING:
diff --git a/letta/schemas/enums.py b/letta/schemas/enums.py
index c303d479..1794a37a 100644
--- a/letta/schemas/enums.py
+++ b/letta/schemas/enums.py
@@ -94,3 +94,43 @@ class FileProcessingStatus(str, Enum):
     EMBEDDING = "embedding"
     COMPLETED = "completed"
     ERROR = "error"
+
+
+class ToolType(str, Enum):
+    CUSTOM = "custom"
+    LETTA_CORE = "letta_core"
+    LETTA_MEMORY_CORE = "letta_memory_core"
+    LETTA_MULTI_AGENT_CORE = "letta_multi_agent_core"
+    LETTA_SLEEPTIME_CORE = "letta_sleeptime_core"
+    LETTA_VOICE_SLEEPTIME_CORE = "letta_voice_sleeptime_core"
+    LETTA_BUILTIN = "letta_builtin"
+    LETTA_FILES_CORE = "letta_files_core"
+    EXTERNAL_COMPOSIO = "external_composio"
+    EXTERNAL_LANGCHAIN = "external_langchain"
+    # TODO is "external" the right name here? Since as of now, MCP is local / doesn't support remote?
+    EXTERNAL_MCP = "external_mcp"
+
+
+class JobType(str, Enum):
+    JOB = "job"
+    RUN = "run"
+    BATCH = "batch"
+
+
+class ToolSourceType(str, Enum):
+    """Defines what a tool was derived from"""
+
+    python = "python"
+    json = "json"
+
+
+class ActorType(str, Enum):
+    LETTA_USER = "letta_user"
+    LETTA_AGENT = "letta_agent"
+    LETTA_SYSTEM = "letta_system"
+
+
+class MCPServerType(str, Enum):
+    SSE = "sse"
+    STDIO = "stdio"
+    STREAMABLE_HTTP = "streamable_http"
diff --git a/letta/schemas/job.py b/letta/schemas/job.py
index 4f2b09c4..fadde684 100644
--- a/letta/schemas/job.py
+++ b/letta/schemas/job.py
@@ -4,8 +4,7 @@ from typing import List, Optional
 from pydantic import BaseModel, Field
 
 from letta.constants import DEFAULT_MESSAGE_TOOL, DEFAULT_MESSAGE_TOOL_KWARG
-from letta.orm.enums import JobType
-from letta.schemas.enums import JobStatus
+from letta.schemas.enums import JobStatus, JobType
 from letta.schemas.letta_base import OrmMetadataBase
 from letta.schemas.letta_message import MessageType
 
diff --git a/letta/schemas/run.py b/letta/schemas/run.py
index acbcccb5..11e05839 100644
--- a/letta/schemas/run.py
+++ b/letta/schemas/run.py
@@ -2,7 +2,7 @@ from typing import Optional
 
 from pydantic import Field
 
-from letta.orm.enums import JobType
+from letta.schemas.enums import JobType
 from letta.schemas.job import Job, JobBase, LettaRequestConfig
 
 
diff --git a/letta/server/rest_api/routers/v1/runs.py b/letta/server/rest_api/routers/v1/runs.py
index 5974bc28..ae1c0f59 100644
--- a/letta/server/rest_api/routers/v1/runs.py
+++ b/letta/server/rest_api/routers/v1/runs.py
@@ -3,9 +3,8 @@ from typing import Annotated, List, Optional
 from fastapi import APIRouter, Depends, Header, HTTPException, Query
 from pydantic import Field
 
-from letta.orm.enums import JobType
 from letta.orm.errors import NoResultFound
-from letta.schemas.enums import JobStatus, MessageRole
+from letta.schemas.enums import JobStatus, JobType, MessageRole
 from letta.schemas.letta_message import LettaMessageUnion
 from letta.schemas.openai.chat_completion_response import UsageStatistics
 from letta.schemas.run import Run
diff --git a/letta/services/block_manager.py b/letta/services/block_manager.py
index 12156cd4..82015805 100644
--- a/letta/services/block_manager.py
+++ b/letta/services/block_manager.py
@@ -7,12 +7,12 @@ from sqlalchemy.orm import Session
 from letta.log import get_logger
 from letta.orm.block import Block as BlockModel
 from letta.orm.block_history import BlockHistory
-from letta.orm.enums import ActorType
 from letta.orm.errors import NoResultFound
 from letta.otel.tracing import trace_method
 from letta.schemas.agent import AgentState as PydanticAgentState
 from letta.schemas.block import Block as PydanticBlock
 from letta.schemas.block import BlockUpdate
+from letta.schemas.enums import ActorType
 from letta.schemas.user import User as PydanticUser
 from letta.server.db import db_registry
 from letta.utils import enforce_types
diff --git a/letta/services/job_manager.py b/letta/services/job_manager.py
index c7201fc5..52d9498f 100644
--- a/letta/services/job_manager.py
+++ b/letta/services/job_manager.py
@@ -7,7 +7,6 @@ from sqlalchemy.orm import Session
 
 from letta.helpers.datetime_helpers import get_utc_time
 from letta.log import get_logger
-from letta.orm.enums import JobType
 from letta.orm.errors import NoResultFound
 from letta.orm.job import Job as JobModel
 from letta.orm.job_messages import JobMessage
@@ -16,7 +15,7 @@ from letta.orm.sqlalchemy_base import AccessType
 from letta.orm.step import Step
 from letta.orm.step import Step as StepModel
 from letta.otel.tracing import trace_method
-from letta.schemas.enums import JobStatus, MessageRole
+from letta.schemas.enums import JobStatus, JobType, MessageRole
 from letta.schemas.job import BatchJob as PydanticBatchJob
 from letta.schemas.job import Job as PydanticJob
 from letta.schemas.job import JobUpdate, LettaRequestConfig
diff --git a/tests/integration_test_sleeptime_agent.py b/tests/integration_test_sleeptime_agent.py
index db0a50b9..4bb5c20e 100644
--- a/tests/integration_test_sleeptime_agent.py
+++ b/tests/integration_test_sleeptime_agent.py
@@ -7,11 +7,10 @@ from letta.config import LettaConfig
 from letta.constants import DEFAULT_HUMAN
 from letta.groups.sleeptime_multi_agent_v2 import SleeptimeMultiAgentV2
 from letta.orm import Provider, ProviderTrace, Step
-from letta.orm.enums import JobType
 from letta.orm.errors import NoResultFound
 from letta.schemas.agent import CreateAgent
 from letta.schemas.block import CreateBlock
-from letta.schemas.enums import JobStatus, ToolRuleType
+from letta.schemas.enums import JobStatus, JobType, ToolRuleType
 from letta.schemas.group import GroupUpdate, ManagerType, SleeptimeManagerUpdate
 from letta.schemas.message import MessageCreate
 from letta.schemas.run import Run
diff --git a/tests/test_managers.py b/tests/test_managers.py
index cb972432..d3375f8a 100644
--- a/tests/test_managers.py
+++ b/tests/test_managers.py
@@ -46,7 +46,7 @@ from letta.helpers.datetime_helpers import AsyncTimer
 from letta.jobs.types import ItemUpdateInfo, RequestStatusUpdateInfo, StepStatusUpdateInfo
 from letta.orm import Base, Block
 from letta.orm.block_history import BlockHistory
-from letta.orm.enums import ActorType, JobType, ToolType
+from letta.orm.enums import ToolType
 from letta.orm.errors import NoResultFound, UniqueConstraintViolationError
 from letta.orm.file import FileContent as FileContentModel
 from letta.orm.file import FileMetadata as FileMetadataModel
@@ -54,7 +54,7 @@ from letta.schemas.agent import AgentStepState, CreateAgent, UpdateAgent
 from letta.schemas.block import Block as PydanticBlock
 from letta.schemas.block import BlockUpdate, CreateBlock
 from letta.schemas.embedding_config import EmbeddingConfig
-from letta.schemas.enums import AgentStepStatus, FileProcessingStatus, JobStatus, MessageRole, ProviderType
+from letta.schemas.enums import ActorType, AgentStepStatus, FileProcessingStatus, JobStatus, JobType, MessageRole, ProviderType
 from letta.schemas.environment_variables import SandboxEnvironmentVariableCreate, SandboxEnvironmentVariableUpdate
 from letta.schemas.file import FileMetadata as PydanticFileMetadata
 from letta.schemas.identity import IdentityCreate, IdentityProperty, IdentityPropertyType, IdentityType, IdentityUpdate, IdentityUpsert