diff --git a/.gitignore b/.gitignore
index 4045db012e..d526ac0f87 100644
--- a/.gitignore
+++ b/.gitignore
@@ -65,7 +65,7 @@ yolo11n.pt
 
 *mobileclip*
 /results
-**/cpp/result
+**/result
 
 CLAUDE.MD
 /assets/teleop_certs/
diff --git a/dimos/hardware/sensors/camera/webcam.py b/dimos/hardware/sensors/camera/webcam.py
index cfd1a080a0..61717b699e 100644
--- a/dimos/hardware/sensors/camera/webcam.py
+++ b/dimos/hardware/sensors/camera/webcam.py
@@ -12,13 +12,13 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-from dataclasses import dataclass, field
 from functools import cache
 import threading
 import time
 from typing import Literal
 
 import cv2
+from pydantic import Field
 from reactivex import create
 from reactivex.observable import Observable
 
@@ -28,13 +28,12 @@
 from dimos.utils.reactive import backpressure
 
 
-@dataclass
 class WebcamConfig(CameraConfig):
     camera_index: int = 0  # /dev/videoN
     width: int = 640
     height: int = 480
     fps: float = 15.0
-    camera_info: CameraInfo = field(default_factory=CameraInfo)
+    camera_info: CameraInfo = Field(default_factory=CameraInfo)
     frame_id_prefix: str | None = None
     stereo_slice: Literal["left", "right"] | None = None  # For stereo cameras
 
@@ -167,6 +166,10 @@ def _capture_loop(self) -> None:
 
     @property
     def camera_info(self) -> CameraInfo:
-        return self.config.camera_info
+        info = self.config.camera_info
+        if info.width == 0 or info.height == 0:
+            info.width = self.config.width
+            info.height = self.config.height
+        return info
 
     def emit(self, image: Image) -> None: ...
diff --git a/dimos/perception/slam/orbslam3/README.md b/dimos/perception/slam/orbslam3/README.md
new file mode 100644
index 0000000000..a38fe700e8
--- /dev/null
+++ b/dimos/perception/slam/orbslam3/README.md
@@ -0,0 +1,9 @@
+# ORB-SLAM3 Native Module
+
+Visual SLAM module wrapping [ORB-SLAM3](https://github.com/UZ-SLAMLab/ORB_SLAM3) as a native subprocess.
+
+The C++ binary lives in a separate GPL-3.0 repo ([dimos-orb-slam3](https://github.com/dimensionalOS/dimos-orb-slam3)) and is pulled in at build time via Nix.
+
+## Known Issues
+
+- **Transform / trajectory reconstruction mismatch**: The reconstructed trajectory does not match ground-truth poses. There is a suspected coordinate-frame or transform-composition issue causing output to diverge from base truth. Needs investigation.
diff --git a/dimos/perception/slam/orbslam3/blueprints/webcam.py b/dimos/perception/slam/orbslam3/blueprints/webcam.py
new file mode 100644
index 0000000000..d620780b02
--- /dev/null
+++ b/dimos/perception/slam/orbslam3/blueprints/webcam.py
@@ -0,0 +1,26 @@
+# Copyright 2026 Dimensional Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+from dimos.core.blueprints import autoconnect
+from dimos.hardware.sensors.camera.module import CameraModule
+from dimos.perception.slam.orbslam3.module import OrbSlam3
+from dimos.visualization.rerun.bridge import _resolve_viewer_mode, rerun_bridge
+
+orbslam3_webcam = autoconnect(
+    rerun_bridge(viewer_mode=_resolve_viewer_mode()),
+    CameraModule.blueprint(),
+    OrbSlam3.blueprint(sensor_mode="MONOCULAR"),
+).global_config(n_workers=3)
+
+__all__ = ["orbslam3_webcam"]
diff --git a/dimos/perception/slam/orbslam3/module.py b/dimos/perception/slam/orbslam3/module.py
new file mode 100644
index 0000000000..3a2064bbbe
--- /dev/null
+++ b/dimos/perception/slam/orbslam3/module.py
@@ -0,0 +1,118 @@
+# Copyright 2026 Dimensional Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+"""Python NativeModule wrapper for ORB-SLAM3 visual SLAM.
+
+Wraps ORB-SLAM3 as a native subprocess that receives camera images and
+outputs camera pose estimates (odometry).
+
+Usage::
+
+    from dimos.perception.slam.orbslam3.module import OrbSlam3
+    from dimos.core.blueprints import autoconnect
+
+    autoconnect(
+        OrbSlam3.blueprint(sensor_mode=SensorMode.MONOCULAR),
+        SomeConsumer.blueprint(),
+    ).build().loop()
+"""
+
+from __future__ import annotations
+
+import enum
+from pathlib import Path
+from typing import TYPE_CHECKING
+
+from dimos.core.native_module import NativeModule, NativeModuleConfig
+from dimos.core.stream import In, Out
+from dimos.msgs.nav_msgs.Odometry import Odometry
+from dimos.msgs.nav_msgs.Path import Path as NavPath
+from dimos.msgs.sensor_msgs.Image import Image
+from dimos.msgs.sensor_msgs.PointCloud2 import PointCloud2
+from dimos.spec import perception
+
+_MODULE_DIR = Path(__file__).parent
+
+
+class SensorMode(enum.StrEnum):
+    MONOCULAR = "MONOCULAR"
+    STEREO = "STEREO"
+    RGBD = "RGBD"
+    IMU_MONOCULAR = "IMU_MONOCULAR"
+    IMU_STEREO = "IMU_STEREO"
+    IMU_RGBD = "IMU_RGBD"
+
+
+class OrbSlam3Config(NativeModuleConfig):
+    """Config for the ORB-SLAM3 visual SLAM native module."""
+
+    cwd: str | None = str(_MODULE_DIR)
+    executable: str = "result/bin/orbslam3_native"
+    build_command: str | None = (
+        "nix build github:dimensionalOS/dimos-orb-slam3/v0.2.0 --no-write-lock-file"
+    )
+
+    # ORB-SLAM3 sensor mode
+    sensor_mode: SensorMode = SensorMode.MONOCULAR
+
+    # Pangolin viewer (disable for headless)
+    use_viewer: bool = False
+
+    # Frame IDs for output messages
+    frame_id: str = "world"
+    child_frame_id: str = "camera_link"
+
+    # Camera settings YAML (absolute path, or override with your own calibration)
+    settings_path: str = str(
+        _MODULE_DIR / "result" / "share" / "orbslam3" / "config" / "RealSense_D435i.yaml"
+    )
+
+    # Vocabulary path (None = use compiled-in default from nix build)
+    vocab_path: str | None = None
+
+    # How often to publish map points and keyframe path (every N frames)
+    map_publish_interval: int = 10
+
+
+class OrbSlam3(NativeModule[OrbSlam3Config], perception.Odometry):
+    """ORB-SLAM3 visual SLAM module.
+
+    Ports:
+        color_image (In[Image]): Camera frames to track.
+        odometry (Out[Odometry]): Camera pose as nav_msgs.Odometry.
+        keypoints_image (Out[Image]): Color image with tracked keypoints overlay.
+        map_points (Out[PointCloud2]): Sparse 3D map points.
+        keyframe_path (Out[NavPath]): Keyframe pose graph as a path.
+    """
+
+    default_config = OrbSlam3Config
+    color_image: In[Image]
+    odometry: Out[Odometry]
+    keypoints_image: Out[Image]
+    map_points: Out[PointCloud2]
+    keyframe_path: Out[NavPath]
+
+
+orbslam3_module = OrbSlam3.blueprint
+
+__all__ = [
+    "OrbSlam3",
+    "OrbSlam3Config",
+    "SensorMode",
+    "orbslam3_module",
+]
+
+# Verify protocol port compliance (mypy will flag missing ports)
+if TYPE_CHECKING:
+    OrbSlam3()
diff --git a/dimos/robot/all_blueprints.py b/dimos/robot/all_blueprints.py
index 5910093d61..93af60aa27 100644
--- a/dimos/robot/all_blueprints.py
+++ b/dimos/robot/all_blueprints.py
@@ -56,6 +56,7 @@
     "mid360-fastlio": "dimos.hardware.sensors.lidar.fastlio2.fastlio_blueprints:mid360_fastlio",
     "mid360-fastlio-voxels": "dimos.hardware.sensors.lidar.fastlio2.fastlio_blueprints:mid360_fastlio_voxels",
     "mid360-fastlio-voxels-native": "dimos.hardware.sensors.lidar.fastlio2.fastlio_blueprints:mid360_fastlio_voxels_native",
+    "orbslam3-webcam": "dimos.perception.slam.orbslam3.blueprints.webcam:orbslam3_webcam",
     "teleop-phone": "dimos.teleop.phone.blueprints:teleop_phone",
     "teleop-phone-go2": "dimos.teleop.phone.blueprints:teleop_phone_go2",
     "teleop-phone-go2-fleet": "dimos.teleop.phone.blueprints:teleop_phone_go2_fleet",
@@ -144,6 +145,7 @@
     "object-tracker2-d": "dimos.perception.object_tracker_2d",
     "object-tracker3-d": "dimos.perception.object_tracker_3d",
     "object-tracking": "dimos.perception.object_tracker",
+    "orbslam3-module": "dimos.perception.slam.orbslam3.module",
     "osm-skill": "dimos.agents.skills.osm",
     "patrolling-module": "dimos.navigation.patrolling.module",
     "perceive-loop-skill": "dimos.perception.perceive_loop_skill",