diff --git a/README.md b/README.md
index d8de5ca..e1c7cec 100644
--- a/README.md
+++ b/README.md
@@ -138,6 +138,8 @@ Run from a bootstrapped repo:
 ```bash
 ~/.mosaic/bin/mosaic-orchestrator-run --once
 ~/.mosaic/bin/mosaic-orchestrator-run --poll-sec 10
+~/.mosaic/bin/mosaic-orchestrator-matrix-publish
+~/.mosaic/bin/mosaic-orchestrator-matrix-consume
 ```
 
 The controller reads/writes repo-local state in `.mosaic/orchestrator/` and emits
diff --git a/bin/mosaic-bootstrap-repo b/bin/mosaic-bootstrap-repo
index 1a4210d..82ff1c7 100755
--- a/bin/mosaic-bootstrap-repo
+++ b/bin/mosaic-bootstrap-repo
@@ -58,6 +58,7 @@ copy_file "$TEMPLATE_ROOT/.mosaic/quality-rails.yml" "$TARGET_DIR/.mosaic/qualit
 copy_file "$TEMPLATE_ROOT/.mosaic/orchestrator/config.json" "$TARGET_DIR/.mosaic/orchestrator/config.json"
 copy_file "$TEMPLATE_ROOT/.mosaic/orchestrator/tasks.json" "$TARGET_DIR/.mosaic/orchestrator/tasks.json"
 copy_file "$TEMPLATE_ROOT/.mosaic/orchestrator/state.json" "$TARGET_DIR/.mosaic/orchestrator/state.json"
+copy_file "$TEMPLATE_ROOT/.mosaic/orchestrator/matrix_state.json" "$TARGET_DIR/.mosaic/orchestrator/matrix_state.json"
 copy_file "$TEMPLATE_ROOT/.mosaic/orchestrator/logs/.gitkeep" "$TARGET_DIR/.mosaic/orchestrator/logs/.gitkeep"
 copy_file "$TEMPLATE_ROOT/.mosaic/orchestrator/results/.gitkeep" "$TARGET_DIR/.mosaic/orchestrator/results/.gitkeep"
 
diff --git a/bin/mosaic-doctor b/bin/mosaic-doctor
index ffab18a..e640f6f 100755
--- a/bin/mosaic-doctor
+++ b/bin/mosaic-doctor
@@ -126,6 +126,9 @@ expect_file "$MOSAIC_HOME/bin/mosaic-sync-skills"
 expect_file "$MOSAIC_HOME/bin/mosaic-quality-apply"
 expect_file "$MOSAIC_HOME/bin/mosaic-quality-verify"
 expect_file "$MOSAIC_HOME/bin/mosaic-orchestrator-run"
+expect_file "$MOSAIC_HOME/bin/mosaic-orchestrator-matrix-publish"
+expect_file "$MOSAIC_HOME/bin/mosaic-orchestrator-matrix-consume"
+expect_file "$MOSAIC_HOME/rails/orchestrator-matrix/transport/matrix_transport.py"
 
 # Claude runtime file checks (copied, non-symlink).
 for rf in CLAUDE.md settings.json hooks-config.json context7-integration.md; do
diff --git a/bin/mosaic-orchestrator-matrix-consume b/bin/mosaic-orchestrator-matrix-consume
new file mode 100755
index 0000000..21fd8d3
--- /dev/null
+++ b/bin/mosaic-orchestrator-matrix-consume
@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+MOSAIC_HOME="${MOSAIC_HOME:-$HOME/.mosaic}"
+BRIDGE="$MOSAIC_HOME/rails/orchestrator-matrix/transport/matrix_transport.py"
+
+if [[ ! -f "$BRIDGE" ]]; then
+  echo "[mosaic-orch-matrix] missing transport bridge: $BRIDGE" >&2
+  exit 1
+fi
+
+exec python3 "$BRIDGE" --repo "$(pwd)" --mode consume "$@"
diff --git a/bin/mosaic-orchestrator-matrix-publish b/bin/mosaic-orchestrator-matrix-publish
new file mode 100755
index 0000000..f438480
--- /dev/null
+++ b/bin/mosaic-orchestrator-matrix-publish
@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+MOSAIC_HOME="${MOSAIC_HOME:-$HOME/.mosaic}"
+BRIDGE="$MOSAIC_HOME/rails/orchestrator-matrix/transport/matrix_transport.py"
+
+if [[ ! -f "$BRIDGE" ]]; then
+  echo "[mosaic-orch-matrix] missing transport bridge: $BRIDGE" >&2
+  exit 1
+fi
+
+exec python3 "$BRIDGE" --repo "$(pwd)" --mode publish "$@"
diff --git a/rails/orchestrator-matrix/README.md b/rails/orchestrator-matrix/README.md
index 1e9e4d6..9f594a2 100644
--- a/rails/orchestrator-matrix/README.md
+++ b/rails/orchestrator-matrix/README.md
@@ -44,7 +44,26 @@ Continuous loop:
 ~/.mosaic/bin/mosaic-orchestrator-run --poll-sec 10
 ```
 
+Publish new orchestrator events to Matrix:
+
+```bash
+~/.mosaic/bin/mosaic-orchestrator-matrix-publish
+```
+
+Consume Matrix task messages into `tasks.json`:
+
+```bash
+~/.mosaic/bin/mosaic-orchestrator-matrix-consume
+```
+
 ## Matrix Note
 
 This rail writes canonical events to `.mosaic/orchestrator/events.ndjson`.
-Matrix bridge services can consume and relay these events to Matrix rooms.
+The Matrix transport bridge publishes those events into the configured control room
+and can consume task commands from that room.
+
+Task injection message format (room text):
+
+```text
+!mosaic-task {"id":"TASK-123","title":"Fix bug","command":"echo run","quality_gates":["pnpm lint"]}
+```
diff --git a/rails/orchestrator-matrix/transport/.gitignore b/rails/orchestrator-matrix/transport/.gitignore
new file mode 100644
index 0000000..7a60b85
--- /dev/null
+++ b/rails/orchestrator-matrix/transport/.gitignore
@@ -0,0 +1,2 @@
+__pycache__/
+*.pyc
diff --git a/rails/orchestrator-matrix/transport/matrix_transport.py b/rails/orchestrator-matrix/transport/matrix_transport.py
new file mode 100755
index 0000000..2c6d8b4
--- /dev/null
+++ b/rails/orchestrator-matrix/transport/matrix_transport.py
@@ -0,0 +1,200 @@
+#!/usr/bin/env python3
+"""Matrix transport bridge for Mosaic orchestrator events/tasks."""
+
+from __future__ import annotations
+
+import argparse
+import json
+import pathlib
+import urllib.parse
+import urllib.request
+import uuid
+from typing import Any
+
+
+def load_json(path: pathlib.Path, default: Any) -> Any:
+    if not path.exists():
+        return default
+    with path.open("r", encoding="utf-8") as f:
+        return json.load(f)
+
+
+def save_json(path: pathlib.Path, data: Any) -> None:
+    path.parent.mkdir(parents=True, exist_ok=True)
+    tmp = path.with_suffix(path.suffix + ".tmp")
+    with tmp.open("w", encoding="utf-8") as f:
+        json.dump(data, f, indent=2)
+        f.write("\n")
+    tmp.replace(path)
+
+
+def matrix_request(
+    homeserver: str,
+    access_token: str,
+    method: str,
+    path: str,
+    payload: dict[str, Any] | None = None,
+) -> dict[str, Any]:
+    url = homeserver.rstrip("/") + path
+    body = None
+    headers = {"Authorization": f"Bearer {access_token}"}
+    if payload is not None:
+        body = json.dumps(payload, ensure_ascii=True).encode("utf-8")
+        headers["Content-Type"] = "application/json"
+    req = urllib.request.Request(url, method=method, data=body, headers=headers)
+    with urllib.request.urlopen(req, timeout=30) as resp:
+        raw = resp.read().decode("utf-8")
+        return json.loads(raw) if raw else {}
+
+
+def matrix_send_message(homeserver: str, access_token: str, room_id: str, message: str) -> None:
+    txn = str(uuid.uuid4())
+    path = f"/_matrix/client/v3/rooms/{urllib.parse.quote(room_id, safe='')}/send/m.room.message/{txn}"
+    matrix_request(
+        homeserver,
+        access_token,
+        "PUT",
+        path,
+        {"msgtype": "m.text", "body": message},
+    )
+
+
+def format_event_message(event: dict[str, Any]) -> str:
+    et = event.get("event_type", "unknown")
+    tid = event.get("task_id", "unknown")
+    status = event.get("status", "unknown")
+    msg = event.get("message", "")
+    return f"[mosaic-orch] {et} task={tid} status={status} :: {msg}"
+
+
+def publish_events(repo: pathlib.Path, config: dict[str, Any]) -> int:
+    orch = repo / ".mosaic" / "orchestrator"
+    events_path = orch / "events.ndjson"
+    bridge_state_path = orch / "matrix_state.json"
+    state = load_json(bridge_state_path, {"last_published_line": 0, "since": None})
+
+    homeserver = str(config.get("matrix", {}).get("homeserver_url", "")).strip()
+    token = str(config.get("matrix", {}).get("access_token", "")).strip()
+    room_id = str(config.get("matrix", {}).get("control_room_id", "")).strip()
+    if not homeserver or not token or not room_id:
+      raise ValueError("matrix homeserver_url, access_token, and control_room_id are required")
+
+    if not events_path.exists():
+        return 0
+
+    lines = events_path.read_text(encoding="utf-8").splitlines()
+    start = int(state.get("last_published_line", 0))
+    published = 0
+    for idx, line in enumerate(lines[start:], start=start + 1):
+        if not line.strip():
+            continue
+        event = json.loads(line)
+        matrix_send_message(homeserver, token, room_id, format_event_message(event))
+        state["last_published_line"] = idx
+        published += 1
+    save_json(bridge_state_path, state)
+    return published
+
+
+def parse_task_command(body: str) -> dict[str, Any] | None:
+    raw = body.strip()
+    if raw.startswith("!mosaic-task "):
+        payload = raw[len("!mosaic-task ") :].strip()
+    elif raw.startswith("@mosaic task "):
+        payload = raw[len("@mosaic task ") :].strip()
+    else:
+        return None
+
+    task = json.loads(payload)
+    if not isinstance(task, dict):
+        raise ValueError("task payload must be a JSON object")
+    if "id" not in task or "title" not in task:
+        raise ValueError("task payload requires id and title")
+    task.setdefault("status", "pending")
+    return task
+
+
+def consume_tasks(repo: pathlib.Path, config: dict[str, Any]) -> int:
+    orch = repo / ".mosaic" / "orchestrator"
+    tasks_path = orch / "tasks.json"
+    bridge_state_path = orch / "matrix_state.json"
+    state = load_json(bridge_state_path, {"last_published_line": 0, "since": None})
+    tasks = load_json(tasks_path, {"tasks": []})
+    task_items = tasks.get("tasks", [])
+    if not isinstance(task_items, list):
+        raise ValueError("tasks.json must contain {'tasks': [...]} structure")
+
+    homeserver = str(config.get("matrix", {}).get("homeserver_url", "")).strip()
+    token = str(config.get("matrix", {}).get("access_token", "")).strip()
+    room_id = str(config.get("matrix", {}).get("control_room_id", "")).strip()
+    bot_user_id = str(config.get("matrix", {}).get("bot_user_id", "")).strip()
+    if not homeserver or not token or not room_id:
+        raise ValueError("matrix homeserver_url, access_token, and control_room_id are required")
+
+    since = state.get("since")
+    path = "/_matrix/client/v3/sync?timeout=1"
+    if since:
+        path += "&since=" + urllib.parse.quote(str(since), safe="")
+    sync = matrix_request(homeserver, token, "GET", path)
+    if "next_batch" in sync:
+        state["since"] = sync["next_batch"]
+
+    room_timeline = (
+        sync.get("rooms", {})
+        .get("join", {})
+        .get(room_id, {})
+        .get("timeline", {})
+        .get("events", [])
+    )
+    added = 0
+    existing = {str(t.get("id")) for t in task_items if isinstance(t, dict)}
+    for evt in room_timeline:
+        if evt.get("type") != "m.room.message":
+            continue
+        sender = str(evt.get("sender", ""))
+        if bot_user_id and sender == bot_user_id:
+            continue
+        body = str(evt.get("content", {}).get("body", ""))
+        task = parse_task_command(body)
+        if not task:
+            continue
+        task_id = str(task.get("id"))
+        if task_id in existing:
+            continue
+        task_items.append(task)
+        existing.add(task_id)
+        added += 1
+
+    save_json(tasks_path, {"tasks": task_items})
+    save_json(bridge_state_path, state)
+    return added
+
+
+def main() -> int:
+    p = argparse.ArgumentParser(description="Mosaic Matrix transport bridge")
+    p.add_argument("--repo", default=".", help="Repository root")
+    p.add_argument("--mode", required=True, choices=["publish", "consume"], help="Bridge mode")
+    args = p.parse_args()
+
+    repo = pathlib.Path(args.repo).resolve()
+    config = load_json(repo / ".mosaic" / "orchestrator" / "config.json", {})
+    if not config.get("enabled", False):
+        print("[mosaic-orch-matrix] disabled in config (enabled=false)")
+        return 0
+
+    if str(config.get("transport", "")).strip() != "matrix":
+        print("[mosaic-orch-matrix] config transport != matrix; nothing to do")
+        return 0
+
+    if args.mode == "publish":
+        count = publish_events(repo, config)
+        print(f"[mosaic-orch-matrix] published_events={count}")
+        return 0
+
+    count = consume_tasks(repo, config)
+    print(f"[mosaic-orch-matrix] consumed_tasks={count}")
+    return 0
+
+
+if __name__ == "__main__":
+    raise SystemExit(main())
diff --git a/templates/repo/.mosaic/README.md b/templates/repo/.mosaic/README.md
index f61cf37..49f48d6 100644
--- a/templates/repo/.mosaic/README.md
+++ b/templates/repo/.mosaic/README.md
@@ -45,3 +45,10 @@ Run continuously:
 ```bash
 ~/.mosaic/bin/mosaic-orchestrator-run --poll-sec 10
 ```
+
+Bridge events to Matrix:
+
+```bash
+~/.mosaic/bin/mosaic-orchestrator-matrix-publish
+~/.mosaic/bin/mosaic-orchestrator-matrix-consume
+```
diff --git a/templates/repo/.mosaic/orchestrator/config.json b/templates/repo/.mosaic/orchestrator/config.json
index 8ede0fb..3cf84b0 100644
--- a/templates/repo/.mosaic/orchestrator/config.json
+++ b/templates/repo/.mosaic/orchestrator/config.json
@@ -4,7 +4,9 @@
   "matrix": {
     "control_room_id": "",
     "workspace_id": "",
-    "homeserver_url": ""
+    "homeserver_url": "",
+    "access_token": "",
+    "bot_user_id": ""
   },
   "worker": {
     "runtime": "codex",
diff --git a/templates/repo/.mosaic/orchestrator/matrix_state.json b/templates/repo/.mosaic/orchestrator/matrix_state.json
new file mode 100644
index 0000000..4ca7856
--- /dev/null
+++ b/templates/repo/.mosaic/orchestrator/matrix_state.json
@@ -0,0 +1,4 @@
+{
+  "last_published_line": 0,
+  "since": null
+}