diff --git a/shell.nix b/shell.nix
index 8f8623e2c041..4589fb514b9c 100644
--- a/shell.nix
+++ b/shell.nix
@@ -561,8 +561,20 @@ let
       set -e
       cd $(${pkgs.git}/bin/git rev-parse --show-toplevel)/utopia-remix
       ${pnpm}/bin/pnpm install
-      ${pnpm}/bin/pnpm exec prisma generate
-      PORT=8000 DATABASE_URL="postgres://$(whoami):postgres@localhost:5432/utopia" ${pnpm}/bin/pnpm run dev
+      ${pnpm}/bin/pnpm exec prisma generate > /dev/null
+      PNPM=${pnpm}/bin/pnpm PORT=8000 DATABASE_URL="postgres://$(whoami):postgres@localhost:5432/utopia" LOCAL=true ./run-remix.sh
+    '')
+    (pkgs.writeScriptBin "watch-fga" ''
+      #!/usr/bin/env bash
+      set -e
+      cd $(${pkgs.git}/bin/git rev-parse --show-toplevel)/utopia-remix
+      ./fga-run.sh
+    '')
+    (pkgs.writeScriptBin "fga-create-store" ''
+      #!/usr/bin/env bash
+      set -e
+      cd $(${pkgs.git}/bin/git rev-parse --show-toplevel)/utopia-remix
+      ./fga-create-store.sh
     '')
   ];
 
@@ -639,6 +651,8 @@ let
         send-keys -t :9 watch-vscode-build-extension-only C-m \; \
         new-window -n "PostgreSQL" \; \
         send-keys -t :10 start-postgres C-m \; \
+        new-window -n "FGA" \; \
+        send-keys -t :11 watch-fga C-m \; \
         select-window -t :1 \;
     '')
     (pkgs.writeScriptBin "start-full" ''
@@ -684,6 +698,8 @@ let
         send-keys -t :9 watch-vscode-build-extension-only C-m \; \
         new-window -n "PostgreSQL" \; \
         send-keys -t :10 start-postgres C-m \; \
+        new-window -n "FGA" \; \
+        send-keys -t :11 watch-fga C-m \; \
         select-window -t :1 \;
     '')
     (pkgs.writeScriptBin "start-full-webpack" ''
diff --git a/utopia-remix/docker-compose.fga.yml b/utopia-remix/docker-compose.fga.yml
new file mode 100644
index 000000000000..49741924c6ff
--- /dev/null
+++ b/utopia-remix/docker-compose.fga.yml
@@ -0,0 +1,81 @@
+services:
+  postgres:
+    image: postgres:14
+    container_name: postgres
+    command: postgres -c 'max_connections=100'
+    networks:
+      - default
+    ports:
+      - '54323:5432'
+    environment:
+      - POSTGRES_USER=postgres
+      - POSTGRES_PASSWORD=password
+    healthcheck:
+      test: ['CMD-SHELL', 'pg_isready -U postgres']
+      interval: 5s
+      timeout: 5s
+      retries: 5
+
+  migrate:
+    depends_on:
+      postgres:
+        condition: service_healthy
+    image: openfga/openfga:latest
+    container_name: migrate
+    environment:
+      - OPENFGA_DATASTORE_ENGINE=postgres
+      - OPENFGA_DATASTORE_URI=postgres://postgres:password@postgres:5432/postgres?sslmode=disable
+    command: migrate
+    networks:
+      - default
+
+  openfga:
+    depends_on:
+      migrate:
+        condition: service_completed_successfully
+    image: openfga/openfga:latest
+    container_name: openfga
+    command: run
+    environment:
+      - OPENFGA_DATASTORE_ENGINE=postgres
+      - OPENFGA_DATASTORE_URI=postgres://postgres:password@postgres:5432/postgres?sslmode=disable
+      - OPENFGA_DATASTORE_MAX_OPEN_CONNS=100 #see postgres container
+      - OPENFGA_PLAYGROUND_ENABLED=true
+    networks:
+      - default
+    ports:
+      - '8003:8080' #http
+      # - '8081:8081' #grpc
+      # - '3002:3000' #playground
+      # - "2112:2112" #prometheus metrics
+    healthcheck:
+      test: ['CMD', '/usr/local/bin/grpc_health_probe', '-addr=openfga:8081']
+      interval: 5s
+      timeout: 30s
+      retries: 3
+
+  # Two separate manual services for Docker and Podman because they behave differently :(
+  utopia-fga-model-docker:
+    profiles:
+      - manual
+    depends_on:
+      openfga:
+        condition: service_healthy
+    image: openfga/cli:latest
+    container_name: utopia-fga-model-docker
+    volumes:
+      - ./fga/model.fga:/model.fga
+    command: store create --name utopia-local --model /model.fga --api-url http://openfga:8080
+  utopia-fga-model-podman:
+    profiles:
+      - manual
+    image: alpine:3.19.1
+    container_name: utopia-fga-model-podman
+    volumes:
+      - ./fga/model.fga:/model.fga
+    command: >
+      sh -c "
+        wget -q https://github.com/openfga/cli/releases/download/v0.2.7/fga_0.2.7_linux_arm64.tar.gz
+        tar -xzf fga_0.2.7_linux_arm64.tar.gz
+        ./fga store create --name utopia-local --model /model.fga --api-url http://openfga:8080
+      "
diff --git a/utopia-remix/fga-create-store.sh b/utopia-remix/fga-create-store.sh
new file mode 100755
index 000000000000..6b6fa4a0f8b2
--- /dev/null
+++ b/utopia-remix/fga-create-store.sh
@@ -0,0 +1,45 @@
+#!/usr/bin/env bash
+
+# Create a new store based on the fga/model.fga file against the local FGA server,
+# then parse the generated Store ID and save it into the .env file.
+
+set -e
+
+HOST_ENV_KEY="FGA_API_HOST"
+STORE_ENV_KEY="FGA_STORE_ID"
+
+# Only run this if the .env file uses the local FGA store
+if ! grep -qE "^[^#]*\b${HOST_ENV_KEY}\b=['\"]?localhost" .env; then
+	echo "The FGA_API_HOST is either not defined or not set to localhost, so I won't do anything."
+	exit
+fi
+
+if type docker &> /dev/null; then
+	RUNTIME=docker
+elif type podman &> /dev/null; then
+	RUNTIME=podman
+else
+	echo "The docker or podman commands are not found."
+	exit
+fi
+
+SERVICE_NAME="utopia-fga-model-${RUNTIME}"
+
+echo "* Creating store…"
+${RUNTIME} compose -f docker-compose.fga.yml up ${SERVICE_NAME}
+
+# Note: it would be awesome to just use jq here, but there's no guarantee it
+# will be available on the host machine, so this is just doing a simple regex
+# match since the JSON output of the FGA CLI is simple enough.
+echo "* Parsing logs…"
+STORE_ID=$( ${RUNTIME} logs -f ${SERVICE_NAME} | tail -n1 | grep -o '"id":"[^"]*"' | awk -F':' '{print $2}' | tr -d '"' )
+
+echo "=> Obtained store id ${STORE_ID}"
+
+STORE_ENV_LINE="${STORE_ENV_KEY}=\"${STORE_ID}\" # ** GENERATED BY fga-create-store.sh **"
+
+grep -vE "\b${STORE_ENV_KEY}\b=" .env > .env.temp
+mv .env.temp .env
+echo "${STORE_ENV_LINE}" >> .env
+
+echo "=> Updated .env file"
diff --git a/utopia-remix/fga-run.sh b/utopia-remix/fga-run.sh
new file mode 100755
index 000000000000..29fda8cbdb4f
--- /dev/null
+++ b/utopia-remix/fga-run.sh
@@ -0,0 +1,26 @@
+#!/usr/bin/env bash
+
+# Start the FGA local server with either Docker or Podman.
+
+set -e
+
+HOST_ENV_KEY="FGA_API_HOST"
+STORE_ENV_KEY="FGA_STORE_ID"
+
+# Only run this if the .env file uses the local FGA store
+if ! grep -qE "^[^#]*\b${HOST_ENV_KEY}\b=['\"]?localhost" .env; then
+	echo "The FGA_API_HOST is either not defined or not set to localhost, so I won't do anything."
+	echo "If you want to enable the local FGA server, please add FGA_API_HOST=localhost:8003 to your environment variables."
+	exit
+fi
+
+if type docker &> /dev/null; then
+	RUNTIME=docker
+elif type podman &> /dev/null; then
+	RUNTIME=podman
+else
+	echo "The docker or podman commands are not found."
+	exit
+fi
+
+${RUNTIME} compose -f docker-compose.fga.yml up
diff --git a/utopia-remix/fga/model.fga b/utopia-remix/fga/model.fga
new file mode 100644
index 000000000000..43085ffc5e1b
--- /dev/null
+++ b/utopia-remix/fga/model.fga
@@ -0,0 +1,26 @@
+model
+  schema 1.1
+
+type user
+
+type project
+  relations
+    define can_change_owner: owner
+    define can_comment: collaborator or editor or owner
+    define can_edit: editor or owner
+    define can_fork: viewer or collaborator or editor or owner
+    define can_manage: owner
+    define can_play: viewer or collaborator or editor or owner
+    define can_request_access: [user:*]
+    define can_see_live_changes: collaborator or editor or owner
+    define can_show_presence: collaborator or editor or owner
+    define can_view: viewer or collaborator or editor or owner
+    define collaborator: [user, user:*, group#member]
+    define creator: [user]
+    define editor: [user, group#member]
+    define owner: [user] or creator
+    define viewer: [user, user:*, group#member]
+
+type group
+  relations
+    define member: [user]
diff --git a/utopia-remix/run-remix.sh b/utopia-remix/run-remix.sh
new file mode 100755
index 000000000000..f1498e1fda3f
--- /dev/null
+++ b/utopia-remix/run-remix.sh
@@ -0,0 +1,23 @@
+#!/usr/bin/env bash
+
+## Please run this script from shell.nix with `watch-remix` or provide the
+## PNPM= environment variable with the pnpm executable path.
+
+set -e
+
+if [ "${LOCAL}" == 'true' ] ; then
+	# Make sure the .env file exists
+	touch .env
+
+	HOST_ENV_KEY="FGA_API_HOST"
+	STORE_ENV_KEY="FGA_STORE_ID"
+
+	if grep -qE "^[^#]*\b${HOST_ENV_KEY}\b=['\"]?localhost" .env; then
+		if ! grep -qE "^[^#]*\b${STORE_ENV_KEY}\b=['\"]?.+" .env; then
+			echo "* FGA is set to run locally, but no FGA_STORE_ID is set. Creating it…"
+			./fga-create-store.sh
+		fi
+	fi
+fi
+
+${PNPM} run dev