diff --git a/Dockerfile b/Dockerfile
index a35bd05..f87212c 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -23,8 +23,8 @@ RUN --mount=type=cache,target=/go/pkg/mod \
     go build -p "$(nproc)" -trimpath -ldflags="-s -w" -o /out/api ./cmd/api
 
 FROM base AS dev
-ENV ADDR=:8080
-EXPOSE 8080
+ENV ADDR=:8122
+EXPOSE 8122
 CMD ["go", "run", "./cmd/api"]
 
 FROM gcr.io/distroless/static-debian12:nonroot AS runtime
@@ -32,7 +32,7 @@ FROM gcr.io/distroless/static-debian12:nonroot AS runtime
 WORKDIR /app
 COPY --from=builder /out/api /app/api
 
-ENV ADDR=:8080
-EXPOSE 8080
+ENV ADDR=:8122
+EXPOSE 8122
 
 ENTRYPOINT ["/app/api"]
diff --git a/README.md b/README.md
index fe0fb3d..48cb4a9 100644
--- a/README.md
+++ b/README.md
@@ -22,11 +22,11 @@ go run ./cmd/api
 
 Primary deployed base URL: `https://momswap.produktor.duckdns.org/`.
 
-Local default (for development): `http://localhost:8080`.
+Local default (for development): `http://localhost:8122`.
 
 Optional environment variables:
 
-- `ADDR` (default `:8080`)
+- `ADDR` (default `:8122`)
 - `ADMIN_PUBLIC_KEY` (bootstrap initial inviter/admin user)
 
 ## Docker Compose
@@ -40,7 +40,7 @@ COMPOSE_BAKE=true docker compose up --build -d
 This starts:
 
 - `db` (`postgis/postgis`) on `5432`
-- `api` on `8080`, wired with `DATABASE_URL` to the `db` service
+- `api` on `8122`, wired with `DATABASE_URL` to the `db` service
 
 Stop the service:
 
@@ -74,7 +74,7 @@ go run ./cmd/api
 Then visit:
 
 - Production: `https://momswap.produktor.duckdns.org/web/`
-- Local: `http://localhost:8080/web/`
+- Local: `http://localhost:8122/web/`
 
 ## API client library
 
diff --git a/cmd/api/main.go b/cmd/api/main.go
index d345073..88af1b2 100644
--- a/cmd/api/main.go
+++ b/cmd/api/main.go
@@ -12,7 +12,7 @@ import (
 )
 
 func main() {
-	addr := getEnv("ADDR", ":8080")
+	addr := getEnv("ADDR", ":8122")
 	adminPublicKey := os.Getenv("ADMIN_PUBLIC_KEY")
 
 	memory := store.NewMemoryStore()
diff --git a/docker-compose.yml b/docker-compose.yml
index cd98195..2b65ce8 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -6,8 +6,6 @@ services:
       POSTGRES_DB: "${POSTGRES_DB:-momswap}"
       POSTGRES_USER: "${POSTGRES_USER:-momswap}"
       POSTGRES_PASSWORD: "${POSTGRES_PASSWORD:-momswap}"
-    ports:
-      - "5432:5432"
     volumes:
       - ./var/posrgres:/var/lib/postgresql/data
     healthcheck:
@@ -30,14 +28,14 @@ services:
     image: momswap-backend:latest
     container_name: momswap-backend-api
     environment:
-      ADDR: ":8080"
+      ADDR: ":8122"
       ADMIN_PUBLIC_KEY: "${ADMIN_PUBLIC_KEY:-}"
       DATABASE_URL: "postgres://${POSTGRES_USER:-momswap}:${POSTGRES_PASSWORD:-momswap}@db:5432/${POSTGRES_DB:-momswap}?sslmode=disable"
     depends_on:
       db:
         condition: service_healthy
     ports:
-      - "8080:8080"
+      - "8122:8122"
     restart: unless-stopped
 
   api-dev:
@@ -53,14 +51,14 @@ services:
     image: momswap-backend:dev
     container_name: momswap-backend-api-dev
     environment:
-      ADDR: ":8080"
+      ADDR: ":8122"
       ADMIN_PUBLIC_KEY: "${ADMIN_PUBLIC_KEY:-}"
       DATABASE_URL: "postgres://${POSTGRES_USER:-momswap}:${POSTGRES_PASSWORD:-momswap}@db:5432/${POSTGRES_DB:-momswap}?sslmode=disable"
     depends_on:
       db:
         condition: service_healthy
     ports:
-      - "8080:8080"
+      - "8122:8122"
     restart: unless-stopped
     develop:
       watch:
diff --git a/docs/typescript-frontend-integration.md b/docs/typescript-frontend-integration.md
index 8fe704a..82b1f39 100644
--- a/docs/typescript-frontend-integration.md
+++ b/docs/typescript-frontend-integration.md
@@ -102,4 +102,4 @@ For no-bundler apps, import the built ESM file:
 
 The backend itself serves static UI at `/web/`, but this library can be consumed by any frontend runtime that supports `fetch`, `TextEncoder`, and ES modules.
 
-For local development you can switch the client base URL to `http://localhost:8080`.
+For local development you can switch the client base URL to `http://localhost:8122`.
diff --git a/web/app.js b/web/app.js
index 0c9008a..03062a5 100644
--- a/web/app.js
+++ b/web/app.js
@@ -4,7 +4,7 @@ const { createApp, ref, reactive, onMounted } = Vue;
 
 createApp({
   setup() {
-    const apiBase = ref(localStorage.getItem("geo_api_base") || "http://localhost:8080");
+    const apiBase = ref(localStorage.getItem("geo_api_base") || "http://localhost:8122");
     const state = reactive({
       publicKey: "",
       privateKey: "",