diff --git a/.devcontainer/Dockerfile b/.devcontainer/Dockerfile
index e91cce9..03bfacd 100644
--- a/.devcontainer/Dockerfile
+++ b/.devcontainer/Dockerfile
@@ -7,3 +7,7 @@ RUN chown node:node /home/node/.tmux.conf
 # Also wire up tmux configuration for root (used when connecting via `coder ssh`)
 COPY tmux.conf /root/.tmux.conf
 RUN chown root:root /root/.tmux.conf
+
+# Install the Namespace (nsc) CLI - https://namespace.so/docs/reference/cli/installation
+# Install system-wide so it is on PATH for both the `node` and `root` users.
+RUN curl -fsSL https://get.namespace.so/cloud/install.sh | NS_INSTALL_DIR=/usr/local/bin sh
diff --git a/README.md b/README.md
index 566ae91..aab63e3 100644
--- a/README.md
+++ b/README.md
@@ -18,6 +18,7 @@ My personal devcontainer for VSCode.
 - Anthropic Claude Code
 - opencode
 - `@openprose/prose-cli` (npm)
+- Namespace CLI (`nsc`)
 
 ## APT packages