diff --git a/README.md b/README.md
index 24ed1fb..ce1f0b9 100644
--- a/README.md
+++ b/README.md
@@ -24,7 +24,7 @@ pkg/tools/reasoning/ — reasoning.Server: reasoning_think, reasoning_plan
 mk
 ```
 
-Installs sandbox config to `~/.config/ollie/sandbox/`.
+No build step — ollie-core is a library.
 
 ## Configuration
 
diff --git a/mkfile b/mkfile
index 4ccdf40..1b6431e 100644
--- a/mkfile
+++ b/mkfile
@@ -1,6 +1,2 @@
-all:V: install
-
-install:V:
-	mkdir -p $HOME/.config/ollie/sandbox
-	cp -rf sandbox $HOME/.config/ollie
-
+all:V:
+	@echo 'ollie-core: no build step (library only)'
diff --git a/sandbox/anvilmcp.yaml b/sandbox/anvilmcp.yaml
deleted file mode 100644
index 4297328..0000000
--- a/sandbox/anvilmcp.yaml
+++ /dev/null
@@ -1,45 +0,0 @@
-# Default sandbox config for anvilmcp execute_code
-cwd: temp  # Use temp workspace (cleaned up after execution)
-filesystem:
-  ro:
-    - "/etc/alternatives"
-    - "/etc/ld.so.cache"
-    - "/etc/passwd"
-    - "{HOME}/.local/share/anvillm/mail"
-    - "/dev/urandom"
-  rox:
-    - "/usr"
-    - "/lib"
-    - "/lib64"
-    - "/bin"
-    - "{HOME}/go/bin"
-    - "{HOME}/bin"
-    - "{HOME}/.local/bin"
-    - "{HOME}/opt"
-    - "{PLAN9}/bin"
-  rw:
-    - "/dev/null"
-    - "/tmp"
-    - "{NAMESPACE}"
-    - "{XDG_RUNTIME_DIR}/superpowerd"
-  rwx:
-    - "{CWD}"
-    - "{HOME}/mnt/ollie"
-    - "{HOME}/mnt/anvillm"
-    - "{HOME}/mnt/beads"
-    - "{HOME}/mnt/denote"
-env:
-  - NAMESPACE
-  - OLLIE_9MOUNT
-  - PATH
-  - HOME
-  - PLAN9
-  - DISPLAY
-  - WAYLAND_DISPLAY
-  - USER
-  - AGENT_ID
-  - SUPERPOWERD_SESSION_TOKEN
-  - SUPERPOWERD_SOCKET_DIR
-  - XDG_RUNTIME_DIR
-network:
-  unrestricted: true
diff --git a/sandbox/default.yaml b/sandbox/default.yaml
deleted file mode 100644
index 83695ae..0000000
--- a/sandbox/default.yaml
+++ /dev/null
@@ -1,118 +0,0 @@
-# Default role: combined most-permissive settings from all tasks/roles
-cwd: "{CWD}"
-filesystem:
-  ro:
-    - "{XDG_CONFIG_HOME}/git"
-    - "{HOME}/.ssh"
-    - "{HOME}/.netrc"
-    - "{HOME}/.local/share/anvillm/mail"
-    - "/etc/gitconfig"
-    - "/etc/gitattributes"
-    - "/etc/ssh/ssh_config"
-    - "/etc/ssh/ssh_known_hosts"
-    - "/etc/magic"
-    - "/var/log"
-    - "/run/systemd"
-    - "/var/log/journal"
-    - "/etc/systemd"
-    - "/proc"
-    - "/sys"
-    - "{HOME}/.jenkins"
-    - "{HOME}/.psqlrc"
-    - "{HOME}/.pgpass"
-    - "{HOME}/.aws"
-    - "{HOME}/.ansible"
-    - "{HOME}/.ansible.cfg"
-    - "{HOME}/.jira.d"
-    - "{HOME}/.my.cnf"
-    - "{HOME}/.mylogin.cnf"
-    - "{XDG_CONFIG_HOME}/gh"
-    - "{XDG_DATA_HOME}/gh/extensions"
-    - "/dev"
-  rw:
-    - "{HOME}/.ssh/known_hosts"
-    - "{HOME}/pCloudDrive"
-    - "{HOME}/.pcloud"
-    - "{HOME}/.git-credentials"
-    - "{XDG_CONFIG_HOME}/git/credentials"
-    - "{XDG_RUNTIME_DIR}/git/"
-    - "{HOME}/.mcpt"
-    - "{HOME}/doc"
-    - "{HOME}/.gnupg"
-    - "{XDG_DOCUMENTS_DIR}"
-    - "{XDG_CONFIG_HOME}/.jira"
-    - "{HOME}/.m2"
-    - "{HOME}/.gradle"
-    - "/var/run/docker.sock"
-    - "{HOME}/.docker"
-    - "{HOME}/.pnpm-store"
-    - "{XDG_CONFIG_HOME}/yarn"
-    - "{HOME}/.yarnrc.yml"
-    - "{HOME}/.npmrc"
-    - "{HOME}/.ansible/tmp"
-    - "{XDG_RUNTIME_DIR}"
-    - "{XDG_DATA_HOME}/containers"
-    - "{XDG_CONFIG_HOME}/containers"
-    - "{XDG_CONFIG_HOME}/pip"
-    - "{HOME}/.pip"
-    - "{HOME}/.cargo"
-    - "{HOME}/.rustup"
-    - "{XDG_CONFIG_HOME}/nvim"
-    - "{XDG_CONFIG_HOME}/vim"
-    - "{XDG_DATA_HOME}/nvim"
-    - "{XDG_STATE_HOME}/nvim"
-    - "{HOME}/.local/share/anvillm"
-    - "{HOME}/.vimrc"
-    - "{HOME}/.vim"
-    - "{HOME}/.emacs.d"
-    - "{HOME}/.config/emacs"
-    - "/etc"
-    - "/usr/local/etc"
-    - "/dev/urandom"
-    - "/dev/random"
-    - "/dev/null"
-    - "/dev/fuse"
-  rox:
-    - "{HOME}/go/bin"
-    - "{HOME}/env"
-    - "/proc/self/fd"
-    - "/proc/self/cmdline"
-  rwx:
-    - "{CWD}"
-    - "{PLAN9}"
-    - "{HOME}/bin"
-    - "{HOME}/mnt"
-    - "{HOME}/.pyenv"
-    - "{HOME}/.local/bin"
-    - "{HOME}/.sdkman"
-    - "{HOME}/go"
-    - "{HOME}/.cache/go-build"
-    - "{HOME}/opt"
-    - "{HOME}/src"
-    - "{HOME}/prj"
-    - "{HOME}/.nvm"
-    - "{HOME}/.please"
-    - "{HOME}/.npm"
-    - "{HOME}/.mcp-auth"
-    - "{HOME}/.yarn"
-env:
-  - AGENT_SKILLS_PATH
-  - NAMESPACE
-  - OLLIE_9MOUNT
-  - HOME
-  - TMPDIR
-  - AGENT_ID
-  - PLAN9
-  - JENKINS_USER_ID
-  - JENKINS_API_TOKEN
-  - JENKINS_MCP_AUTH
-  - JIRA_API_TOKEN
-  - BITBUCKET_ACCESS_TOKEN
-  - BITBUCKET_TOKEN
-  - BITBUCKET_USERNAME
-  - PCLOUD_USER
-  - EDITOR
-  - GIT_SEQUENCE_EDITOR
-  - SUPERPOWERD_SESSION_TOKEN
-network:
-  unrestricted: true