diff --git a/cmd/toolsrv/internal/exec/exec.go b/cmd/toolsrv/internal/exec/exec.go
index 403acb0..2c8d7a8 100644
--- a/cmd/toolsrv/internal/exec/exec.go
+++ b/cmd/toolsrv/internal/exec/exec.go
@@ -57,7 +57,6 @@ func ExecuteTool(ctx context.Context, info toolsrv.ToolInfo, args json.RawMessag
 	// Extract dispatch-level flags from args
 	bypassed := false
 	timeout := cfg.Timeout // 0 = no timeout; caller sets default
-	sandboxName := "default"
 
 	var argMap map[string]interface{}
 	if err := json.Unmarshal(args, &argMap); err == nil {
@@ -82,12 +81,7 @@ func ExecuteTool(ctx context.Context, info toolsrv.ToolInfo, args json.RawMessag
 			}
 			delete(argMap, "timeout")
 		}
-		if s, ok := argMap["sandbox"]; ok {
-			if v, ok := s.(string); ok && v != "" {
-				sandboxName = v
-			}
-			delete(argMap, "sandbox")
-		}
+		delete(argMap, "sandbox") // ignored, single config
 		args, _ = json.Marshal(argMap)
 	}
 
@@ -115,7 +109,7 @@ func ExecuteTool(ctx context.Context, info toolsrv.ToolInfo, args json.RawMessag
 		bypassCode := fmt.Sprintf("cat <<'OLLIE_EOF' | %s\n%s\nOLLIE_EOF", toolPath, stdinData)
 		result, err = executeBypassDirect(ctx, bypassCode, cwd, cfg.Env, timeout, false)
 	} else {
-		result, err = executeSandboxed(ctx, toolPath, stdinData, cwd, cfg.Env, timeout, sandboxName, cfg.Yolo, cfg.Output, cfg.Started)
+		result, err = executeSandboxed(ctx, toolPath, stdinData, cwd, cfg.Env, timeout, cfg.Yolo, cfg.Output, cfg.Started)
 	}
 
 	if err != nil {
@@ -130,13 +124,13 @@ func ExecuteTool(ctx context.Context, info toolsrv.ToolInfo, args json.RawMessag
 }
 
 // executeSandboxed runs a tool script inside the sandbox.
-func executeSandboxed(ctx context.Context, toolPath, stdinData, cwd string, envExtra map[string]string, timeout int, sandboxName string, yolo bool, streamOut io.Writer, started chan *os.Process) (string, error) {
+func executeSandboxed(ctx context.Context, toolPath, stdinData, cwd string, envExtra map[string]string, timeout int, yolo bool, streamOut io.Writer, started chan *os.Process) (string, error) {
 	var sandboxCfg *sandbox.Config
 	if !yolo {
-		cfgPath := filepath.Join(paths.CfgDir(), "sandbox", sandboxName+".yaml")
+		cfgPath := filepath.Join(paths.CfgDir(), "sandbox.yaml")
 		f, err := os.Open(cfgPath)
 		if err != nil {
-			return "", fmt.Errorf("sandbox %q not found: %w", sandboxName, err)
+			return "", fmt.Errorf("sandbox config not found: %w", err)
 		}
 		defer f.Close()
 		var loadErr error
diff --git a/cmd/toolsrv/internal/sandbox/config.go b/cmd/toolsrv/internal/sandbox/config.go
index 54e5731..bb1b19b 100644
--- a/cmd/toolsrv/internal/sandbox/config.go
+++ b/cmd/toolsrv/internal/sandbox/config.go
@@ -50,9 +50,6 @@ type AdvancedConfig struct {
 	AddExec bool `yaml:"add_exec"`
 }
 
-// defaultSandbox is the sandbox config used when none is specified
-const defaultSandbox = "default"
-
 // EnvFunc looks up an environment variable by name.
 type EnvFunc func(string) string
 
diff --git a/cmd/toolsrv/internal/sandbox/default.yaml b/cmd/toolsrv/internal/sandbox/sandbox.yaml
similarity index 100%
rename from cmd/toolsrv/internal/sandbox/default.yaml
rename to cmd/toolsrv/internal/sandbox/sandbox.yaml
diff --git a/cmd/toolsrv/sandbox-remote.yaml b/cmd/toolsrv/sandbox-remote.yaml
deleted file mode 100644
index 83bddf5..0000000
--- a/cmd/toolsrv/sandbox-remote.yaml
+++ /dev/null
@@ -1,50 +0,0 @@
-# Default sandbox config for ollie-remote.
-# Simpler than local — only needs project execution access.
-filesystem:
-  ro:
-    - "/etc"
-    - "/proc"
-    - "/sys"
-    - "/dev"
-    - "{HOME}/.ssh/known_hosts"
-    - "{HOME}/.gitconfig"
-    - "{HOME}/.netrc"
-  rw:
-    - "/dev/null"
-    - "/dev/zero"
-    - "/dev/urandom"
-    - "/dev/random"
-  rox:
-    - "/usr"
-    - "/lib"
-    - "/lib64"
-    - "/bin"
-    - "/sbin"
-    - "{HOME}/bin"
-    - "{HOME}/go/bin"
-    - "{HOME}/.cargo/bin"
-    - "{HOME}/.local/bin"
-    - "{HOME}/.nvm"
-    - "{HOME}/.pyenv"
-    - "{XDG_CONFIG_HOME}/ollie/tools"
-  rwx:
-    - "{CWD}"
-    - "{TMPDIR}"
-    - "/tmp"
-    - "{HOME}/.cache"
-    - "{HOME}/go"
-    - "{HOME}/.cargo"
-    - "{HOME}/.npm"
-env:
-  - PATH
-  - HOME
-  - TMPDIR
-  - GOPATH
-  - GOBIN
-  - XDG_CONFIG_HOME
-  - XDG_DATA_HOME
-  - SSH_AUTH_SOCK
-network:
-  unrestricted: true
-general:
-  best_effort: true
diff --git a/cmd/toolsrv/internal/sandbox/restricted.yaml b/doc/sandbox-restricted.sample.yaml
similarity index 100%
rename from cmd/toolsrv/internal/sandbox/restricted.yaml
rename to doc/sandbox-restricted.sample.yaml
diff --git a/justfile b/justfile
index 5fb5fb9..36b6d07 100644
--- a/justfile
+++ b/justfile
@@ -126,9 +126,7 @@ install-data:
     install -m644 data/prompts/agent-theo.md {{cfg}}/prompts/agent-theo.md
     install -m644 data/prompts/user-preferences.md {{cfg}}/prompts/user-preferences.md
     # Sandbox
-    mkdir -p {{cfg}}/sandbox
-    install -m644 cmd/toolsrv/internal/sandbox/default.yaml {{cfg}}/sandbox/default.yaml
-    install -m644 cmd/toolsrv/internal/sandbox/restricted.yaml {{cfg}}/sandbox/restricted.yaml
+    install -m644 cmd/toolsrv/internal/sandbox/sandbox.yaml {{cfg}}/sandbox.yaml
     # Skills
     mkdir -p {{cfg}}/skills/acme-api {{cfg}}/skills/agent-kb {{cfg}}/skills/duckduckgo-search {{cfg}}/skills/github-cli {{cfg}}/skills/rc-shell \
         {{cfg}}/skills/web-dev-browser-screencapture {{cfg}}/skills/write-skills