The Sandbox should be able to list its installed pods.

lib/cocoapods/local_pod.rb

@@ -6,6 +6,10 @@ module Pod
       @specification, @sandbox = specification, sandbox
     end
     
+    def self.from_podspec(podspec, sandbox)
+      new(Specification.from_file(podspec), sandbox)
+    end
+    
     def root
       @sandbox.root + specification.name
     end

lib/cocoapods/sandbox.rb

+require 'fileutils'
+
 module Pod
   class Sandbox
     attr_reader :root
     
     def initialize(path)
-      @root = path
+      @root = Pathname.new(path)
       @header_search_paths = []
       
       FileUtils.mkdir_p(@root)
@@ -41,5 +43,11 @@ module Pod
     def prepare_for_install
       headers_root.rmtree if headers_root.exist?
     end
+    
+    def installed_pods
+      Dir[root + "**/*.podspec"].map do |podspec|
+        LocalPod.from_podspec(Pathname.new(podspec), self)
+      end
+    end
   end
 end

spec/unit/sandbox_spec.rb

@@ -72,5 +72,4 @@ describe Pod::Sandbox do
     @sandbox.prepare_for_install
     @sandbox.headers_root.should.not.exist
   end
-  
 end