diff --git a/context.go b/context.go
index daa5001..71ff757 100644
--- a/context.go
+++ b/context.go
@@ -4,6 +4,14 @@
 	"net/http"
 )
 
+// Provider structures exist for each tangible provider of OpenStack service.
+// For example, Rackspace, Hewlett-Packard, and NASA might have their own instance of this structure.
+//
+// At a minimum, a provider must expose an authentication endpoint.
+type Provider struct {
+	AuthEndpoint string
+}
+
 // Context structures encapsulate Gophercloud-global state in a manner which
 // facilitates easier unit testing.  As a user of this SDK, you'll never
 // have to use this structure, except when contributing new code to the SDK.
@@ -32,6 +40,54 @@
 // UseCustomClient configures the context to use a customized HTTP client
 // instance.  By default, TestContext() will return a Context which uses
 // the net/http package's default client instance.
-func (c *Context) UseCustomClient(hc *http.Client) {
+func (c *Context) UseCustomClient(hc *http.Client) *Context {
 	c.httpClient = hc
+	return c
+}
+
+// RegisterProvider allows a unit test to register a mythical provider convenient for testing.
+// If the provider structure lacks adequate configuration, or the configuration given has some
+// detectable error, an ErrConfiguration error will result.
+func (c *Context) RegisterProvider(name string, p Provider) error {
+	if p.AuthEndpoint == "" {
+		return ErrConfiguration
+	}
+
+	c.providerMap[name] = p
+	return nil
+}
+
+// WithProvider offers convenience for unit tests.
+func (c *Context) WithProvider(name string, p Provider) *Context {
+	err := c.RegisterProvider(name, p)
+	if err != nil {
+		panic(err)
+	}
+	return c
+}
+
+// ProviderByName will locate a provider amongst those previously registered, if it exists.
+// If the named provider has not been registered, an ErrProvider error will result.
+func (c *Context) ProviderByName(name string) (p Provider, err error) {
+	for provider, descriptor := range c.providerMap {
+		if name == provider {
+			return descriptor, nil
+		}
+	}
+	return Provider{}, ErrProvider
+}
+
+// Instantiates a Cloud Servers object for the provider given.
+func (c *Context) ComputeApi(acc AccessProvider, criteria ApiCriteria) (ComputeProvider, error) {
+	url := acc.FirstEndpointUrlByCriteria(criteria)
+	if url == "" {
+		return nil, ErrEndpoint
+	}
+
+	gcp := &genericCloudProvider{
+		endpoint: url,
+		context:  c,
+	}
+
+	return gcp, nil
 }