diff --git a/README.md b/README.md
index c9419ec..d9e93f6 100644
--- a/README.md
+++ b/README.md
@@ -56,6 +56,11 @@ In Progress
 * [GunDB](https://gundb.io) Support
 * OpenID support
 
+API
+---
+
+API docs are here https://git.daplie.com/Daplie/com.example.hello
+
 Structure
 =====
 
@@ -69,12 +74,15 @@ Currently being tested with Ubuntu, Raspbian, and Debian on Digital Ocean, Raspb
 │   ├── boot
 │   ├── holepunch
 │   └── lib
+├── etc
+│   └── client-api-grants
 ├── node_modules
 ├── packages
 │   ├── apis
 │   ├── pages
 │   └── services
 └── var
+    └── sites
 ```
 
 * `core` contains all walnut code
@@ -243,3 +251,10 @@ The permissions:
           com.example.hello     # refers to /srv/walnut/packages/pages/com.example.hello
           '''
 ```
+
+API
+---
+
+```
+req.apiUrlPrefix => https://api.example.com/api/tld.domain.pkg
+```
diff --git a/install.sh b/install.sh
index e41a8d9..e31fced 100755
--- a/install.sh
+++ b/install.sh
@@ -219,16 +219,19 @@ my_app_launchd_service="Library/LaunchDaemons/${my_app_pkg_name}.plist"
 # Install
 install_my_app()
 {
+  # This function shouldn't need to use $sudo_cmd because it is called immediately after
+  # /srv/walnut is chown-ed and we only mess with things in that directory.
+
   #git clone git@git.daplie.com:Daplie/walnut.js.git
   #git clone https://git.daplie.com/Daplie/walnut.js.git /srv/walnut/core
-  sudo mkdir -p /srv/walnut/{core,lib,var,etc,node_modules}
+  mkdir -p /srv/walnut/{core,lib,var,etc,node_modules}
   rm -rf /srv/walnut/core/node_modules
   ln -sf ../node_modules /srv/walnut/core/node_modules
-  sudo mkdir -p /srv/walnut/var/sites
-  sudo mkdir -p /srv/walnut/etc/org.oauth3.consumer
-  sudo mkdir -p /srv/walnut/etc/org.oauth3.provider
-  sudo mkdir -p /srv/walnut/etc/client-api-grants
-  sudo mkdir -p /srv/walnut/packages/{rest,api,pages,services}
+  mkdir -p /srv/walnut/var/sites
+  mkdir -p /srv/walnut/etc/org.oauth3.consumer
+  mkdir -p /srv/walnut/etc/org.oauth3.provider
+  mkdir -p /srv/walnut/etc/client-api-grants
+  mkdir -p /srv/walnut/packages/{rest,api,pages,services}
 
   # backwards compat
   if [ -d /srv/walnut/packages/client-api-grants ]; then
@@ -249,14 +252,14 @@ install_my_app()
   popd
 }
 
-sudo mkdir -p /srv/walnut
-sudo chown -R $(whoami) /srv/walnut
+$sudo_cmd mkdir -p /srv/walnut
+$sudo_cmd chown -R $(whoami) /srv/walnut
 
 install_my_app
 create_skeleton
 install_uninstaller
 install_service
 
-sudo chown -R www-data:www-data /srv/walnut || true
-sudo chown -R _www:_www /srv/walnut || true
-sudo chmod -R ug+rwX /srv/walnut
+$sudo_cmd chown -R www-data:www-data /srv/walnut || true
+$sudo_cmd chown -R _www:_www /srv/walnut || true
+$sudo_cmd chmod -R ug+rwX /srv/walnut
diff --git a/lib/apis.js b/lib/apis.js
index d0ae567..69690f7 100644
--- a/lib/apis.js
+++ b/lib/apis.js
@@ -318,6 +318,7 @@ module.exports.create = function (xconfx, apiFactories, apiDeps) {
         var _stripe_test;
         var _mandrill;
         var _mailchimp;
+        var _twilio;
         myApp.use('/', function preHandler(req, res, next) {
           return getSiteConfig(clientUrih).then(function (siteConfig) {
             Object.defineProperty(req, 'getSiteMailer', {
@@ -429,6 +430,27 @@ module.exports.create = function (xconfx, apiFactories, apiDeps) {
               }
             });
 
+            var caps = {
+              'com.daplie.tel.twilio': function (/*opts*/) {
+                if (_twilio) {
+                  return _twilio;
+                }
+
+                var Twilio = require('twilio');
+                _twilio = new Twilio.RestClient(siteConfig['twilio.com'].id, siteConfig['twilio.com'].auth);
+                return apiDeps.Promise.resolve(_twilio);
+              }
+            };
+            req.getSiteCapability = function (capname, opts) {
+              if (caps[capname]) {
+                return caps[capname](opts);
+              }
+              return apiDeps.Promise.reject(
+                new Error("['" + req.clientApiUri + '/' + pkgId + "'] "
+                  + "capability '" + capname + "' not implemented")
+              );
+            };
+
             req._walnutOriginalUrl = req.url;
             // "/path/api/com.example/hello".replace(/.*\/api\//, '').replace(/([^\/]*\/+)/, '/') => '/hello'
             req.url = req.url.replace(/\/api\//, '').replace(/.*\/api\//, '').replace(/([^\/]*\/+)/, '/');
@@ -517,6 +539,12 @@ module.exports.create = function (xconfx, apiFactories, apiDeps) {
       var hasBeenHandled = false;
 
       // Existing (Deprecated)
+      Object.defineProperty(req, 'apiUrlPrefix', {
+        enumerable: true
+      , configurable: false
+      , writable: false
+      , value: 'https://' + clientApiUri + '/' + pkgId
+      });
       Object.defineProperty(req, 'experienceId', {
         enumerable: true
       , configurable: false