diff --git a/packages/xen-api/package.json b/packages/xen-api/package.json
index 2038920fc..51eb504f8 100644
--- a/packages/xen-api/package.json
+++ b/packages/xen-api/package.json
@@ -39,6 +39,7 @@
     "exec-promise": "^0.7.0",
     "http-request-plus": "^0.5.0",
     "iterable-backoff": "^0.0.0",
+    "jest-diff": "^23.5.0",
     "json-rpc-protocol": "^0.12.0",
     "kindof": "^2.0.0",
     "lodash": "^4.17.4",
diff --git a/packages/xen-api/src/cli.js b/packages/xen-api/src/cli.js
index c15821d4e..0afbefbd0 100755
--- a/packages/xen-api/src/cli.js
+++ b/packages/xen-api/src/cli.js
@@ -4,6 +4,7 @@ import 'babel-polyfill'
 
 import blocked from 'blocked'
 import createDebug from 'debug'
+import diff from 'jest-diff'
 import eventToPromise from 'event-to-promise'
 import execPromise from 'exec-promise'
 import minimist from 'minimist'
@@ -81,6 +82,7 @@ const main = async args => {
   })
   repl.context.xapi = xapi
 
+  repl.context.diff = (a, b) => console.log('%s', diff(a, b))
   repl.context.find = predicate => find(xapi.objects.all, predicate)
   repl.context.findAll = predicate => filter(xapi.objects.all, predicate)
 
diff --git a/yarn.lock b/yarn.lock
index e29f518f3..18107a7d7 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -6515,6 +6515,15 @@ jest-diff@^23.2.0:
     jest-get-type "^22.1.0"
     pretty-format "^23.2.0"
 
+jest-diff@^23.5.0:
+  version "23.5.0"
+  resolved "https://registry.yarnpkg.com/jest-diff/-/jest-diff-23.5.0.tgz#250651a433dd0050290a07642946cc9baaf06fba"
+  dependencies:
+    chalk "^2.0.1"
+    diff "^3.2.0"
+    jest-get-type "^22.1.0"
+    pretty-format "^23.5.0"
+
 jest-docblock@^23.2.0:
   version "23.2.0"
   resolved "https://registry.yarnpkg.com/jest-docblock/-/jest-docblock-23.2.0.tgz#f085e1f18548d99fdd69b20207e6fd55d91383a7"
@@ -8980,6 +8989,13 @@ pretty-format@^23.0.0, pretty-format@^23.2.0:
     ansi-regex "^3.0.0"
     ansi-styles "^3.2.0"
 
+pretty-format@^23.5.0:
+  version "23.5.0"
+  resolved "https://registry.yarnpkg.com/pretty-format/-/pretty-format-23.5.0.tgz#0f9601ad9da70fe690a269cd3efca732c210687c"
+  dependencies:
+    ansi-regex "^3.0.0"
+    ansi-styles "^3.2.0"
+
 pretty-hrtime@^1.0.0:
   version "1.0.3"
   resolved "https://registry.yarnpkg.com/pretty-hrtime/-/pretty-hrtime-1.0.3.tgz#b7e3ea42435a4c9b2759d99e0f201eb195802ee1"