diff --git a/lib/travis/api/app/endpoint/jobs.rb b/lib/travis/api/app/endpoint/jobs.rb
index c57436b4..0cbbb346 100644
--- a/lib/travis/api/app/endpoint/jobs.rb
+++ b/lib/travis/api/app/endpoint/jobs.rb
@@ -32,6 +32,18 @@ class Travis::Api::App
         respond_with service(:find_metadata, params)
       end
 
+      put "/:job_id/metadata" do
+        if params[:description]
+          metadata = service(:update_metadata, params).run
+
+          status metadata ? 204 : 401
+        else
+          status 422
+
+          { "error" => "Must include a description" }
+        end
+      end
+
       def archive_url(path)
         "https://s3.amazonaws.com/#{hostname('archive')}#{path}"
       end
diff --git a/spec/integration/v2/jobs_spec.rb b/spec/integration/v2/jobs_spec.rb
index cd001a9e..40adf972 100644
--- a/spec/integration/v2/jobs_spec.rb
+++ b/spec/integration/v2/jobs_spec.rb
@@ -76,10 +76,35 @@ describe 'Jobs' do
     end
   end
 
-  it "/jobs/:id/metadata" do
+  it "GET /jobs/:id/metadata" do
     metadata_provider = Factory(:metadata_provider)
     metadata = metadata_provider.metadata.create(job_id: job.id, description: "Foobar")
     response = get "/jobs/#{job.id}/metadata", {}, headers
     response.should deliver_json_for(Metadata.where(id: metadata.id), version: 'v2')
   end
+
+  describe "PUT /jobs/:id/metadata" do
+    context "with valid credentials" do
+      it "responds with a 204" do
+        metadata_provider = Factory(:metadata_provider)
+        response = put "/jobs/#{job.id}/metadata", { username: metadata_provider.api_username, key: metadata_provider.api_key, description: "Foobar" }, headers
+        response.status.should eq(204)
+      end
+    end
+
+    context "without a description" do
+      it "responds with a 422" do
+        metadata_provider = Factory(:metadata_provider)
+        response = put "/jobs/#{job.id}/metadata", { username: metadata_provider.api_username, key: metadata_provider.api_key }, headers
+        response.status.should eq(422)
+      end
+    end
+
+    context "with invalid credentials" do
+      it "responds with a 401" do
+        response = put "/jobs/#{job.id}/metadata", { username: "invalid-username", key: "invalid-key", description: "Foobar" }, headers
+        response.status.should eq(401)
+      end
+    end
+  end
 end
diff --git a/spec/unit/endpoint/jobs_spec.rb b/spec/unit/endpoint/jobs_spec.rb
index 70f288a9..2a650439 100644
--- a/spec/unit/endpoint/jobs_spec.rb
+++ b/spec/unit/endpoint/jobs_spec.rb
@@ -2,8 +2,13 @@ require 'spec_helper'
 
 describe Travis::Api::App::Endpoint::Jobs do
   let(:job) { Factory(:test) }
+  let(:provider) { Factory(:metadata_provider) }
 
   it "GET /jobs/:id/metadata" do
     get("/jobs/#{job.id}/metadata", {}, "HTTP_ACCEPT" => "application/vnd.travis-ci.2+json, */*; q=0.01").should be_ok
   end
+
+  it "PUT /jobs/:id/metadata" do
+    response = put("/jobs/#{job.id}/metadata", { "username" => provider.api_username, "key" => provider.api_key, "description" => "Foobar" }, "HTTP_ACCEPT" => "application/vnd.travis-ci.2+json, */*; q=0.01").should be_successful
+  end
 end