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diff --git a/src/main/java/com/google/devtools/build/lib/rules/workspace/HttpArchiveRule.java b/src/main/java/com/google/devtools/build/lib/rules/workspace/HttpArchiveRule.java
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+// Copyright 2014 Google Inc. All rights reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//    http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package com.google.devtools.build.lib.bazel.rules.workspace;
+
+import static com.google.devtools.build.lib.packages.Attribute.attr;
+import static com.google.devtools.build.lib.packages.Type.STRING;
+
+import com.google.devtools.build.lib.analysis.RuleDefinition;
+import com.google.devtools.build.lib.analysis.RuleDefinitionEnvironment;
+import com.google.devtools.build.lib.packages.RuleClass;
+import com.google.devtools.build.lib.packages.RuleClass.Builder;
+import com.google.devtools.build.lib.packages.RuleClass.Builder.RuleClassType;
+
+/**
+ * Rule definition for the http_archive rule.
+ */
+public class HttpArchiveRule implements RuleDefinition {
+
+  public static final String NAME = "http_archive";
+
+  @Override
+  public RuleClass build(Builder builder, RuleDefinitionEnvironment environment) {
+    return builder
+        /* <!-- #BLAZE_RULE(http_archive).ATTRIBUTE(url) -->
+        A URL to an archive file containing a Bazel repository.
+        ${SYNOPSIS}
+
+        <p>This must be an HTTP URL that ends with .zip. There is no support for authentication or
+          redirection.</p>
+        <!-- #END_BLAZE_RULE.ATTRIBUTE --> */
+        .add(attr("url", STRING).mandatory())
+        /* <!-- #BLAZE_RULE(http_archive).ATTRIBUTE(sha256) -->
+        The expected SHA-256 hash of the file downloaded.
+        ${SYNOPSIS}
+
+        <p>This must match the SHA-256 hash of the file downloaded.</p>
+        <!-- #END_BLAZE_RULE.ATTRIBUTE --> */
+        .add(attr("sha256", STRING).mandatory())
+        .setWorkspaceOnly()
+        .build();
+  }
+
+  @Override
+  public Metadata getMetadata() {
+    return RuleDefinition.Metadata.builder()
+        .name(HttpArchiveRule.NAME)
+        .type(RuleClassType.WORKSPACE)
+        .ancestors(WorkspaceBaseRule.class)
+        .factoryClass(WorkspaceConfiguredTargetFactory.class)
+        .build();
+  }
+}
+
+/*<!-- #BLAZE_RULE (NAME = http_archive, TYPE = OTHER, FAMILY = General)[GENERIC_RULE] -->
+
+${ATTRIBUTE_SIGNATURE}
+
+<p>Downloads a Bazel repository as a compressed archive file, decompresses it, and makes its
+  targets available for binding.</p>
+
+<p>Only Zip-formatted archives with the .zip extension are supported.</p>
+
+${ATTRIBUTE_DEFINITION}
+
+<h4 id="http_archive_examples">Examples</h4>
+
+<p>Suppose the current repository contains the source code for a chat program, rooted at the
+  directory <i>~/chat-app</i>. It needs to depend on an SSL library which is available from
+  <i>http://example.com/openssl.zip</i>. This .zip file contains the following directory
+  structure:</p>
+
+<pre class="code">
+WORKSPACE
+src/
+  BUILD
+  openssl.cc
+  openssl.h
+</pre>
+
+<p><i>src/BUILD</i> contains the following target definition:</p>
+
+<pre class="code">
+cc_library(
+    name = "openssl-lib",
+    srcs = ["openssl.cc"],
+    hdrs = ["openssl.h"],
+)
+</pre>
+
+<p>Targets in the <i>~/chat-app</i> repository can depend on this target if the following lines are
+  added to <i>~/chat-app/WORKSPACE</i>:</p>
+
+<pre class="code">
+http_archive(
+    name = "my-ssl",
+    url = "http://example.com/openssl.zip",
+    sha256 = "03a58ac630e59778f328af4bcc4acb4f80208ed4",
+)
+
+bind(
+    name = "openssl",
+    actual = "@my-ssl//src:openssl-lib",
+)
+</pre>
+
+<p>See <a href="#bind_examples">Bind</a> for how to use bound targets.</p>
+
+<!-- #END_BLAZE_RULE -->*/