diff --git a/src/__phutil_library_map__.php b/src/__phutil_library_map__.php
index 2279b6cf..72890ccd 100644
--- a/src/__phutil_library_map__.php
+++ b/src/__phutil_library_map__.php
@@ -21,6 +21,7 @@ phutil_register_library_map(array(
     'ArcanistChooseInvalidRevisionException' => 'exception',
     'ArcanistChooseNoRevisionsException' => 'exception',
     'ArcanistCommitWorkflow' => 'workflow/commit',
+    'ArcanistConduitLinter' => 'lint/linter/conduit',
     'ArcanistConfiguration' => 'configuration',
     'ArcanistCoverWorkflow' => 'workflow/cover',
     'ArcanistDiffChange' => 'parser/diff/change',
@@ -119,6 +120,7 @@ phutil_register_library_map(array(
     'ArcanistBundleTestCase' => 'ArcanistPhutilTestCase',
     'ArcanistCallConduitWorkflow' => 'ArcanistBaseWorkflow',
     'ArcanistCommitWorkflow' => 'ArcanistBaseWorkflow',
+    'ArcanistConduitLinter' => 'ArcanistLinter',
     'ArcanistCoverWorkflow' => 'ArcanistBaseWorkflow',
     'ArcanistDiffParserTestCase' => 'ArcanistPhutilTestCase',
     'ArcanistDiffUtilsTestCase' => 'ArcanistPhutilTestCase',
diff --git a/src/lint/linter/conduit/ArcanistConduitLinter.php b/src/lint/linter/conduit/ArcanistConduitLinter.php
new file mode 100644
index 00000000..97d1eaf2
--- /dev/null
+++ b/src/lint/linter/conduit/ArcanistConduitLinter.php
@@ -0,0 +1,110 @@
+<?php
+
+/*
+ * Copyright 2012 Facebook, Inc.
+ *
+ * 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.
+ */
+
+/**
+ * Implements linting via Conduit RPC call.
+ * Slow by definition, but allows sophisticated linting that relies on
+ * stuff like big indexes of a codebase.
+ * Recommended usage is to gate these to the advice lint level.
+ *
+ * The conduit endpoint should implement a method named the same as
+ * the value of ArcanistConduitLinter::CONDUIT_METHOD.
+ *
+ * It takes an array with a key 'file_contents' which is an array mapping
+ * file paths to their complete contents.
+ *
+ * It should return an array mapping those same paths to arrays describing the
+ * lint for each path.
+ *
+ * The lint for a path is described as a list of structured dictionaries.
+ *
+ * The dictionary structure is effectively defined by
+ * ArcanistLintMessage::newFromDictionary.
+ *
+ * Effective keys are:
+ *  'path' => must match passed in path.
+ *  'line'
+ *  'char'
+ *  'code'
+ *  'severity' => Must match a constant in ArcanistLintSeverity.
+ *  'name'
+ *  'description'
+ *  'original' & 'replacement' => optional patch information
+ *
+ * This class is intended for customization via instantiation, not via
+ * subclassing.
+ */
+class ArcanistConduitLinter extends ArcanistLinter {
+  const CONDUIT_METHOD = 'lint.getalllint';
+
+  private $conduitURI;
+  private $linterName;
+  private $lintByPath; // array(/pa/th/ => <lint>), valid after willLintPaths().
+
+  public function __construct($conduit_uri, $linter_name) {
+    $this->conduitURI = $conduit_uri;
+    $this->linterName = $linter_name;
+  }
+
+  public function willLintPaths(array $paths) {
+    // Load all file path data into $this->data.
+    array_map(array($this, 'getData'), $paths);
+
+    $conduit = new ConduitClient($this->conduitURI);
+
+    $this->lintByPath = $conduit->callMethodSynchronous(
+      self::CONDUIT_METHOD,
+      array(
+        'file_contents' => $this->data,
+      )
+    );
+  }
+
+  public function lintPath($path) {
+    $lint_for_path = idx($this->lintByPath, $path);
+    if (!$lint_for_path) {
+      return;
+    }
+
+    foreach ($lint_for_path as $lint) {
+      $this->addLintMessage(ArcanistLintMessage::newFromDictionary($lint));
+    }
+  }
+
+  public function getLinterName() {
+    return $this->linterName;
+  }
+
+  public function getLintSeverityMap() {
+    // The rationale here is that this class will only be used for custom
+    // linting in installations. No two server endpoints will be the same across
+    // different instantiations. Therefore, the server can handle all severity
+    // customization directly.
+    throw new ArcanistUsageException(
+      'ArcanistConduitLinter does not support client-side severity '.
+      'customization.'
+    );
+  }
+
+  public function getLintNameMap() {
+    // See getLintSeverityMap for rationale.
+    throw new ArcanistUsageException(
+      'ArcanistConduitLinter does not support a name map.'
+    );
+  }
+}
diff --git a/src/lint/linter/conduit/__init__.php b/src/lint/linter/conduit/__init__.php
new file mode 100644
index 00000000..6c491881
--- /dev/null
+++ b/src/lint/linter/conduit/__init__.php
@@ -0,0 +1,17 @@
+<?php
+/**
+ * This file is automatically generated. Lint this module to rebuild it.
+ * @generated
+ */
+
+
+
+phutil_require_module('arcanist', 'exception/usage');
+phutil_require_module('arcanist', 'lint/linter/base');
+phutil_require_module('arcanist', 'lint/message');
+
+phutil_require_module('phutil', 'conduit/client');
+phutil_require_module('phutil', 'utils');
+
+
+phutil_require_source('ArcanistConduitLinter.php');