diff --git a/src/main/scala/gitbucket/core/api/ApiCommits.scala b/src/main/scala/gitbucket/core/api/ApiCommits.scala
new file mode 100644
index 0000000..dc3e2ad
--- /dev/null
+++ b/src/main/scala/gitbucket/core/api/ApiCommits.scala
@@ -0,0 +1,124 @@
+package gitbucket.core.api
+
+import gitbucket.core.model.Account
+import gitbucket.core.util.JGitUtil.{CommitInfo, DiffInfo}
+import gitbucket.core.util.RepositoryName
+import org.eclipse.jgit.diff.DiffEntry.ChangeType
+import ApiCommits._
+
+case class ApiCommits(
+  url: ApiPath,
+  sha: String,
+  html_url: ApiPath,
+  comment_url: ApiPath,
+  commit: Commit,
+  author: ApiUser,
+  committer: ApiUser,
+  parents: Seq[Tree],
+  stats: Stats,
+  files: Seq[File]
+)
+
+object ApiCommits {
+  case class Commit(
+    url: ApiPath,
+    author: ApiPersonIdent,
+    committer: ApiPersonIdent,
+    message: String,
+    comment_count: Int,
+    tree: Tree
+  )
+
+  case class Tree(
+    url: ApiPath,
+    sha: String
+  )
+
+  case class Stats(
+    additions: Int,
+    deletions: Int,
+    total: Int
+  )
+
+  case class File(
+    filename: String,
+    additions: Int,
+    deletions: Int,
+    changes: Int,
+    status: String,
+    raw_url: ApiPath,
+    blob_url: ApiPath,
+    patch: String
+  )
+
+
+  def apply(repositoryName: RepositoryName, commitInfo: CommitInfo, diffs: Seq[DiffInfo], author: Account, committer: Account,
+            commentCount: Int): ApiCommits = {
+    val files = diffs.map { diff =>
+      var additions = 0
+      var deletions = 0
+
+      diff.patch.getOrElse("").split("\n").foreach { line =>
+        if(line.startsWith("+")) additions = additions + 1
+        if(line.startsWith("-")) deletions = deletions + 1
+      }
+
+      File(
+        filename = if(diff.changeType == ChangeType.DELETE){ diff.oldPath } else { diff.newPath },
+        additions = additions,
+        deletions = deletions,
+        changes = additions + deletions,
+        status = diff.changeType match {
+          case ChangeType.ADD    => "added"
+          case ChangeType.MODIFY => "modified"
+          case ChangeType.DELETE => "deleted"
+          case ChangeType.RENAME => "renamed"
+          case ChangeType.COPY   => "copied"
+        },
+        raw_url = if(diff.changeType == ChangeType.DELETE){
+          ApiPath(s"/${repositoryName.fullName}/raw/${commitInfo.parents.head}/${diff.oldPath}")
+        } else {
+          ApiPath(s"/${repositoryName.fullName}/raw/${commitInfo.id}/${diff.newPath}")
+        },
+        blob_url = if(diff.changeType == ChangeType.DELETE){
+          ApiPath(s"/${repositoryName.fullName}/blob/${commitInfo.parents.head}/${diff.oldPath}")
+        } else {
+          ApiPath(s"/${repositoryName.fullName}/blob/${commitInfo.id}/${diff.newPath}")
+        },
+        patch = diff.patch.getOrElse("")
+      )
+    }
+
+    ApiCommits(
+      url = ApiPath(s"/api/v3/repos/${repositoryName.fullName}/commits/${commitInfo.id}"),
+      sha = commitInfo.id,
+      html_url = ApiPath(s"${repositoryName.fullName}/commit/${commitInfo.id}"),
+      comment_url = ApiPath(""),
+      commit = Commit(
+        url = ApiPath(s"/api/v3/repos/${repositoryName.fullName}/commits/${commitInfo.id}"),
+        author = ApiPersonIdent.author(commitInfo),
+        committer = ApiPersonIdent.committer(commitInfo),
+        message = commitInfo.shortMessage,
+        comment_count = commentCount,
+        tree = Tree(
+          url = ApiPath(s"/api/v3/repos/${repositoryName.fullName}/tree/${commitInfo.id}"), // TODO This endpoint has not been implemented yet.
+          sha = commitInfo.id
+        )
+      ),
+      author = ApiUser(author),
+      committer = ApiUser(committer),
+      parents = commitInfo.parents.map { parent =>
+        Tree(
+          url = ApiPath(s"/api/v3/repos/${repositoryName.fullName}/tree/${parent}"), // TODO This endpoint has not been implemented yet.
+          sha = parent
+        )
+      },
+      stats = Stats(
+        additions = files.map(_.additions).sum,
+        deletions = files.map(_.deletions).sum,
+        total = files.map(_.additions).sum + files.map(_.deletions).sum
+      ),
+      files = files
+    )
+  }
+}
diff --git a/src/main/scala/gitbucket/core/api/JsonFormat.scala b/src/main/scala/gitbucket/core/api/JsonFormat.scala
index 5a831ef..7164cf6 100644
--- a/src/main/scala/gitbucket/core/api/JsonFormat.scala
+++ b/src/main/scala/gitbucket/core/api/JsonFormat.scala
@@ -33,6 +33,11 @@
     FieldSerializer[ApiComment]() +
     FieldSerializer[ApiContents]() +
     FieldSerializer[ApiLabel]() +
+    FieldSerializer[ApiCommits]() +
+    FieldSerializer[ApiCommits.Commit]() +
+    FieldSerializer[ApiCommits.Tree]() +
+    FieldSerializer[ApiCommits.Stats]() +
+    FieldSerializer[ApiCommits.File]() +
     ApiBranchProtection.enforcementLevelSerializer
 
   def apiPathSerializer(c: Context) = new CustomSerializer[ApiPath](format =>
diff --git a/src/main/scala/gitbucket/core/controller/ApiController.scala b/src/main/scala/gitbucket/core/controller/ApiController.scala
index a680508..6360847 100644
--- a/src/main/scala/gitbucket/core/controller/ApiController.scala
+++ b/src/main/scala/gitbucket/core/controller/ApiController.scala
@@ -12,6 +12,7 @@
 import gitbucket.core.util._
 import gitbucket.core.view.helpers.{isRenderable, renderMarkup}
 import org.eclipse.jgit.api.Git
+import org.eclipse.jgit.revwalk.RevWalk
 import org.scalatra.{Created, NoContent, UnprocessableEntity}
 
 import scala.collection.JavaConverters._
@@ -50,6 +51,7 @@
     with LabelsService
     with MilestonesService
     with PullRequestService
+    with CommitsService
     with CommitStatusService
     with RepositoryCreationService
     with IssueCreationService
@@ -628,6 +630,52 @@
     }) getOrElse NotFound()
   })
 
+  /**
+   * https://developer.github.com/v3/repos/commits/#get-a-single-commit
+   */
+  get("/api/v3/repos/:owner/:repo/commits/:sha")(referrersOnly { repository =>
+    val owner = repository.owner
+    val name  = repository.name
+    val sha   = params("sha")
+
+    using(Git.open(getRepositoryDir(owner, name))){ git =>
+      val repo = git.getRepository
+      val objectId = repo.resolve(sha)
+      val commitInfo = using(new RevWalk(repo)){ revWalk =>
+        new CommitInfo(revWalk.parseCommit(objectId))
+      }
+
+      JsonFormat(ApiCommits(
+        repositoryName = RepositoryName(repository),
+        commitInfo     = commitInfo,
+        diffs          = JGitUtil.getDiffs(git, commitInfo.parents.head, commitInfo.id, false, true),
+        author         = getAccount(commitInfo.authorName, commitInfo.authorEmailAddress),
+        committer      = getAccount(commitInfo.committerName, commitInfo.committerEmailAddress),
+        commentCount   = getCommitComment(repository.owner, repository.name, sha).size
+      ))
+    }
+  })
+
+  private def getAccount(userName: String, email: String): Account = {
+    getAccountByMailAddress(email).getOrElse {
+      Account(
+        userName = userName,
+        fullName = userName,
+        mailAddress = email,
+        password = "xxx",
+        isAdmin = false,
+        url = None,
+        registeredDate = new java.util.Date(),
+        updatedDate = new java.util.Date(),
+        lastLoginDate = None,
+        image = None,
+        isGroupAccount = false,
+        isRemoved = true,
+        description = None
+      )
+    }
+  }
+
   private def isEditable(owner: String, repository: String, author: String)(implicit context: Context): Boolean =
     hasDeveloperRole(owner, repository, context.loginAccount) || author == context.loginAccount.get.userName
 
diff --git a/src/main/scala/gitbucket/core/controller/RepositoryViewerController.scala b/src/main/scala/gitbucket/core/controller/RepositoryViewerController.scala
index df4af27..b13dde1 100644
--- a/src/main/scala/gitbucket/core/controller/RepositoryViewerController.scala
+++ b/src/main/scala/gitbucket/core/controller/RepositoryViewerController.scala
@@ -431,7 +431,7 @@
     try {
       using(Git.open(getRepositoryDir(repository.owner, repository.name))) { git =>
         defining(JGitUtil.getRevCommitFromId(git, git.getRepository.resolve(id))) { revCommit =>
-          JGitUtil.getDiffs(git, id) match {
+          JGitUtil.getDiffs(git, id, false) match {
             case (diffs, oldCommitId) =>
               html.commit(id, new JGitUtil.CommitInfo(revCommit),
                 JGitUtil.getBranchesOfCommit(git, revCommit.getName),
diff --git a/src/main/scala/gitbucket/core/controller/WikiController.scala b/src/main/scala/gitbucket/core/controller/WikiController.scala
index d3f949f..f034602 100644
--- a/src/main/scala/gitbucket/core/controller/WikiController.scala
+++ b/src/main/scala/gitbucket/core/controller/WikiController.scala
@@ -76,7 +76,7 @@
     val Array(from, to) = params("commitId").split("\\.\\.\\.")
 
     using(Git.open(getWikiRepositoryDir(repository.owner, repository.name))){ git =>
-      html.compare(Some(pageName), from, to, JGitUtil.getDiffs(git, from, to, true).filter(_.newPath == pageName + ".md"), repository,
+      html.compare(Some(pageName), from, to, JGitUtil.getDiffs(git, from, to, true, false).filter(_.newPath == pageName + ".md"), repository,
         isEditable(repository), flash.get("info"))
     }
   })
@@ -85,7 +85,7 @@
     val Array(from, to) = params("commitId").split("\\.\\.\\.")
 
     using(Git.open(getWikiRepositoryDir(repository.owner, repository.name))){ git =>
-      html.compare(None, from, to, JGitUtil.getDiffs(git, from, to, true), repository,
+      html.compare(None, from, to, JGitUtil.getDiffs(git, from, to, true, false), repository,
         isEditable(repository), flash.get("info"))
     }
   })
diff --git a/src/main/scala/gitbucket/core/service/PullRequestService.scala b/src/main/scala/gitbucket/core/service/PullRequestService.scala
index a368016..d8d419b 100644
--- a/src/main/scala/gitbucket/core/service/PullRequestService.scala
+++ b/src/main/scala/gitbucket/core/service/PullRequestService.scala
@@ -230,7 +230,7 @@
         helpers.date(commit1.commitTime) == view.helpers.date(commit2.commitTime)
       }
 
-      val diffs = JGitUtil.getDiffs(newGit, oldId.getName, newId.getName, true)
+      val diffs = JGitUtil.getDiffs(newGit, oldId.getName, newId.getName, true, false)
 
       (commits, diffs)
     }
diff --git a/src/main/scala/gitbucket/core/servlet/GitRepositoryServlet.scala b/src/main/scala/gitbucket/core/servlet/GitRepositoryServlet.scala
index fd22630..6d14d2c 100644
--- a/src/main/scala/gitbucket/core/servlet/GitRepositoryServlet.scala
+++ b/src/main/scala/gitbucket/core/servlet/GitRepositoryServlet.scala
@@ -347,7 +347,7 @@
                 diffs._1.collect { case diff if diff.newPath.toLowerCase.endsWith(".md") =>
                   val action = if(diff.changeType == ChangeType.ADD) "created" else "edited"
                   val fileName = diff.newPath
-                  println(action + " - " + fileName + " - " + commit.id)
+                  //println(action + " - " + fileName + " - " + commit.id)
                   (action, fileName, commit.id)
                 }
               }
diff --git a/src/main/scala/gitbucket/core/util/JGitUtil.scala b/src/main/scala/gitbucket/core/util/JGitUtil.scala
index 6e68bf5..802f9d1 100644
--- a/src/main/scala/gitbucket/core/util/JGitUtil.scala
+++ b/src/main/scala/gitbucket/core/util/JGitUtil.scala
@@ -1,5 +1,7 @@
 package gitbucket.core.util
 
+import java.io.ByteArrayOutputStream
+
 import gitbucket.core.service.RepositoryService
 import org.eclipse.jgit.api.Git
 import Directory._
@@ -22,6 +24,7 @@
 
 import org.cache2k.{Cache2kBuilder, CacheEntry}
 import org.eclipse.jgit.api.errors.{InvalidRefNameException, JGitInternalException, NoHeadException, RefAlreadyExistsException}
+import org.eclipse.jgit.diff.{DiffEntry, DiffFormatter}
 import org.eclipse.jgit.dircache.DirCacheEntry
 import org.slf4j.LoggerFactory
 
@@ -114,7 +117,8 @@
     newObjectId: Option[String],
     oldMode: String,
     newMode: String,
-    tooLarge: Boolean
+    tooLarge: Boolean,
+    patch: Option[String]
   )
 
   /**
@@ -515,9 +519,10 @@
   }
 
   /**
-   * Returns the tuple of diff of the given commit and the previous commit id.
+   * Returns the tuple of diff of the given commit and parent commit ids.
+   * DiffInfos returned from this method don't include the patch property.
    */
-  def getDiffs(git: Git, id: String, fetchContent: Boolean = true): (List[DiffInfo], Option[String]) = {
+  def getDiffs(git: Git, id: String, fetchContent: Boolean): (List[DiffInfo], Option[String]) = {
     @scala.annotation.tailrec
     def getCommitLog(i: java.util.Iterator[RevCommit], logs: List[RevCommit]): List[RevCommit] =
       i.hasNext match {
@@ -538,7 +543,7 @@
         } else {
           commits(1)
         }
-        (getDiffs(git, oldCommit.getName, id, fetchContent), Some(oldCommit.getName))
+        (getDiffs(git, oldCommit.getName, id, fetchContent, false), Some(oldCommit.getName))
 
       } else {
         // initial commit
@@ -551,7 +556,7 @@
             buffer.append((if(!fetchContent){
               DiffInfo(
                 changeType  = ChangeType.ADD,
-                oldPath     = null,
+                oldPath     = "",
                 newPath     = treeWalk.getPathString,
                 oldContent  = None,
                 newContent  = None,
@@ -561,12 +566,13 @@
                 newObjectId = Option(treeWalk.getObjectId(0)).map(_.name),
                 oldMode     = treeWalk.getFileMode(0).toString,
                 newMode     = treeWalk.getFileMode(0).toString,
-                tooLarge    = false
+                tooLarge    = false,
+                patch       = None
               )
             } else {
               DiffInfo(
                 changeType  = ChangeType.ADD,
-                oldPath     = null,
+                oldPath     = "",
                 newPath     = treeWalk.getPathString,
                 oldContent  = None,
                 newContent  = JGitUtil.getContentFromId(git, treeWalk.getObjectId(0), false).filter(FileUtil.isText).map(convertFromByteArray),
@@ -576,7 +582,8 @@
                 newObjectId = Option(treeWalk.getObjectId(0)).map(_.name),
                 oldMode     = treeWalk.getFileMode(0).toString,
                 newMode     = treeWalk.getFileMode(0).toString,
-                tooLarge    = false
+                tooLarge    = false,
+                patch       = None
               )
             }))
           }
@@ -586,7 +593,7 @@
     }
   }
 
-  def getDiffs(git: Git, from: String, to: String, fetchContent: Boolean): List[DiffInfo] = {
+  def getDiffs(git: Git, from: String, to: String, fetchContent: Boolean, makePatch: Boolean): List[DiffInfo] = {
     val reader = git.getRepository.newObjectReader
     val oldTreeIter = new CanonicalTreeParser
     oldTreeIter.reset(reader, git.getRepository.resolve(from + "^{tree}"))
@@ -612,7 +619,8 @@
           newObjectId = Option(diff.getNewId).map(_.name),
           oldMode     = diff.getOldMode.toString,
           newMode     = diff.getNewMode.toString,
-          tooLarge    = true
+          tooLarge    = true,
+          patch       = None
         )
       } else {
         val oldIsImage = FileUtil.isImage(diff.getOldPath)
@@ -630,7 +638,8 @@
             newObjectId = Option(diff.getNewId).map(_.name),
             oldMode     = diff.getOldMode.toString,
             newMode     = diff.getNewMode.toString,
-            tooLarge    = false
+            tooLarge    = false,
+            patch       = (if(makePatch) Some(makePatchFromDiffEntry(git, diff)) else None)
           )
         } else {
           DiffInfo(
@@ -645,13 +654,23 @@
             newObjectId = Option(diff.getNewId).map(_.name),
             oldMode     = diff.getOldMode.toString,
             newMode     = diff.getNewMode.toString,
-            tooLarge    = false
+            tooLarge    = false,
+            patch       = (if(makePatch) Some(makePatchFromDiffEntry(git, diff)) else None)
           )
         }
       }
     }.toList
   }
 
+  private def makePatchFromDiffEntry(git: Git, diff: DiffEntry): String = {
+    val out = new ByteArrayOutputStream()
+    using(new DiffFormatter(out)){ formatter =>
+      formatter.setRepository(git.getRepository)
+      formatter.format(diff)
+      val patch = new String(out.toByteArray)
+      patch.split("\n").drop(4).mkString("\n")
+    }
+  }
 
   /**
    * Returns the list of branch names of the specified commit.