diff --git a/core/coreapi/dag.go b/core/coreapi/dag.go
index e2bd144ff..7462c103a 100644
--- a/core/coreapi/dag.go
+++ b/core/coreapi/dag.go
@@ -67,10 +67,14 @@ func (api *DagAPI) Tree(ctx context.Context, p coreiface.Path, opts ...caopts.Da
 	return out, nil
 }
 
+// Batch creates new DagBatch
 func (api *DagAPI) Batch(ctx context.Context) coreiface.DagBatch {
 	return &dagBatch{api: api}
 }
 
+// Put inserts data using specified format and input encoding. Unless used with
+// `WithCodes` or `WithHash`, the defaults "dag-cbor" and "sha256" are used.
+// Returns the path of the inserted data.
 func (b *dagBatch) Put(ctx context.Context, src io.Reader, opts ...caopts.DagPutOption) (coreiface.ResolvedPath, error) {
 	nd, err := getNode(src, opts...)
 	if err != nil {
@@ -84,6 +88,7 @@ func (b *dagBatch) Put(ctx context.Context, src io.Reader, opts ...caopts.DagPut
 	return coreiface.IpldPath(nd.Cid()), nil
 }
 
+// Commit commits nodes to the datastore and announces them to the network
 func (b *dagBatch) Commit(ctx context.Context) error {
 	b.lk.Lock()
 	defer b.lk.Unlock()
diff --git a/core/coreapi/dag_test.go b/core/coreapi/dag_test.go
index e75699f69..16247e1f0 100644
--- a/core/coreapi/dag_test.go
+++ b/core/coreapi/dag_test.go
@@ -136,7 +136,7 @@ func TestBatch(t *testing.T) {
 	}
 
 	_, err = api.Dag().Get(ctx, c)
-	if err == nil || err.Error() != "merkledag: not found"{
+	if err == nil || err.Error() != "merkledag: not found" {
 		t.Error(err)
 	}
 
diff --git a/core/coreapi/interface/dag.go b/core/coreapi/interface/dag.go
index a128e97c5..01d6112e7 100644
--- a/core/coreapi/interface/dag.go
+++ b/core/coreapi/interface/dag.go
@@ -22,6 +22,7 @@ type DagOps interface {
 type DagBatch interface {
 	DagOps
 
+	// Commit commits nodes to the datastore and announces them to the network
 	Commit(ctx context.Context) error
 }
 
@@ -35,5 +36,6 @@ type DagAPI interface {
 	// Tree returns list of paths within a node specified by the path.
 	Tree(ctx context.Context, path Path, opts ...options.DagTreeOption) ([]Path, error)
 
+	// Batch creates new DagBatch
 	Batch(ctx context.Context) DagBatch
 }