diff --git a/core/lib.rs b/core/lib.rs
index b49de3b7b1..9b4ba230b7 100644
--- a/core/lib.rs
+++ b/core/lib.rs
@@ -9,6 +9,7 @@ mod module_specifier;
 mod modules;
 mod normalize_path;
 mod ops;
+mod ops_builtin;
 mod ops_json;
 pub mod plugin_api;
 mod resources;
@@ -52,8 +53,6 @@ pub use crate::modules::ModuleSourceFuture;
 pub use crate::modules::NoopModuleLoader;
 pub use crate::modules::RecursiveModuleLoad;
 pub use crate::normalize_path::normalize_path;
-pub use crate::ops::op_close;
-pub use crate::ops::op_resources;
 pub use crate::ops::serialize_op_result;
 pub use crate::ops::Op;
 pub use crate::ops::OpAsyncFuture;
@@ -64,6 +63,8 @@ pub use crate::ops::OpResponse;
 pub use crate::ops::OpState;
 pub use crate::ops::OpTable;
 pub use crate::ops::PromiseId;
+pub use crate::ops_builtin::op_close;
+pub use crate::ops_builtin::op_resources;
 pub use crate::ops_json::op_async;
 pub use crate::ops_json::op_sync;
 pub use crate::resources::Resource;
diff --git a/core/ops.rs b/core/ops.rs
index ab6938a17b..6faffba4ba 100644
--- a/core/ops.rs
+++ b/core/ops.rs
@@ -1,10 +1,8 @@
 // Copyright 2018-2021 the Deno authors. All rights reserved. MIT license.
 
-use crate::error::bad_resource_id;
 use crate::error::type_error;
 use crate::error::AnyError;
 use crate::gotham_state::GothamState;
-use crate::resources::ResourceId;
 use crate::resources::ResourceTable;
 use crate::runtime::GetErrorClassFn;
 use crate::ZeroCopyBuf;
@@ -195,41 +193,6 @@ impl Default for OpTable {
   }
 }
 
-/// Return map of resources with id as key
-/// and string representation as value.
-///
-/// This op must be wrapped in `op_sync`.
-pub fn op_resources(
-  state: &mut OpState,
-  _args: (),
-  _zero_copy: Option<ZeroCopyBuf>,
-) -> Result<Vec<(ResourceId, String)>, AnyError> {
-  let serialized_resources = state
-    .resource_table
-    .names()
-    .map(|(rid, name)| (rid, name.to_string()))
-    .collect();
-  Ok(serialized_resources)
-}
-
-/// Remove a resource from the resource table.
-///
-/// This op must be wrapped in `op_sync`.
-pub fn op_close(
-  state: &mut OpState,
-  rid: Option<ResourceId>,
-  _zero_copy: Option<ZeroCopyBuf>,
-) -> Result<(), AnyError> {
-  // TODO(@AaronO): drop Option after improving type-strictness balance in serde_v8
-  let rid = rid.ok_or_else(|| type_error("missing or invalid `rid`"))?;
-  state
-    .resource_table
-    .close(rid)
-    .ok_or_else(bad_resource_id)?;
-
-  Ok(())
-}
-
 #[cfg(test)]
 mod tests {
   use super::*;
diff --git a/core/ops_builtin.rs b/core/ops_builtin.rs
new file mode 100644
index 0000000000..5c74c73300
--- /dev/null
+++ b/core/ops_builtin.rs
@@ -0,0 +1,45 @@
+use crate::error::bad_resource_id;
+use crate::error::type_error;
+use crate::error::AnyError;
+use crate::resources::ResourceId;
+use crate::OpState;
+use crate::ZeroCopyBuf;
+
+// TODO(@AaronO): provide these ops grouped as a runtime extension
+// e.g:
+// pub fn init_builtins() -> Extension { ... }
+
+/// Return map of resources with id as key
+/// and string representation as value.
+///
+/// This op must be wrapped in `op_sync`.
+pub fn op_resources(
+  state: &mut OpState,
+  _args: (),
+  _zero_copy: Option<ZeroCopyBuf>,
+) -> Result<Vec<(ResourceId, String)>, AnyError> {
+  let serialized_resources = state
+    .resource_table
+    .names()
+    .map(|(rid, name)| (rid, name.to_string()))
+    .collect();
+  Ok(serialized_resources)
+}
+
+/// Remove a resource from the resource table.
+///
+/// This op must be wrapped in `op_sync`.
+pub fn op_close(
+  state: &mut OpState,
+  rid: Option<ResourceId>,
+  _zero_copy: Option<ZeroCopyBuf>,
+) -> Result<(), AnyError> {
+  // TODO(@AaronO): drop Option after improving type-strictness balance in serde_v8
+  let rid = rid.ok_or_else(|| type_error("missing or invalid `rid`"))?;
+  state
+    .resource_table
+    .close(rid)
+    .ok_or_else(bad_resource_id)?;
+
+  Ok(())
+}