diff --git a/python/mscclpp/__main__.py b/python/mscclpp/__main__.py
index 6a6f5f28..cab500ce 100644
--- a/python/mscclpp/__main__.py
+++ b/python/mscclpp/__main__.py
@@ -53,6 +53,26 @@ default_algo_configs = [
         ),
         "additional_kwargs": {"thread_block_group_size": 4},
     },
+    {
+        "filename": "allgather_mrc.json",
+        "function": def_algo.allgather_mrc,
+        "spec": AlgoSpec(
+            name="allgather_mrc",
+            collective=AllGather(2, 1, True),
+            nranks_per_node=1,
+            world_size=2,
+            in_place=True,
+            instances=1,
+            protocol="Simple",
+            auto_sync=True,
+            num_threads_per_block=1024,
+            reuse_resources=False,
+            use_double_scratch_buffer=False,
+            min_message_size=1 << 10,
+            max_message_size=8 << 30,
+            tags={"default": 1},
+        )
+    }
 ]
 
 
diff --git a/python/mscclpp/default_algos/__init__.py b/python/mscclpp/default_algos/__init__.py
index a5cfa882..10cf339e 100644
--- a/python/mscclpp/default_algos/__init__.py
+++ b/python/mscclpp/default_algos/__init__.py
@@ -2,5 +2,6 @@
 # Licensed under the MIT License.
 
 from mscclpp.default_algos.allreduce_2nodes import allreduce_2nodes
+from mscclpp.default_algos.allgather_mrc import allgather_mrc
 
-__all__ = ["allreduce_2nodes"]
+__all__ = ["allreduce_2nodes", "allgather_mrc"]
diff --git a/python/mscclpp/language/tests/multi_node/allgather_mrc.py b/python/mscclpp/default_algos/allgather_mrc.py
similarity index 64%
rename from python/mscclpp/language/tests/multi_node/allgather_mrc.py
rename to python/mscclpp/default_algos/allgather_mrc.py
index 88d4527d..1950f105 100644
--- a/python/mscclpp/language/tests/multi_node/allgather_mrc.py
+++ b/python/mscclpp/default_algos/allgather_mrc.py
@@ -8,23 +8,13 @@ from mscclpp.language.general import *
 from mscclpp.language.program import *
 from mscclpp.language.collectives import *
 from mscclpp.language.loop import LoopIterationContext
+from mscclpp.language.utils import AlgoSpec
 
 
-def allgather_hierarchical(name, gpus, num_threads_per_block, min_message_size, max_message_size):
-    size = gpus
-    chunksperloop = 1
-    collective = AllGather(size, chunksperloop, True)
-    with CollectiveProgram(
-        name,
-        collective,
-        size,
-        protocol="Simple",
-        num_threads_per_block=num_threads_per_block,
-        instances=1,
-        use_double_scratch_buffer=False,
-        min_message_size=min_message_size,
-        max_message_size=max_message_size,
-    ):
+def allgather_mrc(spec: AlgoSpec) -> CollectiveProgram:
+   size = spec.world_size
+   
+   with CollectiveProgram.from_spec(spec) as prog:
         # Port channels for inter-node communication
         port_channels = {}
         for n in range(size):
@@ -65,18 +55,4 @@ def allgather_hierarchical(name, gpus, num_threads_per_block, min_message_size,
                 recv_src_chunk = Rank(src_rank).get_output_buffer()[recv_offset:recv_offset + 1]
                 ch_from_prev.wait(tb=0)
 
-        print(JSON())
-
-
-parser = argparse.ArgumentParser()
-parser.add_argument("--name", type=str, help="name of the program")
-parser.add_argument("--num_gpus", type=int, help="number of gpus")
-parser.add_argument("--num_threads_per_block", type=int, default=1024, help="number of threads per block")
-parser.add_argument("--min_message_size", type=int, default=0, help="minimum message size")
-parser.add_argument("--max_message_size", type=int, default=2**64 - 1, help="maximum message size")
-
-args = parser.parse_args()
-
-allgather_hierarchical(
-    args.name, args.num_gpus, args.num_threads_per_block, args.min_message_size, args.max_message_size
-)
+        return prog
diff --git a/src/ext/collectives/algorithm_collection_builder.cc b/src/ext/collectives/algorithm_collection_builder.cc
index 2a7e6e91..1ea4adb0 100644
--- a/src/ext/collectives/algorithm_collection_builder.cc
+++ b/src/ext/collectives/algorithm_collection_builder.cc
@@ -113,7 +113,8 @@ AlgorithmCollection AlgorithmCollectionBuilder::buildDefaultDslAlgorithms(int ra
   };
   static const std::vector<DslAlgoConfig> defaultAlgoConfigs = {
       {"allreduce_2nodes_1K_64K.json", "allreduce", 8, 16, {{"default", 1}}},
-      {"allreduce_2nodes_64K_2M.json", "allreduce", 8, 16, {{"default", 1}}}};
+      {"allreduce_2nodes_64K_2M.json", "allreduce", 8, 16, {{"default", 1}}},
+      {"allgather_mrc.json", "allgather", 1, 2, {{"default", 1}}}};
   AlgorithmCollection collection;
 
   static auto generateFileId = [](const std::string& input) {