diff --git a/.github/scripts/check_diff.py b/.github/scripts/check_diff.py
index 17f08fe0bbf56..068c75ef01782 100644
--- a/.github/scripts/check_diff.py
+++ b/.github/scripts/check_diff.py
@@ -300,6 +300,8 @@ def _get_configs_for_multi_dirs(
             ] != ["README.md"]:
                 dirs_to_run["test"].add(f"libs/partners/{partner_dir}")
             # Skip if the directory was deleted or is just a tombstone readme
+        elif file == "libs/packages.yml":
+            continue
         elif file.startswith("libs/"):
             raise ValueError(
                 f"Unknown lib: {file}. check_diff.py likely needs "
diff --git a/.github/scripts/prep_api_docs_build.py b/.github/scripts/prep_api_docs_build.py
new file mode 100644
index 0000000000000..b48a6343f6fd4
--- /dev/null
+++ b/.github/scripts/prep_api_docs_build.py
@@ -0,0 +1,81 @@
+#!/usr/bin/env python
+"""Script to sync libraries from various repositories into the main langchain repository."""
+
+import os
+import shutil
+import yaml
+from pathlib import Path
+from typing import Dict, Any
+
+
+def load_packages_yaml() -> Dict[str, Any]:
+    """Load and parse the packages.yml file."""
+    with open("langchain/libs/packages.yml", "r") as f:
+        return yaml.safe_load(f)
+
+
+def clean_target_directories(packages: Dict[str, Any]) -> None:
+    """Remove old directories that will be replaced."""
+    base_path = Path("langchain/libs/partners")
+    for package in packages["packages"]:
+        if package["repo"] != "langchain-ai/langchain":
+            package_name = package["name"].replace("langchain-", "")
+            target_dir = base_path / package_name
+            if target_dir.exists():
+                print(f"Removing {target_dir}")
+                shutil.rmtree(target_dir)
+
+
+def move_libraries(packages: Dict[str, Any]) -> None:
+    """Move libraries from their source locations to the target directories."""
+    for package in packages["packages"]:
+        # Skip if it's the main langchain repo or disabled
+        if package["repo"] == "langchain-ai/langchain" or package.get(
+            "disabled", False
+        ):
+            continue
+
+        repo_name = package["repo"].split("/")[1]
+        package_name = package["name"].replace("langchain-", "")
+        source_path = package["path"]
+        target_dir = f"langchain/libs/partners/{package_name}"
+
+        # Handle root path case
+        if source_path == ".":
+            source_dir = repo_name
+        else:
+            source_dir = f"{repo_name}/{source_path}"
+
+        print(f"Moving {source_dir} to {target_dir}")
+
+        # Ensure target directory exists
+        os.makedirs(os.path.dirname(target_dir), exist_ok=True)
+
+        try:
+            # Move the directory
+            shutil.move(source_dir, target_dir)
+        except Exception as e:
+            print(f"Error moving {source_dir} to {target_dir}: {e}")
+
+
+def main():
+    """Main function to orchestrate the library sync process."""
+    try:
+        # Load packages configuration
+        packages = load_packages_yaml()
+
+        # Clean target directories
+        clean_target_directories(packages)
+
+        # Move libraries to their new locations
+        move_libraries(packages)
+
+        print("Library sync completed successfully!")
+
+    except Exception as e:
+        print(f"Error during library sync: {e}")
+        raise
+
+
+if __name__ == "__main__":
+    main()
diff --git a/.github/workflows/api_doc_build.yml b/.github/workflows/api_doc_build.yml
index 442a5ab18ed80..0825400669db1 100644
--- a/.github/workflows/api_doc_build.yml
+++ b/.github/workflows/api_doc_build.yml
@@ -22,133 +22,27 @@ jobs:
           repository: langchain-ai/langchain-api-docs-html
           path: langchain-api-docs-html
           token: ${{ secrets.TOKEN_GITHUB_API_DOCS_HTML }}
-      - uses: actions/checkout@v4
-        with:
-          repository: langchain-ai/langchain-google
-          path: langchain-google
-      - uses: actions/checkout@v4
-        with:
-          repository: langchain-ai/langchain-datastax
-          path: langchain-datastax
-      - uses: actions/checkout@v4
-        with:
-          repository: langchain-ai/langchain-nvidia
-          path: langchain-nvidia
-      - uses: actions/checkout@v4
-        with:
-          repository: langchain-ai/langchain-cohere
-          path: langchain-cohere
-      - uses: actions/checkout@v4
-        with:
-          repository: langchain-ai/langchain-elastic
-          path: langchain-elastic
-      - uses: actions/checkout@v4
-        with:
-          repository: langchain-ai/langchain-postgres
-          path: langchain-postgres
-      - uses: actions/checkout@v4
-        with:
-          repository: langchain-ai/langchain-aws
-          path: langchain-aws
-      - uses: actions/checkout@v4
-        with:
-          repository: langchain-ai/langchain-weaviate
-          path: langchain-weaviate
-      - uses: actions/checkout@v4
-        with:
-          repository: langchain-ai/langchain-ai21
-          path: langchain-ai21
-      - uses: actions/checkout@v4
-        with:
-          repository: langchain-ai/langchain-together
-          path: langchain-together
-      - uses: actions/checkout@v4
-        with:
-          repository: langchain-ai/langchain-experimental
-          path: langchain-experimental
-      - uses: actions/checkout@v4
-        with:
-          repository: langchain-ai/langchain-milvus
-          path: langchain-milvus
-      - uses: actions/checkout@v4
-        with:
-          repository: langchain-ai/langchain-unstructured
-          path: langchain-unstructured
-      - uses: actions/checkout@v4
-        with:
-          repository: langchain-ai/langchain-databricks
-          path: langchain-databricks
-      - uses: actions/checkout@v4
-        with:
-          repository: langchain-ai/langchain-ibm
-          path: langchain-ibm
-      - uses: actions/checkout@v4
-        with:
-          repository: langchain-ai/langchain-azure
-          path: langchain-azure
-      - uses: actions/checkout@v4
-        with:
-          repository: langchain-ai/langchain-mongodb
-          path: langchain-mongodb
-      - uses: actions/checkout@v4
-        with:
-          repository: langchain-ai/langchain-redis
-          path: langchain-redis
-
 
+      - name: Install yq
+        run: |
+          sudo wget -qO /usr/local/bin/yq https://github.com/mikefarah/yq/releases/latest/download/yq_linux_amd64
+          sudo chmod a+x /usr/local/bin/yq
 
-      - name: Set Git config
-        working-directory: langchain
+      - name: Parse YAML and checkout repos
         run: |
-          git config --local user.email "actions@github.com"
-          git config --local user.name "Github Actions"
+          # Get unique repositories
+          REPOS=$(yq '.packages[].repo' langchain/libs/packages.yml | sort -u)
           
-      - name: Move libs
-        run: |
-          rm -rf \
-            langchain/libs/partners/google-genai \
-            langchain/libs/partners/google-vertexai \
-            langchain/libs/partners/astradb \
-            langchain/libs/partners/nvidia-trt \
-            langchain/libs/partners/nvidia-ai-endpoints \
-            langchain/libs/partners/cohere \
-            langchain/libs/partners/elasticsearch \
-            langchain/libs/partners/upstage \
-            langchain/libs/partners/ai21 \
-            langchain/libs/partners/together \
-            langchain/libs/standard-tests \
-            langchain/libs/experimental \
-            langchain/libs/partners/milvus \
-            langchain/libs/partners/unstructured \
-            langchain/libs/partners/databricks \
-            langchain/libs/partners/ibm \
-            langchain/libs/partners/azure-dynamic-sessions \
-            langchain/libs/partners/mongodb \
-            langchain/libs/partners/redis
-          mv langchain-google/libs/genai langchain/libs/partners/google-genai
-          mv langchain-google/libs/vertexai langchain/libs/partners/google-vertexai
-          mv langchain-google/libs/community langchain/libs/partners/google-community
-          mv langchain-datastax/libs/astradb langchain/libs/partners/astradb
-          mv langchain-nvidia/libs/ai-endpoints langchain/libs/partners/nvidia-ai-endpoints
-          mv langchain-cohere/libs/cohere langchain/libs/partners/cohere
-          mv langchain-elastic/libs/elasticsearch langchain/libs/partners/elasticsearch
-          mv langchain-postgres langchain/libs/partners/postgres
-          mv langchain-aws/libs/aws langchain/libs/partners/aws
-          mv langchain-weaviate/libs/weaviate langchain/libs/partners/weaviate
-          mv langchain-ai21/libs/ai21 langchain/libs/partners/ai21
-          mv langchain-together/libs/together langchain/libs/partners/together
-          mv langchain-experimental/libs/experimental langchain/libs/experimental
-          mv langchain-milvus/libs/milvus langchain/libs/partners/milvus
-          mv langchain-unstructured/libs/unstructured langchain/libs/partners/unstructured
-          mv langchain-databricks/libs/databricks langchain/libs/partners/databricks
-          mv langchain-ibm/libs/ibm langchain/libs/partners/ibm
-          mv langchain-azure/libs/azure-dynamic-sessions langchain/libs/partners/azure-dynamic-sessions
-          mv langchain-mongodb/libs/mongodb langchain/libs/partners/mongodb
-          mv langchain-redis/libs/redis langchain/libs/partners/redis
-
-      - name: Rm old html
-        run:
-          rm -rf langchain-api-docs-html/api_reference_build/html
+          # Checkout each unique repository
+          for repo in $REPOS; do
+            if [ "$repo" != "langchain-ai/langchain" ]; then
+              REPO_NAME=$(echo $repo | cut -d'/' -f2)
+              echo "Checking out $repo to $REPO_NAME"
+              git clone --depth 1 https://github.com/$repo.git $REPO_NAME
+            fi
+          done
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Set up Python ${{ env.PYTHON_VERSION }} + Poetry ${{ env.POETRY_VERSION }}
         uses: "./langchain/.github/actions/poetry_setup"
@@ -158,16 +52,36 @@ jobs:
           cache-key: api-docs
           working-directory: langchain
 
-      - name: Install dependencies
+      - name: Install initial py deps
         working-directory: langchain
         run: |
           python -m pip install -U uv
-          python -m uv pip install --upgrade --no-cache-dir pip setuptools
+          python -m uv pip install --upgrade --no-cache-dir pip setuptools pyyaml
+          
+      - name: Move libs with script
+        run: python langchain/.github/scripts/prep_api_docs_build.py
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Rm old html
+        run:
+          rm -rf langchain-api-docs-html/api_reference_build/html
+
+      - name: Install dependencies
+        working-directory: langchain
+        run: |
+          
           # skip airbyte due to pandas dependency issue
           python -m uv pip install $(ls ./libs/partners | grep -vE "airbyte" | xargs -I {} echo "./libs/partners/{}")
           python -m uv pip install libs/core libs/langchain libs/text-splitters libs/community libs/experimental
           python -m uv pip install -r docs/api_reference/requirements.txt
 
+      - name: Set Git config
+        working-directory: langchain
+        run: |
+          git config --local user.email "actions@github.com"
+          git config --local user.name "Github Actions"
+
       - name: Build docs
         working-directory: langchain
         run: |
@@ -182,4 +96,4 @@ jobs:
       - uses: EndBug/add-and-commit@v9
         with:
           cwd: langchain-api-docs-html
-          message: 'Update API docs build'
\ No newline at end of file
+          message: 'Update API docs build'
diff --git a/libs/packages.yml b/libs/packages.yml
new file mode 100644
index 0000000000000..994bb3a718637
--- /dev/null
+++ b/libs/packages.yml
@@ -0,0 +1,149 @@
+# this file is used to define the packages that are used in the project
+# it is EXPERIMENTAL and may be removed in the future
+
+packages:
+  - name: langchain-core
+    repo: langchain-ai/langchain
+    path: libs/core
+  - name: langchain-text-splitters
+    repo: langchain-ai/langchain
+    path: libs/text-splitters
+  - name: langchain
+    repo: langchain-ai/langchain
+    path: libs/langchain
+  - name: langchain-community
+    repo: langchain-ai/langchain
+    path: libs/community
+  - name: langchain-experimental
+    repo: langchain-ai/langchain-experimental
+    path: libs/experimental
+  - name: langchain-cli
+    repo: langchain-ai/langchain
+    path: libs/cli
+  - name: langchain-ai21
+    repo: langchain-ai/langchain-ai21
+    path: libs/ai21
+  - name: langchain-airbyte
+    repo: langchain-ai/langchain
+    path: libs/partners/airbyte
+    disabled: true # dependency issues / stale
+  - name: langchain-anthropic
+    repo: langchain-ai/langchain
+    path: libs/partners/anthropic
+  - name: langchain-chroma
+    repo: langchain-ai/langchain
+    path: libs/partners/chroma
+  - name: langchain-exa
+    repo: langchain-ai/langchain
+    path: libs/partners/exa
+  - name: langchain-fireworks
+    repo: langchain-ai/langchain
+    path: libs/partners/fireworks
+  - name: langchain-groq
+    repo: langchain-ai/langchain
+    path: libs/partners/groq
+  - name: langchain-huggingface
+    repo: langchain-ai/langchain
+    path: libs/partners/huggingface
+  - name: langchain-ibm
+    repo: langchain-ai/langchain
+    path: libs/partners/ibm
+  - name: langchain-milvus
+    repo: langchain-ai/langchain-milvus
+    path: libs/milvus
+  - name: langchain-mistralai
+    repo: langchain-ai/langchain
+    path: libs/partners/mistralai
+  - name: langchain-mongodb
+    repo: langchain-ai/langchain-mongodb
+    path: libs/mongodb
+  - name: langchain-nomic
+    repo: langchain-ai/langchain
+    path: libs/partners/nomic
+  - name: langchain-openai
+    repo: langchain-ai/langchain
+    path: libs/partners/openai
+  - name: langchain-pinecone
+    repo: langchain-ai/langchain
+    path: libs/partners/pinecone
+  - name: langchain-prompty
+    repo: langchain-ai/langchain
+    path: libs/partners/prompty
+  - name: langchain-qdrant
+    repo: langchain-ai/langchain
+    path: libs/partners/qdrant
+  - name: langchain-sema4
+    repo: langchain-ai/langchain-sema4
+    path: libs/sema4
+  - name: langchain-together
+    repo: langchain-ai/langchain-together
+    path: libs/together
+  - name: langchain-upstage
+    repo: langchain-ai/langchain-upstage
+    path: libs/upstage
+  - name: langchain-voyageai
+    repo: langchain-ai/langchain
+    path: libs/partners/voyageai
+  - name: langchain-aws
+    repo: langchain-ai/langchain-aws
+    path: libs/aws
+  - name: langchain-astradb
+    repo: langchain-ai/langchain-datastax
+    path: libs/astradb
+  - name: langchain-google-genai
+    repo: langchain-ai/langchain-google
+    path: libs/genai
+  - name: langchain-google-vertexai
+    repo: langchain-ai/langchain-google
+    path: libs/vertexai
+  - name: langchain-google-community
+    repo: langchain-ai/langchain-google
+    path: libs/community
+  - name: langchain-weaviate
+    repo: langchain-ai/langchain-weaviate
+    path: libs/weaviate
+  - name: langchain-cohere
+    repo: langchain-ai/langchain-cohere
+    path: libs/cohere
+  - name: langchain-elasticsearch
+    repo: langchain-ai/langchain-elastic
+    path: libs/elasticsearch
+  - name: langchain-nvidia-ai-endpoints
+    repo: langchain-ai/langchain-nvidia
+    path: libs/ai-endpoints
+  - name: langchain-postgres
+    repo: langchain-ai/langchain-postgres
+    path: .
+  - name: langchain-redis
+    repo: langchain-ai/langchain-redis
+    path: libs/redis
+  - name: langchain-unstructured
+    repo: langchain-ai/langchain-unstructured
+    path: libs/unstructured
+  - name: langchain-azure-dynamic-sessions
+    repo: langchain-ai/langchain-azure
+    path: libs/azure-dynamic-sessions
+  - name: langchain-sqlserver
+    repo: langchain-ai/langchain-azure
+    path: libs/sqlserver
+  - name: langchain-cerebras
+    repo: langchain-ai/langchain-cerebras
+    path: libs/cerebras
+  - name: langchain-snowflake
+    repo: langchain-ai/langchain-snowflake
+    path: libs/snowflake
+  - name: langchain-databricks
+    repo: langchain-ai/langchain-databricks
+    path: libs/databricks
+  - name: langchain-ibm
+    repo: langchain-ai/langchain-ibm
+    path: libs/ibm
+  - name: langchain-couchbase
+    repo: langchain-ai/langchain
+    path: libs/partners/couchbase
+  - name: langchain-ollama
+    repo: langchain-ai/langchain
+    path: libs/partners/ollama
+  - name: langchain-box
+    repo: langchain-ai/langchain
+    path: libs/partners/box