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feat(integrations): add LangChain integration — retriever, vectorstor… (#1155)

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* feat(integrations): add LangChain integration — retriever, vectorstore, tools

Co-authored-by: Cursor <cursoragent@cursor.com>

* fix(langchain): address Qodo review on HybridSearch hits and tools

Read nested HybridSearch metadata so retriever/vectorstore Documents
are not empty, make the agent tools real BaseTool subclasses, and
stop slicing tool JSON into invalid payloads.

Co-authored-by: Cursor <cursoragent@cursor.com>

---------

Co-authored-by: Cursor <cursoragent@cursor.com>
This commit is contained in:
Derek Tapley
2026-08-26 18:29:22 +05:00
committed by GitHub
co-authored by Cursor
parent 8a990c8bf5
commit f0aa581318
14 changed files with 1469 additions and 14 deletions
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README.md
+8 -12
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@@ -87,7 +87,7 @@ Semantica sits underneath your LLM, vector store, and agent framework as a deter
- **Graph Analytics:** Centrality, community detection, link prediction, and shortest-path queries over the graph you just built
- **Polyglot Graph Storage:** Native RDF (embedded Oxigraph, Blazegraph, Apache Jena, Eclipse RDF4J via SPARQL) and Labeled Property Graphs (Neo4j, FalkorDB, Apache AGE, AWS Neptune via Cypher), plus vector stores, all swappable without touching your code
- **Visualization:** Explore any graph, ontology, or timeline in an interactive browser workbench
- **Drop-in Integrations:** Native Agno and CrewAI support, a full-featured MCP server, a comprehensive CLI, a REST API, and plugins across major editors
- **Drop-in Integrations:** Native Agno, CrewAI, and LangChain support, a full-featured MCP server, a comprehensive CLI, a REST API, and plugins across major editors
---
@@ -1188,7 +1188,7 @@ Start with `semantica`, verify with `doctor`, build a graph, and explore the com
## Integrations
Native plugin bundles for Claude Code, Cursor, Codex, Windsurf, Cline, Continue, VS Code, and OpenClaw; a full-featured MCP server for any MCP-compatible client; a comprehensive REST API; and first-class Agno and CrewAI support for agentic frameworks. Every major LLM provider is already supported via `semantica.llms` and LiteLLM: OpenAI, Anthropic, Gemini, Mistral, Llama, Groq, Cohere, Azure, Bedrock, Ollama, DeepSeek, HuggingFace, and more.
Native plugin bundles for Claude Code, Cursor, Codex, Windsurf, Cline, Continue, VS Code, and OpenClaw; a full-featured MCP server for any MCP-compatible client; a comprehensive REST API; and first-class Agno, CrewAI, and LangChain support for agentic frameworks. Every major LLM provider is already supported via `semantica.llms` and LiteLLM: OpenAI, Anthropic, Gemini, Mistral, Llama, Groq, Cohere, Azure, Bedrock, Ollama, DeepSeek, HuggingFace, and more.
MCP setup takes 30 seconds — see [MCP Server](#mcp-server) below.
@@ -1307,17 +1307,17 @@ MCP setup takes 30 seconds — see [MCP Server](#mcp-server) below.
<strong>CrewAI</strong><br/>
<sub>First-class · <code>pip install semantica[crewai]</code></sub>
</td>
<td align="center" width="12.5%">
<a href="https://github.com/langchain-ai/langchain"><img src="https://github.com/langchain-ai.png?size=120" alt="LangChain" width="48" height="48" /></a><br/>
<strong>LangChain</strong><br/>
<sub>First-class · <code>pip install semantica[langchain]</code></sub>
</td>
</tr>
<tr>
<th colspan="8" align="left">Already Supported via REST API &amp; MCP</th>
</tr>
<tr>
<td align="center" width="12.5%">
<a href="https://github.com/langchain-ai/langchain"><img src="https://github.com/langchain-ai.png?size=120" alt="LangChain" width="48" height="48" /></a><br/>
<strong>LangChain</strong><br/>
<sub>REST API · MCP</sub>
</td>
<td align="center" width="12.5%">
<a href="https://github.com/langchain-ai/langgraph"><img src="https://github.com/langchain-ai.png?size=120" alt="LangGraph" width="48" height="48" /></a><br/>
<strong>LangGraph</strong><br/>
<sub>REST API · MCP</sub>
@@ -1348,11 +1348,6 @@ MCP setup takes 30 seconds — see [MCP Server](#mcp-server) below.
</tr>
<tr>
<td align="center" width="12.5%">
<a href="https://github.com/langchain-ai/langchain"><img src="https://github.com/langchain-ai.png?size=120" alt="LangChain" width="48" height="48" /></a><br/>
<strong>LangChain</strong><br/>
<sub>Dedicated toolkit</sub>
</td>
<td align="center" width="12.5%">
<a href="https://github.com/run-llama/llama_index"><img src="https://github.com/run-llama.png?size=120" alt="LlamaIndex" width="48" height="48" /></a><br/>
<strong>LlamaIndex</strong><br/>
<sub>Dedicated toolkit</sub>
@@ -1511,6 +1506,7 @@ pip install semantica[all] # everything
```bash
pip install semantica[agno] # Agno multi-agent integration
pip install semantica[crewai] # CrewAI integration
pip install semantica[langchain] # LangChain / LangGraph integration
pip install semantica[llm-litellm] # OpenAI, Anthropic, Gemini, Mistral, Llama, Groq, Cohere, Bedrock, Ollama, DeepSeek, and more
pip install semantica[graph-neo4j] # Neo4j graph store (LPG)
pip install semantica[graph-falkordb] # FalkorDB graph store (LPG)