---
title: "Tanisha Soni (@tanisha-soni) | Hashnode"
description: "AI/Backend Engineer building agentic systems with LangChain & MCP. Read the latest articles by Tanisha Soni on Hashnode."
url: "https://hashnode.com/@tanisha-soni"
---

@tanisha-soni

# Tanisha Soni

@tanisha-soni · Mumbai, India · Joined July 2026

AI/Backend Engineer building agentic systems with LangChain & MCP

### [I Taught My Local Model to Speak LangChain](https://tanisha-soni.hashnode.dev/custom-langchain-chat-model-local-llm?utm_source=hashnode&utm_medium=feed)

How to extend BaseChatModel, implement tool calling, parse JSON responses, and run self hosted GGUF model with LangChain no other API required.

9 min read · [tanisha-soni.hashnode.dev](https://tanisha-soni.hashnode.dev/custom-langchain-chat-model-local-llm?utm_source=hashnode&utm_medium=feed)

[Jul 5](https://hashnode.com/posts/custom-langchain-chat-model-local-llm/6a4a28818251985fc678d4c8)

### [Your LLM Doesn't Need to See the Token Either](https://tanisha-soni.hashnode.dev/mcp-tool-call-interceptors?utm_source=hashnode&utm_medium=feed)

Learn how MCP tool interceptors let you inject auth tokens, session IDs, metadata into tool calls without exposing them to your LLM or tool schemas.

4 min read · [tanisha-soni.hashnode.dev](https://tanisha-soni.hashnode.dev/mcp-tool-call-interceptors?utm_source=hashnode&utm_medium=feed)

[Jul 4](https://hashnode.com/posts/mcp-tool-call-interceptors/6a492fdad36b2f4f9f6bdeae)

### [Your LLM Doesn't Need to Know About All 47 Tools](https://tanisha-soni.hashnode.dev/faiss-tool-retrieval-for-mcp?utm_source=hashnode&utm_medium=feed)

From 40 tools to 6, without touching a single LLM call

7 min read · [tanisha-soni.hashnode.dev](https://tanisha-soni.hashnode.dev/faiss-tool-retrieval-for-mcp?utm_source=hashnode&utm_medium=feed)

[Jul 3](https://hashnode.com/posts/faiss-tool-retrieval-for-mcp/6a47ec4e2e737d4ddaec4d29)