--- title: "Partha (@rpsarathy) | Hashnode" description: "#AI #agents #langgraph, #mcp, #rag, #graphrag #llm #engineering-management. Read the latest articles by Partha on Hashnode." url: "https://hashnode.com/@rpsarathy" --- @rpsarathy # Partha @rpsarathy · Cranbury, New jersey · Joined July 2026 #AI #agents #langgraph, #mcp, #rag, #graphrag #llm #engineering-management ### [Sandboxes and Policies for AI Agents: A Practical Architecture for Your First Deployment](https://rpsarathy.hashnode.dev/sandboxes-and-policies-for-ai-agents-a-practical-architecture-for-your-first-deployment?utm_source=hashnode&utm_medium=feed) An agent reads a repository, edits a function, and runs the tests. Then it encounters a README instruction asking it to upload its environment variables for “debugging.” A prompt telling it not to rev 11 min read · [rpsarathy.hashnode.dev](https://rpsarathy.hashnode.dev/sandboxes-and-policies-for-ai-agents-a-practical-architecture-for-your-first-deployment?utm_source=hashnode&utm_medium=feed) [2](https://hashnode.com/posts/sandboxes-and-policies-for-ai-agents-a-practical-architecture-for-your-first-deployment/6ad95c401e69b4c7ea0385ac) [Oct 22](https://hashnode.com/posts/sandboxes-and-policies-for-ai-agents-a-practical-architecture-for-your-first-deployment/6ad95c401e69b4c7ea0385ac) ### [The RAG vs. OKF Debate Is a Category Error — and It's Hiding the Architecture You Actually Need](https://rpsarathy.hashnode.dev/the-rag-vs-okf-debate-is-a-category-error-and-it-s-hiding-the-architecture-you-actually-need?utm_source=hashnode&utm_medium=feed) Ever since Google Cloud published the Open Knowledge Format in June 2026, my feed has been full of "RAG vs. OKF" takes: which one wins, which one your agents should use, whether retrieval is dead. Aft 9 min read · [rpsarathy.hashnode.dev](https://rpsarathy.hashnode.dev/the-rag-vs-okf-debate-is-a-category-error-and-it-s-hiding-the-architecture-you-actually-need?utm_source=hashnode&utm_medium=feed) [Oct 14](https://hashnode.com/posts/the-rag-vs-okf-debate-is-a-category-error-and-it-s-hiding-the-architecture-you-actually-need/6acfb867e791fea7646ace44) ### [Jev Isn’t an LLM Replacement. It’s a Decision Plane for Agentic Software](https://rpsarathy.hashnode.dev/jev-isn-t-an-llm-replacement-it-s-a-decision-plane-for-agentic-software?utm_source=hashnode&utm_medium=feed) Jev Isn’t an LLM Replacement. It’s a Decision Plane for Agentic Software 12 min read · [rpsarathy.hashnode.dev](https://rpsarathy.hashnode.dev/jev-isn-t-an-llm-replacement-it-s-a-decision-plane-for-agentic-software?utm_source=hashnode&utm_medium=feed) [Oct 1](https://hashnode.com/posts/jev-isn-t-an-llm-replacement-it-s-a-decision-plane-for-agentic-software/6abe717f2286871089484953) ### [Why Your RAG Pipeline Needs a Reranker: Bi-Encoders vs. Cross-Encoders, and When It Matters](https://rpsarathy.hashnode.dev/why-your-rag-pipeline-needs-a-reranker-bi-encoders-vs-cross-encoders-and-when-it-matters?utm_source=hashnode&utm_medium=feed) Why Your RAG Pipeline Needs a Reranker: Bi-Encoders vs. Cross-Encoders, and When It Matters 7 min read · [rpsarathy.hashnode.dev](https://rpsarathy.hashnode.dev/why-your-rag-pipeline-needs-a-reranker-bi-encoders-vs-cross-encoders-and-when-it-matters?utm_source=hashnode&utm_medium=feed) [1](https://hashnode.com/posts/why-your-rag-pipeline-needs-a-reranker-bi-encoders-vs-cross-encoders-and-when-it-matters/6ab2b4d0836e3fa92222dd29) [Sep 22](https://hashnode.com/posts/why-your-rag-pipeline-needs-a-reranker-bi-encoders-vs-cross-encoders-and-when-it-matters/6ab2b4d0836e3fa92222dd29) ### [Graph Engineering: The Idea That Fixed AI Agents](https://rpsarathy.hashnode.dev/graph-engineering-the-idea-that-fixed-ai-agents?utm_source=hashnode&utm_medium=feed) Every few months, the AI world gives the same problem a new name. Prompt engineering. Context engineering. Loop engineering. This year it's graph engineering. I get the eye-roll. The renaming gets old 8 min read · [rpsarathy.hashnode.dev](https://rpsarathy.hashnode.dev/graph-engineering-the-idea-that-fixed-ai-agents?utm_source=hashnode&utm_medium=feed) [Sep 17](https://hashnode.com/posts/graph-engineering-the-idea-that-fixed-ai-agents/6aabd33baa5d5ec775fbadeb)