# Rajdeep Mondal > Rajdeep Mondal builds AI systems that can defend their answers. He owns Polly Lens at Elucidata. He writes about founder judgment, proof, and hard systems. Rajdeep Mondal builds AI systems that can defend their answers. Current work: Polly Lens at Elucidata, PMCGrab, Vaidya, and Claude Code, Under The Hood. Direction: founder judgment built through painful problems, trust, and proof. ## Operating standard - Fluency is not evidence. The system must show sources, cite what matters, and say when it does not know. - Founder judgment is trained through problem selection, product judgment, distribution, writing, and proof. This context was generated from 125 published essays. Latest archive update: 2026-08-14T12:00:00.000Z. ## Core pages - [Home](https://rajdeepmondal.com/): Canonical entry point and public profile. - [About](https://rajdeepmondal.com/about): Founder profile, current role, principles, and collaboration fit. - [Resume](https://rajdeepmondal.com/resume): Printable CV for hiring and collaboration scans. - [Projects](https://rajdeepmondal.com/projects): AI systems, open-source tools, and public code. - [Writing map](https://rajdeepmondal.com/writing): Guided paths into AI systems, course notes, field guides, books, letters, essays, and the complete archive. - [Claude Code, Under The Hood (series)](https://rajdeepmondal.com/series/claude-code-under-the-hood): A field guide to how systems like Claude Code and Codex work, told as one building argument in five acts: the anatomy of a single turn, what that turn costs, the disciplines of acting well, scaling past one agent, and the shape every coding agent converges on. - [Contact](https://rajdeepmondal.com/connect): Best route for specific collaborations and technical notes. ## Machine-readable indexes - [Sitemap](https://rajdeepmondal.com/sitemap.xml): Complete URL inventory for indexable pages. - [RSS feed](https://rajdeepmondal.com/feed.xml): Latest archive entries as RSS. - [Search index](https://rajdeepmondal.com/search.json): JSON index with title, summary, body excerpt, tags, date, and path. - [Full LLM context](https://rajdeepmondal.com/llms-full.txt): Expanded context with every published essay summary. ## Projects - [Multi-agent metadata curation](https://www.biorxiv.org/content/10.1101/2025.06.10.658658v1): A multi-agent system that reads GEO entries and their papers, then extracts, normalizes, and infers the metadata fields a dataset is missing. 93% recall across 23 fields Status: complete. Tags: Agents, Biomedical, Ontologies, Evaluation. - [PMCGrab](https://github.com/rajdeepmondaldotcom/pmcgrab): Extracts PubMed Central papers into structured JSON: sections, tables, figures, references. 98% accuracy across 7,500+ papers Status: active. Tags: Python, NLP, RAG, Data Processing. - [ACE AI](https://www.aceaiinterview.site/): AI engineering interview prep with a 2,049-question bank across 28 topics, built around study, quiz, review, and progress loops. 2,049 answers, ~650 users in three weeks Status: active. Tags: Product, Interview Prep, AI Systems, Spaced Repetition. - [Oncopacket](https://github.com/monarch-initiative/oncopacket): A Python package that converts cancer data into GA4GH phenopackets, so records from different studies can be read by the same tools. 23,650 phenopackets released Status: active. Tags: Python, Phenopackets, GA4GH, Open source. - [Vaidya](https://github.com/rajdeepmondaldotcom/vaidya): Voice-first navigator for Indian public health schemes. A caller asks in their own language and hears which coverage they can claim. 23 languages, near-zero false positives Status: active. Tags: Voice, Multilingual, Public Health, Agents. - [Caliper](https://github.com/rajdeepmondaldotcom/caliper): Local-first analytics for AI coding spend. It reads Codex CLI and Claude Code logs on disk, prices usage at API rates, and breaks cost down by project, PR, model, and session. $200 plan, ~$8.5K of work a month Status: active. Tags: Python, CLI, Cost Analytics, Local-first. - [WHOOP MCP Server](https://github.com/rajdeepmondaldotcom/whoop-mcp-server): Read-only MCP server that connects WHOOP records to Claude, ChatGPT, and other MCP clients so health and training questions are answered from computed data. 24 WHOOP tools plus prompts and resources Status: active. Tags: MCP, Health Data, Python, OAuth. ## Selected essays - [Dayara Bugyal: Twenty-One Kilometers, Sixteen Months Later](https://rajdeepmondal.com/writing/dayara-bugyal-return): Summary: A route you already walked is the only honest instrument you have on yourself. Same twenty-one kilometers, sixteen months later, and this time I ran the climb out of Raithal. Published 2026-02-01T12:00:00.000Z. 10 min read. Tags: trekking, travel, adventure, mountains, growth. - [Stack Money for the Wrong Reasons](https://rajdeepmondal.com/writing/stack-money-for-the-wrong-reasons): Summary: Motivation does not need to be clean to be reliable. Money is permission to refuse, and permission to make what happened to you irrelevant. Published 2026-01-25T00:00:00.000Z. 5 min read. Tags: letters, money, motivation, power, self-improvement, mindset. - [Let Your Calm Be the Threat](https://rajdeepmondal.com/writing/let-your-calm-be-the-threat): Summary: Every advantage at a table is built before the meeting: another option, a value you can state in plain words, and terms simple enough to enforce. Published 2026-01-20T00:00:00.000Z. 7 min read. Tags: letters, negotiation, business, mindset, self-improvement. - [Become Undefinable](https://rajdeepmondal.com/writing/become-undefinable): Summary: A category is a competition. A label puts ten thousand people in the line beside you, and a person standing where several real skills cross gets priced as the only option. Published 2026-01-19T00:00:00.000Z. 13 min read. Tags: letters, discipline, self-improvement, motivation, mindset, entrepreneurship. - [Keep Your Mind Fed](https://rajdeepmondal.com/writing/keep-your-mind-fed): Summary: Attention is the raw material every other habit runs on. If a week of inputs changed nothing about how you think, the diet was empty. Published 2025-12-17T00:00:00.000Z. 5 min read. Tags: letters, focus, self-improvement, mindfulness, learning. - [Clean Up Your Mind](https://rajdeepmondal.com/writing/clean-up-your-mind): Summary: A messy mind is a systems problem in five inputs. Clarity returns when you hold the goal steady and change one variable at a time. Published 2025-12-10T00:00:00.000Z. 5 min read. Tags: focus, self-improvement, productivity, mindfulness. - [Nothing You Do Not Earn Stays Free](https://rajdeepmondal.com/writing/nothing-you-dont-earn-stays-free): Summary: Help that replaces effort takes the muscle it was meant to protect. Attach a cap, a condition, a date, and a clean exit to what you give. Published 2025-11-03T00:00:00.000Z. 5 min read. Tags: letters, self-reliance, discipline, wisdom, giving. - [Earn Your Name in Private](https://rajdeepmondal.com/writing/earn-your-name-in-private): Summary: A name is worth what it produces for the people closest to the consequences. The measure is what your weeks contain when nobody is watching. Published 2025-10-28T00:00:00.000Z. 6 min read. Tags: letters, humility, service, character, self-improvement, leadership. - [Keep Your Heart, Trust Your Eyes](https://rajdeepmondal.com/writing/keep-your-heart-trust-your-eyes): Summary: Read people by the patterns that cost them something, and size your generosity so that being wrong about a person stays affordable. Published 2025-10-16T00:00:00.000Z. 5 min read. Tags: letters, trust, self-improvement, relationships, wisdom. - [The War Starts Before the Punch](https://rajdeepmondal.com/writing/the-war-starts-before-the-punch): Summary: Most fights are lost on the day you choose them. Name the one threat that can end you, refuse the rest, and price what you lose before you enter. Published 2025-10-10T00:00:00.000Z. 6 min read. Tags: letters, competition, strategy, discipline, mindset, leadership. - [Take the Risk While the Door Is Open](https://rajdeepmondal.com/writing/take-the-risk-while-the-door-is-open): Summary: The risks worth taking are the ones whose worst case fits on one page. Writing that page before you enter is what turns fear into a decision. Published 2025-10-04T00:00:00.000Z. 4 min read. Tags: letters, risk, action, opportunity, decision-making, growth. - [Think for Yourself](https://rajdeepmondal.com/writing/think-for-yourself): Summary: Normal inputs produce normal results. The way out is a worldview you assemble from many fields and test before you trust it. Published 2025-09-15T00:00:00.000Z. 10 min read. Tags: mental-models, critical-thinking, self-improvement, first-principles. ## Optional - [All writing](https://rajdeepmondal.com/writing): Browse guided writing paths and the complete archive. - [GitHub profile](https://github.com/rajdeepmondaldotcom): Open-source work and repositories. - [LinkedIn profile](https://www.linkedin.com/in/rajdeep-mondal/): Professional profile. - [X profile](https://x.com/_rajdeepmondal): Short-form notes and public updates.