FOUNDER STORY

Building Neul Labs — high-performance AI agent infrastructure in Rust.

Neul Labs is the company I am building now. We work on the runtime, safety, observability, and deployment layers that let AI agents ship in production. The stack is Rust-native. The bet is that the next decade of AI is not about the models — the models are commoditising — but about the infrastructure that surrounds them.

GitHub Docs
THE BET

Why Neul Labs

Three things converge at Neul Labs:

  1. The model layer is commoditising. GPT-5, Claude 4, Gemini 2 — they're all within 5% of each other on most benchmarks. The next decade of competitive advantage is in the infrastructure around the models.
  2. AI agents are the new application platform. Every SaaS category is being re-platformed on top of agents. The companies that win the next decade will be the ones with the best agent infrastructure.
  3. Production safety is unsolved. Most agent demos are impressive. Most agent production deployments are held together with hope. We work on the safety, observability, and kill-switch layers that make agents trustworthy.
FRAMEWORKS

What we publish

Open-source frameworks and papers that ship with the company. Each one is a building block for the next.

Framework

Substrate Pattern

A safety architecture for LLM-powered AI agents. Substrate is the layer below the model — the part that decides what the agent is allowed to do, and what it is not.

Framework

Vibes Inside Guardrails

A framework for production-ready AI-assisted development. The vibe-coding pattern, with the guardrails that make it safe to ship in regulated environments.

Framework

Defence in Depth

Kill-switch architecture and circuit breakers for AI agents. Multiple independent layers of safety, each one tested against the others.

Framework

Tiered Governance Model

AI governance for banks, insurers, and asset managers. A 4-tier model (T0-T3) aligned to NIST AI RMF, ISO/IEC 42001, and the EU AI Act.

OPEN SOURCE

What we maintain

Rust-native tools for AI agents, the GDELT data corpus, and the protocols we depend on.

fragaria

Chain of Thought reasoning API with RL. Integrates OpenAI, Groq, Together.ai.

21 stars

gdelt-cli

GDELT Project CLI for AI agents. Rust.

gsheet-cli

Google Sheets CLI with DuckDB + MCP. AI-agent ready.

hubspot-cli

HubSpot CRM gateway for AI agents.

apollo-io-cli

Apollo.io CLI for AI agents. Sales intelligence, programmatic.

harmony-protocol

Reverse-engineered Rust implementation of OpenAI's Harmony response format for gpt-oss models.
FAQ

Frequently Asked Questions

Who founded Neul Labs?
Dipankar Sarkar is the founder and principal of Neul Labs. He is an IIT Delhi alumnus, Takshashila Institution strategic studies graduate, 5x founder (Kwippy, Jaja.tv, Octo.ai, ExpressMOJO, Boom Labs), and 16+ advisor. His previous role was Principal AI Architect at a UK fintech in Edinburgh, where he built an internal agentic AI platform and presented agent guardrails to the FCA sandbox..

What does Neul Labs build?
Neul Labs builds high-performance AI agent infrastructure in Rust. Production agent runtime, safety architecture (Substrate Pattern, Defence in Depth), observability, and Rust CLI tools for AI agents. The bet is that the next decade of AI is not about the models — it's about the infrastructure around them.

Where is Neul Labs based?
Neul Labs is a remote-first company. The founder (Dipankar Sarkar) is based between Edinburgh, UK and India.

Is Neul Labs hiring?
Selectively. We hire engineers who ship in Rust and care about production safety. If that sounds like you, send a note to me@dipankar.name with a link to something you've built.