An independent lab for practical AI

Building with AI.
Sharing what
holds up.

Open-source tools, research notes, and practical experiments for people building with AI.

The fieldnotes method
From a question to a useful fieldnoteAsk a question, run an experiment, inspect the evidence, and publish a fieldnote. The evidence can lead back to a better question.01 / ASK02 / BUILD03 / CHECK04 / SHAREQuestionExperimentEvidenceFieldnoteinspectBetter questions. Useful things.
A practice of building in the open.
Questions worth exploring

Agents / Models / Economics / Governance

01 / The open lab

An idea you can get your hands on.

Explore projects

02 / Observations & explanations

Notes from the work.

All fieldnotes
EconomicsFN / 002

The cost of a completed task

Token prices are only the beginning. Count the tools, retries, and failed attempts behind a useful result.

Essay3 min read
GovernanceFN / 004

Reading AI regulation as a builder

Start with jurisdiction, your role, and the intended use. Learn to separate binding rules, proposals, and voluntary guidance.

Essay3 min read

03 / The reading room

Five foundations for understanding AI agents

One paper in depth. Four more in perspective. What the evidence says, where it stops, and why it matters for builders.

Foundations · Sep 20, 2026
Read the collection
  1. 01

    ReAct

    Connecting a plan to observations from the world.

    2022 · In depth
  2. 02

    Toolformer

    Learning when an external tool is useful.

    2023 · Research note
  3. 03

    Lost in the Middle

    Having context and using it are different abilities.

    2023 · Research note
  4. 04

    Reflexion

    Carrying feedback into the next attempt.

    2023 · Research note
  5. 05

    τ-bench

    Checking whether an agent reliably did the right thing.

    2024 · Research note

04 / Behind the fieldnotes

A little curiosity.
Something useful.

I’m Swapnil. I turn questions about AI into things you can explore, use, and improve.

This is a space for making complex systems clearer: through open-source projects, careful reading, and explanations grounded in evidence.

More about the work

Keep a thread of curiosity open

Follow the next fieldnote.

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