---
title: "Sam Goodwin on Alchemy"
description: "Sam Goodwin explains Alchemy's Effect model, plans, bindings, and cloud-library idea."
plain: "Sam Goodwin explains how Alchemy uses Effect, plans and bindings, and says the cloud becomes a library."
group: source
speaker: "Sam Goodwin"
date: 2026-05-11
url: https://youtu.be/MtKHzAH6uXM
sources:
  - url: https://youtu.be/MtKHzAH6uXM
    title: "Sam Goodwin - Alchemy - YouTube"
    publisher: "Sam Goodwin"
    note: "Recording; used for Alchemy’s Effect model, plans, bindings, and cloud-library idea."
    accessed: "2026-10-01"
---

# Sam Goodwin on Alchemy

> For agents: start with the [agent guide](https://ratstack.sh/llms.txt). Every page is Markdown by default; add `Accept: text/html` for HTML.

New on /news: [Effect Office Hours 52 with Resonate HQ](/news).

Sam describes Effect as a computation with typed errors and requirements, built from layers. He compares Alchemy's earlier await-based model with a plan model, which describes infrastructure changes before applying them.
He explains how bindings connect runtime needs to infrastructure. [05:02](https://youtu.be/MtKHzAH6uXM?t=302) [15:25](https://youtu.be/MtKHzAH6uXM?t=925) [26:00](https://youtu.be/MtKHzAH6uXM?t=1560) [29:35](https://youtu.be/MtKHzAH6uXM?t=1775)

Sam calls the cloud a library at 29:50. [Watch the moment](https://youtu.be/MtKHzAH6uXM?t=1790).

## Sources

1. [Sam Goodwin - Alchemy - YouTube](https://youtu.be/MtKHzAH6uXM)
   Sam Goodwin. Recording; used for Alchemy’s Effect model, plans, bindings, and cloud-library idea. Accessed 2026-10-01.

## Lore on this page

- [The plan model](/lore/plan-model)
- [Bindings](/lore/bindings)

## Linked from

- A Layer as constructor → Sam Goodwin compares an Effect Layer that builds a service to a constructor. → [Read page](https://ratstack.sh/lore/layer-constructor-pattern)

- Agent guide → An Effect stack so pure (aspirational) Kit Langton will blush. → [Read page](https://ratstack.sh/llms.txt)

- Ambient cloud → Sam Goodwin describes a cloud experience where credentials and accounts become available through one interface. → [Read page](https://ratstack.sh/lore/ambient-cloud)

- Anti-money → Sam Goodwin frames Alchemy as reducing SaaS products to libraries and shifting value elsewhere. → [Read page](https://ratstack.sh/lore/anti-money)

- Change log → What changed in the files served here, newest first. → [Read page](https://ratstack.sh/log)

- Cloud as a library → Sam Goodwin argues that cloud services can be consumed as libraries inside an application. → [Read page](https://ratstack.sh/lore/cloud-as-a-library)

- Full agent guide → An Effect stack so pure (aspirational) Kit Langton will blush. → [Read page](https://ratstack.sh/llms-full.txt)

- Rat Stack lore | rat-stack → Short, source-grounded notes on the ideas and decisions behind rat-stack. → [Read page](https://ratstack.sh/lore)

- Source change history (log.md) → The generated change log as Markdown. → [Read page](https://ratstack.sh/log.md)

- The plan model → Sam Goodwin describes Alchemy's plan outputs as a way to inspect infrastructure before deployment. → [Read page](https://ratstack.sh/lore/plan-model)