Sam Goodwin on Alchemy

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 model7, which describes infrastructure changes before applying them. He explains how bindings23 connect runtime needs to infrastructure. 05:02 15:25 26:00 29:35

Sam calls the cloud a library at 29:50. Watch the moment.

Sources

  1. Sam Goodwin - Alchemy - YouTube. Sam Goodwin. Recording; used for Alchemy’s Effect model, plans, bindings, and cloud-library idea. Accessed 2026-10-01.

Last changed 2026-10-07 in 0e2d656. Source on GitHub. Change log.

Linked from

  1. A Layer as constructor. Sam Goodwin compares an Effect Layer that builds a service to a constructor.

    See Sam Goodwin on Alchemy and cartridges.¶

  2. Agent guide. An Effect stack so pure (aspirational) Kit Langton will blush.

    Sam Goodwin on Alchemy — Sam Goodwin explains Alchemy’s Effect model, plans, bindings, and cloud-library idea.

  3. Ambient cloud. Sam Goodwin describes a cloud experience where credentials and accounts become available through one interface.

    See Sam Goodwin on Alchemy.¶

  4. Anti-money. Sam Goodwin frames Alchemy as reducing SaaS products to libraries and shifting value elsewhere.

    See his Alchemy conversation.¶

  5. Change log. What changed in the files served here, newest first.

    Sam Goodwin on Alchemy — edited: feat(learn): teach cards 23 to 42 with plain lines, diagrams and snippets

  6. Cloud as a library. Sam Goodwin argues that cloud services can be consumed as libraries inside an application.

    Sources: Sam Goodwin on Alchemy and AI Engineer World’s Fair 2026.¶

  7. Full agent guide. An Effect stack so pure (aspirational) Kit Langton will blush.
  8. Rat Stack lore | rat-stack. Short, source-grounded notes on the ideas and decisions behind rat-stack.

    Sam Goodwin on Alchemy — Sam Goodwin explains Alchemy’s Effect model, plans, bindings, and cloud-library idea.

  9. Source change history (log.md). The generated change log as Markdown.

    Sam Goodwin on Alchemy — edited: feat(learn): teach cards 23 to 42 with plain lines, diagrams and snippets

  10. The plan model. Sam Goodwin describes Alchemy's plan outputs as a way to inspect infrastructure before deployment.

    See Sam Goodwin on Alchemy and Happy Path 116.¶