Toward a Simulation Organism
A position note proposing a Simulation Organism: a self-adaptive paradigm in which a general-reasoning agent co-designs an exascale simulation from inside its building blocks.
An open journal of physics simulation
Open essays. Open plugin. One Simulation Organism.
Stencil is an open journal of physics simulation. The skills, atoms, and reports behind each essay accumulate into a community-owned, open-source plugin — Claude Code today, Codex and other coding agents as they arrive.
Manifesto
Publishing for the era of agents.
Agents are now responsible for most of what gets built. Code is mostly written by them. They should be able to run physical simulations too — and very soon, they will. Scientific publishing, the practice of writing things down so others can build on them, has to re-ground around this.
A publication is worthwhile to the extent it raises the capability of the models and coding agents now doing the work. Everything else is filing. Stencil exists to make that explicit: every essay carries the skills, atoms, and verifiable reports its author chose to share.
Those artifacts accumulate. The article is read by humans; its companion plugin is installed by agents. Reading teaches one; the plugin teaches the other. The journal compounds, in the open, into a community-owned, versioned, attributed Simulation Organism.
Stencil is the first community-owned journal designed for this — Claude Code today, Codex and other coding agents to follow. If you have an essay that moves a skill, write it. If you have a skill that needs an essay, write it. The plugin grows one contribution at a time.
Publish what gets built.
Latest essays
- May 2026
The plugin
Skills that compound into one organism.
Every essay published here can carry the skills, atoms, and reports its author chose to share. They accumulate — versioned, validated, attributed — into a community-owned, open-source plugin focused on simulating the physical world. Claude Code today; Codex and other coding agents to follow.