Architecture Decisions

Code Reviews

Production Incidents

RFCs

Postmortems

Prompt History

Trade-offs

Lessons Learned

Brain v1·evolving

Engineer Brain Platform

Build Digital Engineers.
Not AI Assistants.

Compile real engineering judgment into persistent digital engineers that work inside Claude, Cursor, Codex, and AntiGravity.

Start Building Your Engineers

The core flow

From lived engineering experience to an installed digital engineer.

Preserve first. Normalize second. Interpret third. Nothing enters the Brain without evidence, and the full Brain is never sent to a model.

Experience

Real engineering work

Raw Artifacts

Preserved, immutable

Knowledge Objects

Normalized, canonical

Brain Graph

Validated intelligence

Canonical Profile

Persistent identity

Brain Runtime

Task-aware context

Platform Compiler

Platform-aware output

Installation

Claude · Cursor · Codex · AntiGravity

E3A does not store prompts and call them an Engineer.

It preserves real evidence, compiles it into validated structured intelligence, and builds a persistent identity that outlives any single AI platform.

E3A IS

▹An Engineer Profile platform

▹A knowledge-preservation system

▹A structured Brain compiler

▹A task-aware Brain Runtime

▹A token-optimization system

E3A IS NOT

✕A generic chatbot

✕A ChatGPT clone

✕A repository summarizer

✕A prompt library only

✕An MCP server only

Compile once, install anywhere

The Brain is the asset. Platforms are replaceable runtimes.

Knowledge captured for Claude can be installed on Cursor. Platform selection is only a compilation target — the compiler decides the file tree, not the knowledge.

Claude

One SKILL.md per module under .claude/skills/, discovered from its description. Optional MCP scaffold.

.claude/skills/<module>/SKILL.md

Cursor

Imperative .mdc rules under .cursor/rules/. Core and avoid always apply; domain rules bind to file globs.

.cursor/rules/<module>.mdc

Codex

Plain-markdown AGENTS.md at the root plus scoped directory files, with unscoped modules as .codex/skills/.

AGENTS.md

AntiGravity

Rules, skills, and slash-command workflows under .agents/, each capped at 12,000 characters.

.agents/rules/*.md

You don't manage tools

You build and improve Engineers.

01Build

→

02Improve

→

03Validate

→

04Compile

→

05Install

→

06Evolve

Your judgment.
Installed everywhere.

Turn how you actually engineer into a digital engineer that works alongside you — in every AI platform you use.

Start Building

E3A

The Brain is platform-independent · The Compiler is platform-aware