Aider's --conventions flag loads formatting rules. Brainfile gives AI your domain expertise, decision frameworks, communication style, and professional context — the stuff that actually changes output quality.
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Aider is an excellent terminal-based AI coding assistant. Its repo-map is genuinely impressive — it builds a graph of your codebase so the model understands file relationships without you manually pasting context. That's real engineering.
But Aider's context system has three hard limits that no amount of configuration resolves:
.aider.conf.yml sets model, edit format, auto-commits, and temperature. These are tool preferences — they don't tell the AI anything about your role, your domain, or how you want to work.
The --conventions flag is designed for formatting rules: tabs vs spaces, naming conventions, file organization. It's not designed to carry professional depth, domain expertise, or decision frameworks.
Aider's conventions file only applies inside Aider sessions. The moment you switch to Claude Code, Cursor, Windsurf (now Devin Desktop), or ChatGPT, your context is gone. You start from zero every time.
Here's what a typical Aider configuration looks like versus what a Brainfile Pro configuration contains. The difference in depth is not incremental — it's categorical.
| Feature | Aider Conventions | Brainfile Pro |
|---|---|---|
| Code style rules | Yes — formatting, naming, lint rules | Yes — included in all configurations |
| Role and professional context | No — conventions are structural, not professional | Yes — role-specific configurations with domain knowledge |
| Decision frameworks | No — not a design goal of Aider's context system | Yes — prioritized tradeoffs, go/no-go rules per domain |
| Communication preferences | No — AI defaults to generic verbosity | Yes — terse, direct, formatted exactly how you work |
| Where it applies | Inside Aider sessions only | Claude Code (CLAUDE.md, .claude/rules/, brain/ files). Brainfile ships no Cursor, Windsurf or ChatGPT format |
| Repo-map / codebase understanding | Yes — Aider's repo-map is excellent and automatic | N/A — complements repo-map with deeper human context |
| Customizable context priority | No — repo-map prioritization is automatic, not configurable | Yes — you control exactly what AI considers highest priority |
| Domain depth per profession | None — same conventions file structure for all roles | Pro adds 15 role packs: Developer, Founder, Trader, Marketer, Lawyer, Consultant and more |
| Maintained and updated | You write and maintain conventions files yourself | Weekly freshness feed as Claude Code changes — we do the maintenance |
| Works without running Aider | Conventions file only active inside an Aider session | CLAUDE.md is always active in your project — any session, any tool |
Aider's repo-map automatically analyzes your codebase — function signatures, class hierarchies, file relationships — and feeds relevant pieces to the model. This solves the "AI doesn't know what's in my repo" problem brilliantly.
But there's a different class of context Aider doesn't touch: the human context. Who is writing this code? What tradeoffs matter most? What's the team's philosophy? What does "done" mean for this project?
Brainfile and Aider are not competitors for the same job. Aider's repo-map tells AI about your code. Brainfile tells AI about you. Many developers use both.
Most developers use more than one AI tool. Aider conventions files load only inside Aider. Brainfile is built for Claude Code: its files load in every Claude Code session. It does not ship formats for other tools.
Terminal-first editing workflows. Large codebases where repo-map context is critical. Developers who prefer CLI over GUI. Automated multi-file refactors where Aider's diff format is precise and reliable.
Giving Claude Code deep professional context that persists across every session. Making Claude behave like a senior colleague who knows your domain, not a generic assistant. Non-coding roles: founders, traders, marketers, ops leads, analysts.
Aider's repo-map handles codebase structure. Your Brainfile CLAUDE.md handles who you are and how you work. No overlap, complete coverage. You can run Aider and keep Brainfile's CLAUDE.md for your Claude Code sessions.
The Autopilot protocol, 10 pattern files and a weekly freshness feed. Pro adds 15 role packs. Start free — 30 days, no card.
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