coreCerebrum

Audience

Built for people who already hit the ceiling.

This is not an introduction to AI-assisted development. It assumes you are already running an agent every day, already know what it is good at, and are tired of doing it one window at a time.

01

Senior engineers

You already know exactly what needs doing in six different places in the codebase, and there is no good reason to do them one after another.

02

Technical founders

You are the whole engineering team, so parallelism is the only headcount available to you.

03

Small agency and product teams

You juggle several clients and several codebases, and the knowledge about each one currently lives in whoever touched it last.

Migrate a deprecated API 8 cards, running at once
checkout-service refactor/drop-v1-client clean
billing-api refactor/drop-v1-client clean
edge-router refactor/drop-v1-client clean
search-index refactor/drop-v1-client clean
session-store refactor/drop-v1-client clean
notify-daemon refactor/drop-v1-client clean
audit-log refactor/drop-v1-client clean
payments-core contract changed here needs you
7 came back clean 1 needed you one review pass, not eight

Pattern one

The same change across eight repositories.

The work is mechanical, wide, and mind-numbing by hand. You write eight cards and get eight worktrees on eight branches running at once. Seven come back clean, and the eighth flags that the contract actually changed there, which is the one that needed you all along.

The failure mode this avoids: doing it serially, getting bored by the fourth, and getting sloppy by the sixth.

Pattern two

Inheriting something nobody wants to explain.

The first week in an unfamiliar repository is spent rediscovering things somebody already knew. Every session that learns a convention, hits a trap, or settles an argument writes it down, so week two starts where week one ended rather than back at the beginning.

For an agency this is the difference between a client codebase being expensive to touch and being routine.

week two, same repository
memory: 14 entries for this project
convention tests live beside the module, not in tests/
gotcha the ORM hook runs before the access check
decision queue chosen over cron, 2026-05
bug bug-088 migration ordering, fixed
surfaced before the first file was opened

BEFORE

You write, then you wait

One agent works while you watch it. Your throughput is capped by how fast a single session can think, and most of your day goes on reading a log.

AFTER

You direct, then you review

Several sessions work while you decide. Your throughput is now capped by how fast you can review diffs, which is a far higher ceiling and a much better use of a senior engineer.

This is the honest trade. Parallel agents do not remove work, they move it. What you get back is a queue of reviewable branches instead of a queue of things you have not started.

DRAFT

The reply you owe

It is drafted from the actual thread and the current state of the project, rather than from a blank prompt.

SCOPE

The proposal

You scope and specify the work with the codebase in reach, instead of reconstructing it from memory.

CHECK

The security pass

A reviewer is dispatched at the diff, which is considerably cheaper than meeting the same problem as an incident.

SHIP

The deployment

You run the last mile from the same board that produced the branch.

Honest limits

This is the wrong tool for some people.

Saying so upfront is cheaper for both of us than processing a refund later.

You are new to coding agents

Start with a single session and learn what it does well. Come back when one window has become the thing holding you up.

Your work is one deep thing at a time

Parallelism only pays off when there are several independent pieces of work. A single hard problem does not split across agents.

You will not review the diffs

More agents producing branches nobody reads is worse than one agent you were actually watching.

If one window is your constraint, this removes it.

$150 per user per month.