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Citadel Culebra
Six open · two in buildCulebra Tech

We stopped waiting for somebody to build the tools.

A marketplace, a library, a species database, collection software, a community, a journal, a point of sale, a lock on the cage, and one sign-in across all of it. Ten things were on the plan. Six are open right now, two are in build, one is the core the rest run on, and one got renamed. This page tells you which is which.

Why we build our own

Every tool this field has was built for something else. Collection records in a spreadsheet. Sales through a processor that freezes your account the moment it works out what you sell. Care information scattered across threads and out-of-print books. A community renting space on somebody else's platform, one policy change from disappearing. So we built the whole stack ourselves, on one account, and we own every part of it.

Ten products, one sign-in, one shared core. Nothing here is a white-label of anything, and none of it is for sale to a data broker.

See it working
culebracodex.com/species · recorded live, unedited

Ten thousand species, narrowed in one line.

This is not a mockup and it is not a roadmap. It is a screen recording of the live database, taken the day this page was built. Type a genus, stack a class filter and a conservation status on top of it, and watch the record count fall. Then go and do it yourself, because it is free and there is no account.

10,406

Records on file

6,018

Lizards

3,845

Snakes

0

Cost, ever

Open the database
Open now

Six you can open in the next minute.

Every screen below is a capture of the running product and every link resolves. Follow one and you land on exactly what you are looking at.

The Culebra Command sign-in, one account for the whole stack
Culebra Command on a phone
01Open now

Culebra Command

The front door

One account for everything below it. You make it once, and what you can reach is decided by what you are enrolled in rather than by how many passwords you can remember. It installs on a phone like an app.

  • One sign-in
  • Self-serve signup
  • Installs as an app
command.culebracerebro.com
The Culebra Codex library front door
The Codex on a phone
02Open now

Culebra Codex

The library

The books, the species database, the cinematic readers, the courses and the flashcards. Reading the database costs nothing and always will. Individual books run $4.99 to $19.99, and every reader works with no signal at all.

  • 10,406 species
  • Reads offline
  • Free database
culebracodex.com
The Cerebro Culebra collection dashboard, showing today's care and enclosure climate
Cerebro Culebra collection records on a phone
03Open now

Cerebro Culebra

Collection management

The first product we ever shipped and still the one that gets used every day. Every animal on file with its feed and shed history, weights, breeding pairings, routines, tasks and the shipping weather for the day you are sending something out. It was built because a spreadsheet cannot tell you what is overdue.

  • Per-animal records
  • Breeding + routines
  • Reachable from Command
Sign in through Command
The Culebra Exchange marketplace front page
Culebra Exchange on a phone
04Open now

Culebra Exchange

The marketplace

Animals change hands here, with escrow on the order and shipping built into it rather than arranged over direct messages afterwards. It is wired to Cerebro at both ends, so an animal that sells leaves your collection and arrives in somebody else's with its history attached.

  • Escrow checkout
  • Breeder onboarding open
  • Synced to Cerebro
culebraexchange.com
The Culebra Connect front page
Culebra Connect on a phone
05Open now

Culebra Connect

The community layer

Spaces by species and by discipline, threads, direct messages and the faculty going live. You can walk through the whole thing as a preview before you make an account, which is the opposite of how every other community in this field works.

  • Species + discipline spaces
  • Faculty go live
  • Browse before joining
culebraconnect.com
The Culebra Chronicle journal on the Citadel Culebra site
The Culebra Chronicle on a phone
06Open now

Culebra Chronicles

The journal

Where the people who teach here put their opinions and the school's official word in the open. Twelve entries are published and free to read right now, a new one every two weeks. Signing up works; the email send itself is the last piece we are wiring, so for the moment you read it on the page.

  • 12 entries published
  • Free to read
  • Every two weeks
citadelculebra.com/chronicles
Not open yet

And two we are not going to pretend about.

One is written and running behind a door that has not opened. The other is a hardware program with no prototype yet. Neither gets a Live badge and neither gets a screenshot, because there is nothing honest to show.

07Built · not open yet

Culebra POS + ERP

Retail and operations

A register and a real set of books for a shop that sells live animals, which is a thing no point of sale on the market actually does. It serialises the animal, so a sale moves that specific animal out of the collection, writes the compliance record with the buyer and the guarantee on it, and posts a balanced journal entry into the right entity's ledger. Phase one is written and running behind a gated preview.

  • Serialised live inventory
  • Multi-entity ledger
  • Pilot store from August 31

No screen here on purpose. It runs behind a gated preview and has not been promoted, and we are not going to put a mockup on a page whose whole argument is that the software is real.

08In build

Culebra Lock

Hardware

Electronic locks on individual enclosures, controlled from the collection app, wired rather than battery so there is no dead-battery failure mode. The design rule is the inverse of a building door: it fails secure. Power loss locks. A firmware fault locks. Venomous gets no remote path at all, and two people have to be in the room.

  • Fails secure
  • Per-enclosure
  • Prototype bench, 2026

Nothing to photograph yet. The program is specified down to the bus and the credential ladder, and the first bench prototype is the next step.

Underneath all of it
09

One core. Ten front doors.

Cerebro OS

The shared core

Every product above runs on the same core: one identity, one set of records, one permission model. That is why your Codex notes, your Cerebro animals, your Exchange orders and your Connect profile are the same account rather than five accounts that occasionally sync. Cerebro OS itself is internal — there is no consumer door on it and there is not meant to be. It is the thing that makes the ten doors act like one building.

Identity
One account, every product
Records
One database, scoped per user
Ad networks
None, on any surface
AI training on our pages
Refused in the terms themselves
Your work
Exports as plain files, whenever you ask
10The AlmanacThe dashboard

The Almanac was the original name for one dashboard over the whole stack. It got built, and then it got renamed: it is Culebra Command, at the top of this page. What still carries the name is the read-only Almanac panel inside Cerebro Culebra, which is where a collection's numbers surface at a glance. We are listing it because it was on the plan, and telling you what happened to it because a roster with a phantom product on it is worth nothing.

Before you spend anything

Three things you can do in the next ten minutes.

The school opens properly in September and the courses are behind a door we are still finishing. None of that stops you starting tonight, because the front half of this is free and it is going to stay free.

01Free

Look up any species on earth

10,406 records with taxonomy, range and conservation status, each one stamped with where it came from and when it was last checked. Where there is no record it says so instead of inventing a paragraph.

No account. No email.

Open the database
02Free

Read a whole book, free

Croc & Gator Wise in the Americas edition and The Bearded Dragon are free to read right now, front to back, in the same reader the paid titles use. It works on a plane and installs to a home screen.

Starts in one click.

Open the library
03Free

Walk through the community before you join

Spaces by species and by discipline, the threads, the faculty. You can read the whole thing as a visitor and decide from the inside, which is the opposite of how every other community in this field works.

Browse first, join later.

Step inside
Tuition

The Complete Keeper Membership · Founding Class of 2026

One tuition carries the whole stack.

Everything on this page that is open, plus every course and every book, comes with school enrolment. The database stays free either way. The founding rate is locked for as long as you stay enrolled.

If you want a cheap pet and a YouTube video, you do not need us. This is for people who are in it for the animal's whole life.

  • Every book in the Codex, including the ones still on the press
  • Every course, every exam, every certificate
  • The species database and the research layer
  • Culebra Connect, where the faculty answer questions in the open
  • Cerebro Culebra for your own collection records
  • Culebra Chronicles, the newsletter, registered automatically
Orientation
Wednesday, September 9 · online
Academic calendar
Published the last week of August
  • Focused credential$199
  • Signature credential$349
  • Specialty credential$499
  • Advanced credential$799
  • Every book, published at $4.99–$29.99Included
  • The credentials alone, taken separately$1,846
Founding ratenormally $99.99
$79.99/mo

Billed $79.99/month. Your membership renews automatically each month until you cancel. Cancel anytime — no future charges.

Manage or cancel anytime in your account.

Orientation is September 9. Enrol before it and you are in the first class, at the founding rate.

Or $799 a year at the same founding rate, which is $160.88 less than paying by the month.

Founding tuition is locked for the first 15,000 founders and stays locked for as long as you stay enrolled. When those seats are gone the rate is gone, and everyone after joins at $99.99.

No money-back guarantee, on purpose.

We cannot do the husbandry for you and we are not going to pretend otherwise. So instead of a refund promise, the front half is free and always will be: the whole species database, the free books, and the community to walk through before you make an account. Look at all of it, then decide. And if you do enrol, one click cancels and you are never charged again.

Read the curriculum first
Start free

The database costs nothing. Go and break it.

No account, no email, no trial. Search 10,406 species right now. Leave an email if you want to hear when a product opens or a book comes off the press, and you can leave from the bottom of any message.

One email when something ships. No ads, no list rental.

Straight answers

About the stack.

01Why build ten things instead of one good one?

Because they are one thing with ten doors. The same account, the same records and the same permission model sit under all of it, which is the only reason an animal can sell on the Exchange and leave your Cerebro collection in the same movement. Ten separate apps could not do that.

02Which of these can I actually use today?

Command, the Codex, Cerebro Culebra, the Exchange, Connect and the Chronicles. Every one of them is a link on this page and every link resolves. The point of sale is built and sitting behind a gated preview, and Culebra Lock is hardware that has not been prototyped yet. We would rather tell you that than badge everything Live.

03Do I need to pay to look at any of it?

No. The species database is free with no account. The Chronicles are free. Connect lets you walk through the whole community before you join. Tuition is what opens the courses, the credentials and the books that are not free.

04What happens to my data?

It is yours and it leaves when you do. Notes, highlights, collection records and flashcards export as plain files whenever you ask. There is no ad network on any surface, we do not rent the list, and refusing AI training on our pages is written into the terms rather than left to a robots file.

05Is Culebra Lock real or a concept?

It is a specified program with no prototype yet, and that is exactly how it is labelled above. The latch is a part we buy; the rack controller, the bus, the firmware and the credential ladder are what we build. First bench unit is the next step, one enclosure at a time.

06Who is this actually for?

A keeper with six animals uses Cerebro and the database. A breeder uses the Exchange and the genetics tools. A shop will use the register. A student uses the Codex and the courses. Most people start with the free database and find the rest later.

Culebra Tech

Software for a field that never got any.

Start with the part that costs nothing and see whether it holds up.