About Capital AI

A Capital AI account goes through the same path every time: sign up, verify who you are, fund the account, buy compute, deploy it. Some steps happen only in the app; once the account is open, the API can read it, trade for it and deploy for it.

The steps

Step	Where	What happens
1. Sign up	App	Create a login with your email. Guide.
2. Onboarding	App	Tell us who you are and verify your identity with our bank, Erebor. Guide.
3. Account opened	—	Your trading account is open. Follow it with GET /api/onboarding/status.
4. Fund it	App or API	Link a bank and deposit by ACH, or send a wire or USDC, into your Erebor deposit account. Guide. Trading uses a separate exchange balance that Capital AI credits once your account is open; see Transaction flow.
5. Buy compute	App or API	Take a provider’s listing on Offtake, or buy a GPU contract on the markets.
6. Deploy	App or API	Pair a provider’s BASIS contract with the GPU contract for the same month, and ops provisions the machines. Guide.
7. Trade the rest	App or API	Sell months you don’t need; buy more when you do.

Two kinds of contract

Every contract is one GPU for one calendar month (UTC) and is named <SYMBOL>-MM-YY.

Kind	Example	What it is
GPU	H100SXM-11-26	The benchmark for one GPU model in one month, from any provider. These are the liquid books: the market maker quotes them around the clock.
BASIS	BBA-11-26	One provider’s machines in one place, in one configuration, for that month. The three-letter code names the provider, location and per-node hardware. You get BASIS contracts by buying a listing on Offtake.

A deployment pairs BASIS contracts with the same number of GPU contracts for the same GPU and month. That pairing is what turns a position into running machines. Details in Contracts.

What the API can and can’t do

The API acts for one account, the one its key belongs to. It can’t create accounts.

You can, with the API	Only in the app
Read your profile and onboarding status	Sign up and onboarding
Read balances, deposit details and activity	Link a bank
Start an ACH deposit	Withdraw and send money
Place and cancel orders on the exchange	Read the live order book and your positions (coming to the API)
Request and stop deployments	Buy from an Offtake listing (coming to the API)
	Create and revoke API keys

New here? Start with Getting Started.

What’s available

Endpoint	Scope
GET /api/v1/whoami	read	Account
GET /api/me	read	Account
GET /api/onboarding/status	read	Account Opening
GET /api/v1/account	read	Account
GET /api/v1/accounts	read	Balances
GET /api/v1/deposit-instructions	read	Balances
GET /api/v1/transactions	read	Activity
GET /api/v1/linked-accounts	read	Linked banks
GET /api/v1/contacts	read	Linked banks
POST /api/v1/deposits	trade	Deposits
POST /api/v1/transfers/quote	trade	Deposits
POST /api/v1/compute/commands	trade	Orders
POST /api/v1/compute/deployments	trade	Deployments
POST /api/v1/compute/deployments/{id}/end	trade	Deployments