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Everything you need to use Capital AI from the app, your own code, or your terminal.

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Welcome to Capital AI

Capital AI is a market for GPU compute. You hold contracts, each one GPU for one calendar month, buy and sell them on the Capital AI exchange like any other instrument, and deploy the ones you keep: pair a provider’s contract with the matching GPU contract, and the machines are provisioned for you for the month.
  • Find your way around. Home, Markets, Compute and Offtake, and what each screen shows. Start here.
  • Open and fund an account. Sign up, verify who you are, deposit by ACH, wire or stablecoin. Start here.
  • Buy compute. Take a provider’s listing on Offtake, or buy a benchmark contract on the markets.
  • Deploy it. Turn contracts into running GPUs on the Compute page.
  • Do it from code. Create an API key and place your first order in five minutes. Start here.
  • How a transaction works. From sign-up to a running GPU, what moves where and what is recorded. Transaction flow.
The Capital AI Home screen

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Basics

  • App: https://capital.ai
  • API base URL: https://capital.ai, the same host as the app. Every endpoint below is under /api.
  • Format: JSON request and response bodies. Integers from the exchange (prices, quantities, timestamps) arrive as strings.
  • Authentication: an API key in the Authorization header. See Authentication.
  • Errors: standard HTTP status codes with a JSON body. See Errors.