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By the end of this page, your agent has an approved mandate, and it tells you when it can pay. Each approved purchase then gets a single-use virtual card.

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What you need

  • An invite from Praesia, which holds your skill link. Request an invite.
  • A terminal harness, such as Claude Code, OpenCode or Codex CLI, or a hosted assistant, such as Dot or Grok Bot.
  • For a terminal harness, macOS or Linux. WSL (Windows Subsystem for Linux) is experimental for now.
  • For a terminal harness, Node.js 22.18.0 or later. Run node --version to check.

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Set up Praesia

1

Give your agent the skill link

Open a new conversation, and send this message with your skill link:
2

Approve the commands

Some harnesses may ask you to approve some commands. If yours refuses one, your agent gives you the command to run in a terminal. If the setup still can’t finish, follow Manual install.
  • It installs the praesia command, if it’s missing.
  • It saves the Praesia skill in your harness.
  • It keeps the agent’s key on the machine.
  • It adds the local Praesia MCP server to your harness.
  • It installs agent-browser, if your harness has no browser tool.
3

Approve your agent

Your agent gives you a sign-in link. Open it, create your account or sign in with your passkey, and approve the agent.
4

Approve a mandate

Your agent interviews you about the rules you want, then gives you an approval link. Open it and approve with your passkey.
5

Ask for a purchase

In the sandbox, your agent pays our demo merchant, a hotel site in Ibiza. Test in the sandbox gives a mandate and purchases that work.

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Next steps

Test in the sandbox

Go from an approved mandate to a paid purchase.

Mandates

See examples for several kinds of purchase.