Updated Nov 1, 2026
Developers
Read Ultramint from your own code or connect an AI agent to it.
Developer API
Read markets and your own portfolio from your scripts.
| Auth | An API key. Public data needs no key. |
| Base URL | /api/v1 |
| Rate limit | 300 requests a minute per key |
Create a key in account settings. The API reference lists every endpoint, the rate limits and the error codes.
Hosted MCP
Connect Claude or another AI agent to your Ultramint account. Your agent can browse markets and read your portfolio, with your consent.
| Endpoint | /mcp |
| Sign-in | OAuth 2.1 with PKCE |
| Access tokens | Last 15 minutes and refresh for 30 days |
Connect in four steps: add the server URL to your client, sign in, approve the scopes you want, and start asking.
| Scope | What your agent can do |
|---|---|
markets.read |
Browse markets and get quotes |
portfolio.read |
Read your positions, history, activity and payouts |
bets.status |
Track your Buys |
markets.author |
Start a Mint |
Your agent never spends. A Buy or a Mint opens Ultramint in your browser, where you confirm with your own wallet.
You can see and disconnect every client you've approved in account settings. Full setup for each client is on the Hosted MCP page.
Town API
A specification for Partner Towns whose own servers act for their members. It covers wallet authorization, minting and trading.
It isn't live yet, and partner keys aren't available. Read the specification.
Terms
Later. API and developer terms.
Did this not answer it? Contact support.