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Introduction
Tapehouse is portfolio margin for Stock Tokens on Robinhood Chain. This is where you read its prices, borrow against a portfolio and build on it.
Tapehouse lets a holder deposit a whole portfolio of Stock Tokens and borrow against it as one position. Because the position is priced as a portfolio, a diversified one earns more borrowing capacity than the same assets priced one by one, and a concentrated one earns less.
The equity market is closed for most of the week and Stock Tokens trade around the clock. Tapehouse keeps a price band on every Stock Token that stays on chain while the market is shut, says what state it is in (open, closed, degraded or halted), and states a position's liquidation price before anyone signs.
What is running#
Everything in these pages runs on Robinhood Chain's testnet, chain 46630. The header shows the head block of the testnet's public index, read when you opened the page. Verification shows how to check each contract against its source.
Where to start#
Read the band
Follow the quickstart to read TSLA's band with the TypeScript SDK, Go, Rust or curl.
Understand what you read
The band explains what its state, centre and half-width mean, and the session explains why it widens when the market closes.
Borrow
Open an account, then borrow with the liquidation price in front of you.
For agents#
Every page is served as Markdown at its own address with .md appended, for example /quickstart.md. /llms.txt lists the pages with a line each, and /llms-full.txt is the whole documentation in one file. The MCP server reads the chain directly.