13 · Reference
Supported
assets
What you can pay with, what the change buys, and whether three cents actually routes.
What you can pay with
| Token | Notes |
|---|---|
| SOL | The network's own token. Nothing to approve. |
| USDC | The stablecoin most Solana pools price against. |
| USDT | Also fine, with slightly thinner routes on some pairs. |
| Anything else | Paste a mint address in the picker. If Jupiter can route it, the app will quote it. |
There is no approval step on Solana the way there is on other chains. You sign one transaction and it does exactly what it says, once.
What the change buys
Eight stock tokens, all issued by Backed as xStocks, all Token-2022, all eight decimals.
| Ticker | What it tracks |
|---|---|
| NVDAx | NVIDIA |
| TSLAx | Tesla |
| AAPLx | Apple |
| AMZNx | Amazon |
| SPYx | S&P 500 ETF |
| MSFTx | Microsoft |
| GOOGLx | Alphabet |
| METAx | Meta |
Mint addresses for all eight are in Addresses.
Does a 58 cent purchase actually work?
Yes, and it is worth showing rather than asserting. Quotes taken against live pools, buying each stock with three cents of change:
| Ticker | Pool liquidity | Price impact on $0.03 |
|---|---|---|
| SPYx | $5.1M | 0.0001% |
| NVDAx | $3.7M | 0.0004% |
| TSLAx | $1.2M | 0% |
| METAx | $1.0M | 0% |
| MSFTx | $725K | 0.0005% |
| GOOGLx | $574K | 0.0008% |
| AAPLx | $486K | 0.002% |
| AMZNx | $229K | 0.006% |
Liquidity moves, so these are a snapshot rather than a promise. The app quotes every crumb live and shows you the impact before you sign.
The starter basket
What the app suggests if you would rather not build one yourself.
| NVDAx | 40% |
| TSLAx | 20% |
| AAPLx | 20% |
| SPYx | 20% |
A starting point, not a recommendation. Change it to whatever you want; the weights only have to add up to 100.
One crumb, one leg
A round-up buys a single leg, not all four, because four will not fit in one Solana transaction. The app buys whichever leg is furthest below its target weight, so the basket converges on your proportions over a handful of swaps rather than arriving complete on the first one. The reasoning and the byte counts are in How it works.
Who issues these. The stock tokens are issued by Backed, not by Crumble. We buy what trades on Solana. What the token is worth, and who stands behind the share it tracks, is not ours to guarantee.