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Holdfast docs
Holdfast is the Solana launchpad where backers buy first and share the profit. Backers' SOL makes a pump.fun token's first buy, which sits in an on-chain vault traded only by a rate-limited agent; backers get most of the agent's realized profit and the rest buys and burns the Holdfast token.
Start here
| If you want to… | Read |
|---|---|
| Understand the mechanism in two minutes | How it works (2 min) |
| Back a raise and earn | For backers |
| Launch a token | For creators |
| Trade | For traders |
| Check the claims | Verify on-chain |
| Build on the data | Indexer API |
The numbers
- Fixed supply of 1,000,000,000 per launch; the bundle buys at most the creator’s cap of it.
- 75% of the vault agent’s realized sell profit to backers, 25% to buy back and burn the Holdfast token; the same split on pump.fun’s creator fee (vault / buyback pool). Creators earn 0% of fees; Holdfast earns the 1% launch fee and the create fee.
- Agent band 2% around the EMA; buys ≤ 10% of vault SOL and sells ≤ 5% of vault tokens per 60 minutes.
- 100% refund if a raise misses its minimum; the vault’s SOL back to backers when a dead launch is wound down.
- Vault withdrawals only by the platform admin (
admin_withdraw_vault), each one shown on the launch page.