> For the complete documentation index, see [llms.txt](https://black-sheep-finance.gitbook.io/black-sheep-finance-docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://black-sheep-finance.gitbook.io/black-sheep-finance-docs/guides/funding.md).

# Treasury top-ups & funding agents

Agent wallets need two assets to operate:

* **USDC** — what they spend.
* **SOL** — what they pay network fees with (tiny — \~0.000005 SOL per tx).

## From an exchange

Most centralized exchanges support Solana withdrawals of USDC and SOL. Use the agent's pubkey as the destination address. Withdrawals usually arrive in under a minute.

## From your treasury wallet

If you keep a treasury wallet inside Black Sheep:

```ts
await bs.wallets.send(treasuryWalletId, {
  to: agent.pubkey,
  amount: 500,
  memo: "topup",
});
```

## From a hardware wallet

Use Phantom / Backpack / Solflare's send screen, paste the agent pubkey, sign on the device.

## Top-up rules

A useful pattern: schedule a daily script that tops each agent up to a target balance.

```ts
for (const a of await bs.agents.list()) {
  const { usdc } = await bs.wallets.balance(a.id);
  const target = 500;
  if (usdc < target * 0.5) {
    await bs.wallets.send(TREASURY_ID, {
      to: a.pubkey,
      amount: target - usdc,
      memo: `auto-topup ${a.label}`,
    });
  }
}
```

Run it on cron (GitHub Actions, Cloudflare Cron, Vercel Cron, etc.).

## Gas top-up

Each agent needs \~0.01 SOL to comfortably cover thousands of txs. The dashboard offers a one-click **Airdrop SOL** on devnet; on mainnet, send SOL manually.


---

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