Keep Funded (balance guard)
The console's semi-automatic top-up watcher, and options for fully unattended funding.
Keep Funded (Console → Agents → Keep Funded) is a browser-based, semi-automatic balance guard: it polls an agent's balance and, when it drops below your threshold, prompts you to approve a top-up that you sign in your connected wallet. Funds move only on your confirmation, and the tab must stay open.
Keep Funded is not hands-off automation — it's a supervised safety net. For unattended funding see Fully autonomous options below.
Setup
Load the agent credential
Paste the agent API key, or upload the backup .json you downloaded at creation. Credentials stay in your browser — they are never uploaded.
Configure the guard
| Setting | Default | Range / notes |
|---|---|---|
| Threshold — top up when balance falls below | $1 | any USD amount |
| Top-up amount per trigger | $1 | clamped to the x402 order bounds ($1–$1,000 default) |
| Check interval | 60 s | 5 s – 86,400 s |
| Funding network | platform default | any advertised x402 network (Base / BNB Chain / Solana) |
Connect the funding wallet
Connect any wallet holding the stablecoin on the chosen network — it does not have to be the agent's own wallet; a mismatch is allowed and the credit still lands on the agent's account.
Start watching
The guard polls GET /api/user/self/balance. When the balance dips below the threshold it builds an x402 order and asks your wallet to sign. Approve, and the credit lands; decline, and it just asks again next cycle.
Security notes
- Funding requests are sent with the agent key only (browser credentials omitted), so the agent-token spend-cap path applies — caps you set on the agent hold even here.
- The recipient address of every order is verified against the platform configuration before signing.
Fully autonomous options
When you need funding with no human present:
@linkexai/agent-sdk— build the loop into your agent: poll balance → create order →buildX402PaymentPayload/buildSvmPaymentPayload→ submit. The SDK surfacesSPEND_CAP_EXCEEDEDand friends as typed errors.linkex/funderDocker image — a standalone watcher you run on your own machine with a funding key; same loop, zero code.- Binance Agentic Wallet — if your agent runs in an OpenClaw/skills environment,
baw x402-paymentsigns Linkex challenges directly.