Rebalance a Fiber Routing Node

Liquidity lab · 3 of 3

A circular payment shifts local balance from one channel to another. Your node does not gain funds; it pays a routing fee to improve where its liquidity is available.

Routing node

Move liquidity without closing channels

You→Bob→Network→Carol→You

You · Bob channel900 CKB

1,000 CKB capacity

Bob100 CKB

You · Carol channel100 CKB

1,000 CKB capacity

Carol900 CKB

Node local total1000 CKBAcross both channels

Bob outbound900 CKBSource direction

Carol outbound100 CKBDestination direction

Dry run

Quote the circular payment

Rebalance amount

CKB

Max fee

CKB

Leaves throughBob channel

Returns throughCarol channel

Simulated route quote2 CKB

Preview checks the outgoing balance, return direction, and fee cap without moving funds.

Map this lab to Fiber RPC

await node.sendPayment({
  target_pubkey: myPubkey,
  amount,
  keysend: true,
  allow_self_payment: true,
  dry_run: true,
  max_fee_amount: maxFee,
});

After execution, call list_channels to compare local and remote balances.