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Overview

This guide covers the mechanics of supplying capital to Centuari, from placing orders to managing active positions.

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Placing a Lend Order

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Easy Mode

1

Select Asset & Amount

Choose stablecoin and enter amount
2

Review Terms

System shows:
  • Estimated rate
  • Estimated maturity
  • Auto rollover status
3

Confirm

One-click to submit order

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Advanced Mode

1

Select Asset & Amount

Choose stablecoin and enter amount
2

Set Your Rate

Enter desired APY (e.g., 8.5%)
Higher rates = longer wait for match. Check order book for current market.
3

Choose Maturity

Select from:
  • Preset durations (30d, 60d, 90d, 180d, 365d)
  • Custom date picker
4

Configure Auto Features

Toggle auto rollover on/off
5

Confirm

Submit order to book

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Order States

StateDescription
PendingOrder in book, waiting for match
Partially FilledSome amount matched, rest waiting
MatchedFully matched, position active
CancelledUser cancelled before match
ExpiredTime-limited order expired

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Order Book Mechanics

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Price-Time Priority

Orders match based on:
  1. Best rate first: Orders offering better rates match first
  2. Time priority: Among equal rates, earlier orders match first

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Example

Your order: Lend 10,000 USDC at 8.0% for 90 days

Order Book (Borrow orders):
  1. 5,000 USDC at 7.5% ← Won't match (below your rate)
  2. 8,000 USDC at 8.0% ← Matches (you get 8,000)
  3. 5,000 USDC at 8.2% ← Matches (you get remaining 2,000)

Result: Fully matched at blended ~8.04% APY

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Partial Fills

Large orders may match with multiple counterparties: 
Your order: 100,000 USDC at 8.0%

Matches:
  - 30,000 USDC matched immediately
  - 70,000 USDC remains in order book

You receive:
  - CBT for the 30,000 matched portion
  - Order continues for remaining 70,000

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Managing Pending Orders

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View Orders

Dashboard shows all pending orders with:
  • Amount and rate
  • Time in queue
  • Estimated fill time

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Modify Orders

Before matching, you can:
  • Change rate: Adjust up or down
  • Change amount: Increase or decrease
  • Cancel: Remove from book entirely

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Cancel Orders

Cancellation is:
  • Free: No gas or protocol fees
  • Instant: Funds available immediately
  • Partial: Can cancel portion of order

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Active Positions

Once matched, your position shows:
FieldDescription
Position IDUnique identifier
AmountPrincipal lent
RateYour fixed APY
MaturityWhen position matures
CBT BalanceYour CBT tokens
Current ValueCBT × current price
Accrued InterestInterest earned to date
Projected ReturnExpected return at maturity

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CBT Mechanics

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Purchase Price

CBT is purchased at a discount: 
CBT Price = 1 / (1 + Rate × Time)

Example: 8% APY for 1 year
CBT Price = 1 / (1 + 0.08 × 1) = 0.9259
Lend $10,000 → Receive 10,800 CBT
At maturity: 10,800 CBT × $1 = $10,800

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Price Convergence

CBT price increases as maturity approaches: 
Day 0:   CBT = $0.926 (lend day)
Day 90:  CBT = $0.943
Day 180: CBT = $0.962
Day 270: CBT = $0.981
Day 365: CBT = $1.000 (maturity)

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Cross-Chain Deposits

Deposit from any supported chain:
1

Select Source Chain

Choose your current chain (Ethereum, Polygon, etc.)
2

Enter Amount

Specify amount to lend
3

Approve & Sign

Sign cross-chain transaction
4

Wait for Bridge

Assets bridge to Arbitrum (usually 10-30 minutes)
5

Order Placed

Your lend order is placed on Arbitrum

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Yield Router (Idle Capital)

While your order waits for a match:
  1. After brief delay (~5 min), capital deployed to yield protocols
  2. Earns interim yield (Aave, Compound, etc.)
  3. Instantly recalled when order matches
  4. You keep all interim yield

Yield Router Details

Learn more about capital efficiency

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Best Practices

Check Market Rates

Review order book before setting your rate

Consider Maturity Needs

Choose maturity based on when you’ll need funds

Use Rate Laddering

Split across multiple rates for faster fills

Monitor Positions

Track upcoming maturities and plan accordingly

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FAQs

Your rate may be above current market. Check the order book and consider lowering your rate or using Easy Mode.
Each lend order creates a separate position. You can have multiple positions at different rates/maturities.
Borrowers are overcollateralized. If collateral drops, they’re liquidated, your position is unaffected.