Last reviewed July 11, 2026 · Official sources linked below
Short answer
Ledn offers custodial Bitcoin-backed loans with a standard 50% initial LTV, fixed loan periods, and rates tiered by loan size. Stackit.ai is an onchain treasury-policy layer using variable Aave rates. Ledn fits a borrower who wants a serviced BTC-only loan; Stackit.ai fits an operator who wants BTC/ETH treasury rules and machine integrations.
Liquidation protection
You choose when Stackit protects, repays, and takes profit
Stackit.ai is not a fixed one-size-fits-all loan. Compared with using Ledn, you define the treasury policy: the point where protection begins, the conditions for repaying debt, and the conditions for taking profit or routing part of it to the loan. Stackit.ai monitors the approved rules and prepares or executes the permitted actions.
Ledn on its own
The product sets its loan mechanics
Ledn determines its own rates, collateral rules, borrowing limits, and margin or liquidation mechanics.
Any monitoring or protection offered by Ledn remains governed by its current product terms.
You are responsible for understanding the actions required to keep the position in good standing.
Stackit.ai automation
You choose the policy; Stackit monitors it
✓You choose a Protection Point and the safer LTV target the policy should defend.
✓You set when debt should be repaid, how much may be used, and which approved funding source applies.
✓You set profit-taking conditions and whether an approved share of realized profit should reduce loan principal.
✓Stackit.ai continuously evaluates the policy; delegated automation can execute approved actions, while wallet-sovereign flows prepare a transaction for you to sign.
1. Choose when to protect
Set a Protection Point before the underlying liquidation boundary and choose the safer LTV area you want the position returned to when risk rises.
2. Choose when to repay
Define the market, LTV, deposit-consistency, or scheduled conditions that permit a repayment—and the maximum amount the policy may use.
3. Choose when to take profit
Define the recovery or price conditions for taking profit instead of leaving every gain exposed through the next market move.
4. Decide where profit goes
Choose whether an approved share of realized profit pays down principal. Less outstanding debt can reduce both interest exposure and liquidation risk.
5. Keep control of the policy
Delegated automation is permission-scoped and revocable. Without active execution permission, Stackit.ai can prepare the transaction and risk context for your signature.
What protection does—and does not—mean
Automation is designed to reduce risk, not guarantee that liquidation or loss is impossible. Sudden market gaps, oracle problems, network congestion, insufficient liquidity, smart-contract failure, missing permissions, or failed execution can prevent an action from completing in time. Current live onboarding is assisted, and not every described automation is self-serve today.
This compares product structure, not just the lowest advertised APR. Rates, LTVs, eligibility, fees, and market parameters can change.
Dimension
Stackit.ai
Ledn
What it is
A treasury policy and orchestration layer that uses third-party lending markets. You choose when to protect the position, repay debt, and take profits; Stackit.ai monitors the approved policy and prepares or executes the permitted actions. The public product currently includes a self-serve sandbox and live market-rate reads; production access is assisted and the Base production API is marked in development.
A centralized Bitcoin financial-services company offering BTC-backed loans.
Borrow rate
The underlying Aave variable borrow rate is passed through and shown separately from Stackit.ai action fees. Live native-USDC rates are available for Base, Arbitrum, and Polygon.
APR is tiered by loan size and displayed in current product terms.[source ↗]
LTV and downside response
You choose the Protection Point, safer LTV target, repayment conditions, and when profit-taking rules may pay down debt. Stackit.ai monitors LTV and prepares or executes approved actions as risk rises or profit conditions are met. Exact execution depends on the policy, permissions, liquidity, oracle data, gas, and production availability; liquidation risk cannot be eliminated.
Generally 50% initial LTV, with current margin-call and liquidation levels published by Ledn. The borrower adds collateral or repays after warnings; collateral can be sold at the liquidation threshold.[source ↗]
Custody and control
Documented wallet-sovereign flows return unsigned transactions. Delegated automation requires revocable, policy-scoped permission; Stackit.ai says it does not hold private keys.
BTC collateral is held under Ledn's custody model; Ledn says loan collateral is not lent out.
Term
No separate fixed loan term in the public sandbox; the underlying onchain market determines the debt mechanics.
Typically a 12-month loan under current product materials.
Other costs
Aave interest plus published Stackit.ai per-action fees and network/protocol costs. Current fees are itemized in fees.json; protection and repayment actions carry no Stackit.ai fee, though gas and protocol costs can still apply.
APR plus a stated 0.50% trade spread in Ledn's LTV calculation documentation; confirm the final loan agreement and jurisdictional terms.
About the alternative
What Ledn is
Ledn's current product materials describe 12-month Bitcoin-backed loans funded in USD, USDC, or supported local currency, generally beginning at 50% LTV. Rates depend on loan size, and margin-call/liquidation thresholds apply as BTC price changes.
The key distinction
How Stackit.ai differs
Stackit.ai is built around treasury actions and policies rather than a single BTC-collateral loan contract. It also exposes Aave rates and sandbox/API paths, but its production execution availability is more limited and assisted today.
Which one fits your use case?
Choose Ledn when…
Borrowers who want a Bitcoin-only, fixed-period loan with bank or stablecoin funding and established lender servicing.
Consider Stackit.ai when…
Teams that want BTC and ETH treasury automation concepts, policy checks, and agent/API workflows built around onchain markets.
Frequently asked questions
Does Ledn support ETH collateral?
The reviewed Ledn loan material is focused on Bitcoin-backed loans. Stackit.ai's treasury positioning includes both BTC and ETH.
Does Ledn use a variable Aave rate?
No. Ledn publishes its own loan rate tiers. Stackit.ai's current onchain rate layer uses Aave variable borrow rates.
Which is available now?
Ledn has an active loan product subject to jurisdiction and eligibility. Stackit.ai's public sandbox and live rate reads are available, while production API access is currently assisted/in development.
What does the user control in Stackit.ai's automation?
The user chooses the Protection Point, safer target LTV, repayment conditions, profit-taking conditions, permitted amounts, and approved funding sources. Stackit.ai monitors those rules and can prepare or execute permitted actions according to the active permission model. Automation reduces risk but cannot guarantee against liquidation, loss, or failed execution.
Sources and methodology
Competitor facts come from official product or protocol documentation. Stackit.ai facts come from its public docs, endpoints, and current availability switch. Marketing rates are not treated as guaranteed offers. Review your personalized terms before borrowing.
Educational comparison only; not financial, legal, tax, or investment advice. Crypto-backed loans can lose collateral through liquidation, smart-contract failure, oracle error, market gaps, custody failure, or other execution risks.
Compare the operating model, not one headline rate
Start with live protocol rates, add every fee, then test how your LTV behaves before you choose a borrowing path.