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Sonar’s pipeline is strictly read-only and non-custodial — no wallet connection, no private keys, no transaction signing of any kind. 
Stacks Mainnet
└── Zest Protocol v2 (pool-borrow-v2-3, stx-btc-oracle-v1-4)
    └── Hiro API (read-only, no auth)
        └── Sonar backend
            ├── 1. Read on-chain state (collateral, debt, oracle price)
            ├── 2. Compute health factor off-chain
            └── 3. Alert via Telegram (plain-English risk summary)
                └── User notification
The system only ever reads public on-chain state. It cannot move funds, sign transactions, or interact with any wallet. Sonar requires only a Stacks address to monitor.

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Components

Read layer

Clarity contract read-only calls via the Hiro public API. @stacks/transactions handles Clarity encode/decode.

Compute layer

Off-chain health-factor computation, wired live into the dashboard via /api/positions.

Alert layer

A Node service (Telegram bot + monitor) that watches positions and notifies on threshold breach.