torch-liquidation-bot

Autonomous vault-based liquidation keeper for Torch Market lending on Solana. Scans all migrated tokens for underwater loan positions (LTV > 65%) using the SDK's built-in bulk loan scanner (getAllLoanPositions), builds and executes liquidation transactions through a Torch Vault, and collects a 10% collateral bonus. The agent keypair is generated in-process -- disposable, holds nothing of value. All SOL and collateral tokens route through the vault. The human principal creates the vault, funds it, links the agent, and retains full control. Built on torchsdk v3.7.22 and the Torch Market protocol.

# Torch Liquidation Bot

You're here because you want to run a liquidation keeper on Torch Market -- and you want to do it safely.

Every migrated token on Torch has a built-in lending market. Holders lock tokens as collateral and borrow SOL from the community treasury (up to 50% LTV, 2% weekly interest). When a loan's LTV crosses 65%, it becomes liquidatable. Anyone can liquidate it and collect a **10% bonus** on the collateral value.

That's where this bot comes in.

It scans every migrated token's lending market using the SDK's bulk loan scanner (`getAllLoanPositions`) -- one RPC call per token returns all active positions pre-sorted by health. When it finds one that's underwater, it liquidates it through your vault. The collateral tokens go to your vault ATA. The SOL cost comes from your vault. The agent wallet that signs the transaction holds nothing.

**This is not a read-only scanner.** This is a fully operational keeper that generates its own keypair, verifies vault linkage, and executes liquidation transactions autonomously in a continuous loop.

---

## How It Works

```
┌──────────────────────────────────────────────────────────┐
│                  LIQUIDATION LOOP                          │
│                                                           │
│  1. Discover migrated tokens (getTokens)                  │
│  2. For each token, scan all loans (getAllLoanPositions)   │
│     — single RPC call, returns positions sorted by health │
│     — liquidatable → at_risk → healthy                    │
│  3. Skip tokens with no active loans                      │
│  4. For each liquidatable position:                       │
│     → buildLiquidateTransaction(vault=creator)            │
│     → sign with agent keypair                             │
│     → submit and confirm                                  │
│     → break when health != 'liquidatable' (pre-sorted)    │
│  5. Sleep SCAN_INTERVAL_MS, repeat                        │
│                                                           │
│  All SOL comes from vault. All collateral goes to vault.  │
│  Agent wallet holds nothing. Vault is the boundary.       │
└──────────────────────────────────────────────────────────┘
```

### The Agent Keypair

The bot generates a fresh `Keypair` in-process on every startup. No private key file. No environment variable (unless you want to provide one). The keypair is disposable -- it signs transactions but holds nothing of value.

On first run, the bot checks if this keypair is linked to your vault. If not, it prints the exact SDK call you need to link it:

```
--- ACTION REQUIRED ---
agent wallet is NOT linked to the vault.
link it by running (from your authority wallet):

  buildLinkWalletTransaction(connection, {
    authority: "<your-authority-pubkey>",
    vault_creator: "<your-vault-creator>",
    wallet_to_link: "<agent-pubkey>"
  })

then restart the bot.
-----------------------
```

Link it from your authority wallet (hardware wallet, multisig, whatever you use). The agent never needs the authority's key. The authority never needs the agent's key. They share a vault, not keys.

### The Vault

This is the same Torch Vault from the full Torch Market protocol. It holds all assets -- SOL and tokens. The agent is a disposable controller.

When the bot liquidates a position:
- **SOL cost** comes from the vault (the liquidation payment to cover the borrower's debt)
- **Collateral tokens** go to the vault's associated token account (ATA)
- **10% bonus** means the collateral received is worth 10% more than the SOL spent

The human principal retains full control:
- `withdrawVault()` — pull SOL at any time
- `withdrawTokens(mint)` — pull collateral tokens at any time
- `unlinkWallet(agent)` — revoke agent access instantly

If the agent keypair is compromised, the attacker gets dust and vault access that you revoke in one transaction.

---

## Getting Started

### 1. Install

```bash
npm install torch-liquidation-bot@4.0.2
```

Or use the bundled source from ClawHub — the Torch SDK is included in `lib/torchsdk/` and the bot source is in `lib/kit/`.

### 2. Create and Fund a Vault (Human Principal)

From your authority wallet:

```typescript
import { Connection } from "@solana/web3.js";
import {
  buildCreateVaultTransaction,
  buildDepositVaultTransaction,
} from "./lib/torchsdk/index.js";

const connection = new Connection(process.env.SOLANA_RPC_URL);

// Create vault
const { transaction: createTx } = await buildCreateVaultTransaction(connection, {
  creator: authorityPubkey,
});
// sign and submit with authority wallet...

// Fund vault with SOL for liquidations
const { transaction: depositTx } = await buildDepositVaultTransaction(connection, {
  depositor: authorityPubkey,
  vault_creator: authorityPubkey,
  amount_sol: 5_000_000_000, // 5 SOL
});
// sign and submit with authority wallet...
```

### 3. Run the Bot

```bash
VAULT_CREATOR=<your-vault-creator-pubkey> SOLANA_RPC_URL=<rpc-url> npx torch-liquidation-bot
```

On first run, the bot prints the agent keypair and instructions to link it. Link it from your authority wallet, then restart.

### 4. Configuration

| Variable | Required | Default | Description |
|----------|----------|---------|-------------|
| `SOLANA_RPC_URL` | **Yes** | -- | Solana RPC endpoint (HTTPS). Fallback: `RPC_URL` |
| `VAULT_CREATOR` | **Yes** | -- | Vault creator pubkey |
| `SOLANA_PRIVATE_KEY` | No | -- | Disposable controller keypair (base58 or JSON byte array). If omitted, generates fresh keypair on startup (recommended) |
| `SCAN_INTERVAL_MS` | No | `30000` | Milliseconds between scan cycles (min 5000) |
| `LOG_LEVEL` | No | `info` | `debug`, `info`, `warn`, `error` |

---

## Architecture

```
packages/bot/src/
├── index.ts    — entry point: keypair generation, vault verification, scan loop
├── config.ts   — loadConfig(): validates SOLANA_RPC_URL, VAULT_CREATOR, SOLANA_PRIVATE_KEY, SCAN_INTERVAL_MS, LOG_LEVEL
├── types.ts    — BotConfig, LogLevel interfaces
└── utils.ts    — sol(), bpsToPercent(), withTimeout(), createLogger()
```

The bot is ~192 lines of TypeScript. It does one thing: find underwater loans and liquidate them through the vault.

### Dependencies

| Package | Version | Purpose |
|---------|---------|---------|
| `@solana/web3.js` | 1.98.4 | Solana RPC, keypair, transaction |
| `torchsdk` | 3.7.22 | Token queries, bulk loan scanning, liquidation builder, vault queries |

Two runtime dependencies. Both pinned to exact versions. No `^` or `~` ranges.

---

## Vault Safety Model

The same seven guarantees from the Torch Market vault apply here:

| Property | Guarantee |
|----------|-----------|
| **Full custody** | Vault holds all SOL and all collateral tokens. Agent wallet holds nothing. |
| **Closed loop** | Liquidation SOL comes from vault, collateral tokens go to vault. No leakage to agent. |
| **Authority separation** | Creator (immutable PDA seed) vs Authority (transferable admin) vs Controller (disposable signer). |
| **One link per wallet** | Agent can only belong to one vault. PDA uniqueness enforces this on-chain. |
| **Permissionless deposits** | Anyone can top up the vault. Hardware wallet deposits, agent liquidates. |
| **Instant revocation** | Authority can unlink the agent at any time. One transaction. |
| **Authority-only withdrawals** | Only the vault authority can withdraw SOL or tokens. The agent cannot extract value. |

### The Closed Economic Loop for Liquidations

| Direction | Flow |
|-----------|------|
| **SOL out** | Vault → Borrower's treasury debt (covers the loan) |
| **Tokens in** | Borrower's collateral → Vault ATA (at 10% discount) |
| **Net** | Vault receives collateral worth 110% of SOL spent |

The bot is profitable by design — every successful liquidation returns more value than it costs. The profit accumulates in the vault. The authority withdraws when ready.

---

## Lending Parameters

| Parameter | Value |
|-----------|-------|
| Max LTV | 50% |
| Liquidation Threshold |