# Coltra

> Your Collateral. Your Control. Building the intelligence layer for onchain lending.

Coltra helps people understand, plan and watch collateralized lending positions on Robinhood Chain (chain id 4663). It values a wallet's tokens at live prices (ETH from the Chainlink ETH/USD feed on the chain, other tokens from a lending protocol's public API), lists the live lending markets on the chain with their liquidation LTV, size and utilization, simulates a loan (health factor, LTV, liquidation price per asset, price-shock scenarios, add-collateral and repay what-ifs), checks alert thresholds in the browser, and lets a wallet save a position plan on chain. It never holds funds, never lends or borrows, and is not financial advice. A lending workspace (deposit, borrow, repay, withdraw) is planned only.

## Pages
- https://coltra.xyz/markets: live lending markets on Robinhood Chain
- https://coltra.xyz/simulate: loan simulator
- https://coltra.xyz/account: collateral dashboard (connected wallet, read-only)
- https://coltra.xyz/alerts: position alerts (browser)
- https://coltra.xyz/plans: plan book (on chain)
- https://coltra.xyz/assistant: AI risk assistant (optional, explanations only)
- https://coltra.xyz/contracts.json: chain, address and ABI

## Contract
- ColtraPlanBook: 0x8371581d17abbcac69e48d34b5d60623fefab1ff
- savePlan(string json) -> planId; updatePlan(uint256 planId, string json) -> version; retirePlan(uint256 planId)
- reads: getPlan(id), plans(fromId, limit), plansOf(owner, offset, limit), versionBlocks(planId, offset, limit), matchesCurrent(planId, json)
- event PlanSaved(planId, owner, version, contentHash, json, chainBlock); contentHash = keccak256(json); no owner, no fees, never holds funds

## Token
- $COLTRA: not launched yet. Community token with no promised value. Analytics credits, premium alerts, API access and service fees are planned, not live.