# Introduction

Permissionless limit orders on Flare-family networks. Works on Uniswap V3-compatible DEXes (Enosys V3, SparkDEX V3.1) AND Algebra V1.9+ DEXes (SparkDEX V4) via two sibling contracts. Place a single order, walk away; when the market crosses your price, anyone can close the position and earn a share of the fees.

## What's different

* **No off-chain keeper network.** Orders are fillable by any wallet. If you can afford the gas, you can be an executor.
* **No custodian.** The limit-order contract only holds your concentrated-liquidity NFT between order-open and order-close. Principal always returns to the order owner.
* **No operator dependency for claims.** FTSO delegation rewards route directly from Enosys to the order owner — never through an operator you have to trust. (Algebra DEXes don't ship FTSO redistributors today, so SparkDEX V4 orders earn LP fees only — no FTSO rewards.)
* **One UI for multiple DEX families.** The frontend's DEX picker exposes V3 and Algebra DEXes side-by-side. You pick a pool; the right contract handles the order automatically.

## Where to start

* **Using the app**: head to [What Are Limit Orders?](https://thanasdefitools.gitbook.io/thanasdefitools-docs/for-users/what-are-limit-orders) and follow through to [Placing an Order](https://thanasdefitools.gitbook.io/thanasdefitools-docs/for-users/placing-an-order).
* **Running an executor bot**: [Executor Bot Guide](https://thanasdefitools.gitbook.io/thanasdefitools-docs/for-developers/executor-bot-guide) walks through the profit math and the minimum code. Note: bots scanning for opportunities across all DEXes need to watch BOTH LOM contracts (V3 and Algebra) on chains where both are deployed.
* **Integrating the contract**: [Architecture](https://thanasdefitools.gitbook.io/thanasdefitools-docs/for-developers/architecture) and [Contract Reference](https://thanasdefitools.gitbook.io/thanasdefitools-docs/for-developers/contract-reference) explain the state machine, the external surface, and the V3-vs-Algebra differences.

## Supported networks

| Chain     | Chain ID      | V3 LOM                                           | Algebra LOM                                      |
| --------- | ------------- | ------------------------------------------------ | ------------------------------------------------ |
| **Flare** | **14**        | **`0x8F47C678F3c5507588F95bc74eF2d53930771f9E`** | **`0x720994B72013d8AdEda9409281c77006c260987E`** |
| Songbird  | 19            | `0x8F47C678F3c5507588F95bc74eF2d53930771f9E`     | n/a (no Algebra DEX on Songbird)                 |
| Coston2   | 114 (testnet) | `0x7ee5339424d7BE7abA0d458581e5B6DfEa07b781`     | n/a (no Algebra DEX on Coston2)                  |

Up-to-date addresses and ABIs always in [Deployments](https://thanasdefitools.gitbook.io/thanasdefitools-docs/for-developers/deployments).

## Source

All contracts, scripts, and this documentation are in the public repository: <https://github.com/Thanasimos/Limit-Orders>.


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