> For the complete documentation index, see [llms.txt](https://docs.fira.money/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.fira.money/developers/protocol-contracts/core/fira-market-factory.md).

# FiraMarketFactory

{% hint style="info" %}
**Source:** `src/fira_bonding/core/Market/v3/FiraMarketFactory.sol`
{% endhint %}

## Contract summary

Deploys markets using split-code CREATE2 (because `FiraMarket` exceeds the 24KB EVM contract size limit). Markets are keyed by `BT + scalarRoot + initialAnchor + lnFeeRateRoot` — creating the same combination twice reverts.

## Functionality

### Market creation

The factory validates that the BT comes from the registered `YieldContractFactory` and is not expired, then deploys the market using the split-code pattern (bytecode is split across two storage contracts and concatenated at deploy time).

### Fee management

The factory stores:

* **Treasury address** — Receives reserve fees from swaps
* **Reserve fee percent** — Portion of swap fees sent to treasury
* **Router-specific fee overrides** — Must be strictly less than the market's base fee

`getMarketConfig(market, router)` is called by the market on every `readState` to load treasury, fee overrides, and reserve percent. This means fee changes take effect on the next trade without redeployment.

### Duplicate prevention

Markets are uniquely identified by their BT address and curve parameters. Attempting to create a duplicate reverts.


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docs.fira.money/developers/protocol-contracts/core/fira-market-factory.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.