> ## Documentation Index
> Fetch the complete documentation index at: https://digraphsas-docs-mcp-delta-orders.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Supported chains and contract addresses

> Canonical reference for Augustus, Delta, Portikus, AugustusRFQ, and Fee Claimer contract addresses across every supported EVM chain.

This page is the single source of truth for contract addresses across Velora's stack. Every other page links here rather than inlining addresses, with one exception: failure-mode rows on API reference pages may cite a specific deployed address inline when the address is the actual diagnostic.

<Tip>
  Building integrations that need addresses at runtime? Read [`/resources/contracts.json`](/resources/contracts.json) — it mirrors the table on this page in machine-readable form, keyed by `chainId`.
</Tip>

## Supported chains

Velora supports the following EVM networks. Each chain has Augustus v6.2 (Market routing) deployed; Delta availability is a subset.

* Ethereum (1)
* Optimism (10)
* BNB Chain (56)
* Gnosis (100)
* Unichain (130)
* Polygon (137)
* Base (8453)
* Arbitrum One (42161)
* Avalanche (43114)

The authoritative supported-chain list is queryable at runtime via `GET /chains` on the Market API. Code should treat this page as a human-readable index and `/chains` as the runtime source of truth.

## Addresses by chain

Each contract is also the ERC-20 spender for its execution mode — approve Augustus v6.2 for Market swaps, the Delta contract for Delta orders (Swap, Limit, TWAP), and AugustusRFQ for OTC/RFQ fills. A `—` means the contract isn't deployed on that chain and the corresponding mode is unavailable there. See [Token approvals for agents](/for-agents/token-approvals) for the spender-by-mode decision rules.

**Augustus v6.2** is deployed at `0x6a000f20005980200259b80c5102003040001068` on every supported chain. **Delta** is deployed at `0x0000000000bbf5c5fd284e657f01bd000933c96d` and **Delta Wrapped Native (dETH)** at `0x0a0d53b6684c7b32b4cbef5fe8483bfcc8406742`, both at the same address on every Delta-enabled chain. **Fee Claimer** is deployed at `0x00700052c0608F670705380a4900e0a8080010CC` on every supported chain. AugustusRFQ addresses vary per chain and are listed below.

| Chain (ID)           | Delta | AugustusRFQ                                  |
| -------------------- | ----- | -------------------------------------------- |
| Ethereum (1)         | ✓     | `0xe92b586627ccA7a83dC919cc7127196d70f55a06` |
| Optimism (10)        | ✓     | `0x0927FD43a7a87E3E8b81Df2c44B03C4756849F6D` |
| BNB Chain (56)       | ✓     | `0x8DcDfe88EF0351f27437284D0710cD65b20288bb` |
| Gnosis (100)         | —     | `0x92EaD5bACf6F0E995FA46Ad8215A9b11f67ca241` |
| Unichain (130)       | ✓     | `0x92EaD5bACf6F0E995FA46Ad8215A9b11f67ca241` |
| Polygon (137)        | ✓     | `0xF3CD476C3C4D3Ac5cA2724767f269070CA09A043` |
| Base (8453)          | ✓     | `0xa003dFBA51C9e1e56C67ae445b852bdEd7aC5EEd` |
| Arbitrum One (42161) | ✓     | `0x0927FD43a7a87E3E8b81Df2c44B03C4756849F6D` |
| Avalanche (43114)    | —     | `0x34302c4267d0dA0A8c65510282Cc22E9e39df51f` |

## Contracts

### Augustus v6.2

The Market router. All Market [`POST /transactions/:chainId`](/api-reference/market/transactions) calldata targets the Augustus v6.2 contract on the requested chain. Deployed at the same address across every supported chain.

### Augustus v6.1, v5

Legacy router versions. Still operational but new integrations should target v6.2. Calldata returned by the Market API automatically uses v6.2 unless overridden. Migration: [Augustus v5 → v6.2](/resources/migrations/augustus-v5-to-v6-2).

### Delta contract

On-chain entry point that validates signed Delta orders and executes the winning Portikus fill through settlement. The Delta contract is the spender on EIP-712 typed-data approvals: token approvals for Delta flows must be granted to this address, **not** to Augustus. Deployed at the same address across every Delta-enabled chain.

### Delta Wrapped Native (dETH)

The wrapped-native token Delta uses to represent native ETH (and other native gas tokens) as an ERC-20, at a 1:1 rate. When a user sells native ETH through Delta, their ETH is represented as dETH, which is why a native source needs no ERC-20 approval. Deployed alongside the Delta contract at the same address on every Delta-enabled chain, so native ETH works as a source wherever Delta does. See [Native ETH (dETH)](/delta/native-eth) for the integration detail.

### Portikus settlement

The solver-facing settlement infrastructure. Solvers compete by providing fills through Portikus; the Delta contract reconciles the winning outcome back to the user.

### AugustusRFQ

On-chain OTC and RFQ settlement contract. Supports partial fills and bilateral signed orders. Market makers settle their firm quotes through it; see [Market making on Velora](/resources/market-makers).

### Fee Claimer

Holds partner fees accrued from Market swaps until the partner claims them. Fees taken via `partnerAddress` accumulate in this contract per chain, and partners withdraw them through the [Fee Claimer app](https://velora.xyz/fee_claimer). Delta fees never pass through it; they accrue in the Delta contract itself. Deployed at the same address on every supported chain. See [Monetization](/overview/monetization) for fee parameters and the claim flow.

## Related

* [Market API → Overview](/api-reference/market/overview)
* [Delta → How it works](/delta/how-it-works)
* [Security → Audits](/resources/security/audits)
* Machine-readable: [`/resources/contracts.json`](/resources/contracts.json)