Hyperdrive

Hyperdrive is an automated market maker that enables fixed-rate markets to be built on top of arbitrary yield sources. Hyperdrive provides several novel features for fixed-rate AMMs including:

• Terms on Demand: Hyperdrive allows for minting to be a part of the AMM, where the AMM essentially underwrites a new term for the user whenever they open a position. The user is not constrained to purchasing, selling, or minting into preexisting terms that are partially matured.
• Continuous Liquidity: Hyperdrive pools never expire and underwrite a variety of fixed and variable rate terms with differing maturity dates. LPs can provide liquidity once without needing to roll their liquidity over to new terms.
• Single-Sided Liquidity: Hyperdrive liquidity providers are only required to provide base assets. The fact that LPs don't need to mint bonds to provide liquidity improves the capital efficiency and UX of providing liquidity to fixed-rate markets.

Deployed Contracts

The addresses for all of the DELV approved deployed Hyperdrive contracts can be found here.

Resources

The Hyperdrive docs include documentation on how to use Hyperdrive to source and provide liquidity, documentation for developers seeking to use Hyperdrive programatically, and documentation for developers that want to integrate Hyperdrive with a yield source.

The Hyperdrive Whitepaper describes the technical details underlying how Hyperdrive mints terms on demand, enables LPs to provide everlasting liquidity, and explains how the AMM's pricing model works.

The audits/ directory contains the reports for all of the audits that have been conducted for Hyperdrive to date.

Repository Layout

The Hyperdrive interface can be found in IHyperdrive.sol. This interface includes all of the read and write functions available on each Hyperdrive instance as well as the events emitted by Hyperdrive and the custom errors used by Hyperdrive.

The existing Hyperdrive instances can be found in contracts/src/instances/. These instances can serve as a reference for integrators that would like to integrate a yield source with Hyperdrive. The ERC4626Hyperdrive instance found in contracts/src/instances/erc4626/ can be used to integrate ERC4626 compliant yield sources. For yield sources that require direct integrations, the other instances can serve as a reference for how integrations are structured.

Because of the code size limits imposed by EIP-170, Hyperdrive's logic is sharded over several different contracts. The code that supports the proxy architecture can be found in contracts/src/external. These contracts are abstract since several functions must be implemented on a case-by-case basis for different yield sources.

The core logic used in the Hyperdrive AMM can be found in contracts/src/internal/. This logic relies on libraries that can be found in contracts/src/libraries/.

The HyperdriveFactory contract can be found in HyperdriveFactory.sol. This contract makes it easy to deploy and initialize new pools. The factory utilizes deployer coordinators that correspond to Hyperdrive instances. These deployer coordinators and the deployer contracts used by the coordinators can be found in contracts/src/deployers/.

Getting Started

Pre-requisites

This repository makes use of foundry to build and test the smart contracts and uses several node.js packages to lint and prettify the source code. Proceed through the following steps to set up the repository:

• Install forge
• Install yarn
• Install lib/forge-std dependencies by running forge install from the project root
• Install node.js dependencies by running yarn from the project root
• Install pypechain by running pip install pypechain from the project root (we recommend using a virtual environment with python 3.10)

Environment Variables

The test suite and migration scripts make use of several environment variables. Copy .env_template to .env and populate the file with your private key and provider URLs.

Build

To build the smart contracts, run:

make build

Test

To test the smart contracts, run:

make test

Lint

We have several linters. Solhint is a Solidity linter that checks for best practices and style, prettier is a Solidity formatter that checks for formatting and style, and cSpell is a spell checker. To run all three, run:

make lint

If you want to automatically format the code, run:

make prettier

Deploy

To deploy the smart contracts, run:

NETWORK=<hardhat|anvil|sepolia|mainnet> make deploy

To deploy the smart contracts to a mainnet fork environment:

1. Add the contract deploy configuration(s) to tasks/deploy/config/mainnet/. Make sure to import the configuration objects in tasks/deploy/config/mainnet/index.ts.

2. Update hardhat.config.mainnet_fork.ts to include the new deployment configurations.

3. In one terminal, start a local anvil fork instance:

   anvil --fork-url <your_mainnet_rpc_url>

4. In another terminal, bootstrap the mainnet_fork network's deployments in deployments.local.json with the mainnet contract addresses.

   ./scripts/bootstrap-fork.sh

5. Deploy any new contracts present in hardhat.config.mainnet_fork.ts that have not already been deployed on mainnet.

   NETWORK=mainnet_fork ADMIN=<your_deployer_address> ./scripts/deploy-fork.sh

To update the remote fork with these changes, first create a pull request and obtain the latest version for the devnet image. The changes will be reflected automatically after updating the remote fork's devnet image version and restarting the containers.

Generate Deploy Configurations

Factory, coordinator, and instance deploy configurations can be generated via templates.

To get started, create a new variable file from the sample by running:

cp \
  tasks/deploy/config/<factory|coordinator|instance>.sample.env \
  <factory|coordinator|instance>.env

Next, set values for each of the fields in the file <factory|coordinator|instance>.env. Sample values are provided as examples, but should be overwritten.

Finally, to generate the configuration files run:

make generate-deploy

The above command will output next steps to integrate the new configuration files with existing configuration.

Disclaimer

The language used in this code and documentation is not intended to, and does not, have any particular financial, legal, or regulatory significance.

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Copyright © 2024 DELV

Licensed under the Apache License, Version 2.0 (the "OSS License").

By accessing or using this code, you signify that you have read, understand and agree to be bound by and to comply with the OSS License and DELV's Terms of Service. If you do not agree to those terms, you are prohibited from accessing or using this code.

Unless required by applicable law or agreed to in writing, software distributed under the OSS License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the OSS License and the DELV Terms of Service for the specific language governing permissions and limitations.