# References (https://docs.axelar.dev/gmp/resources/references)



## Addresses [#addresses]

Gateway, gas service and ITS addresses for every connected chain are on [Chains and contracts](https://docs.axelar.dev/llms.mdx/infrastructure/network/chains-and-contracts/content.md).

## Contracts [#contracts]

| Contract                                                                                                                                                      | Description                                                                                   |
| ------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------- |
| [AxelarGateway](https://github.com/axelarnetwork/axelar-cgp-solidity/blob/main/contracts/AxelarGateway.sol)                                                   | Gateway on consensus EVM chains: `callContract`, `callContractWithToken` and message approval |
| [AxelarAmplifierGateway](https://github.com/axelarnetwork/axelar-gmp-sdk-solidity/blob/main/contracts/gateway/AxelarAmplifierGateway.sol)                     | Gateway on Amplifier EVM chains                                                               |
| [AxelarGasService](https://github.com/axelarnetwork/axelar-cgp-solidity/blob/main/contracts/gas-service/AxelarGasService.sol)                                 | Gas payments, gas top-ups and refunds                                                         |
| [AxelarExecutable](https://github.com/axelarnetwork/axelar-gmp-sdk-solidity/blob/main/contracts/executable/AxelarExecutable.sol)                              | Base contract for receiving messages                                                          |
| [AxelarExpressExecutableWithToken](https://github.com/axelarnetwork/axelar-gmp-sdk-solidity/blob/main/contracts/express/AxelarExpressExecutableWithToken.sol) | Base contract for receiving messages with [Express](https://docs.axelar.dev/llms.mdx/gmp/integrations/evm/express/content.md)            |
| [AxelarValuedExpressExecutable](https://github.com/axelarnetwork/axelar-gmp-sdk-solidity/blob/main/contracts/express/AxelarValuedExpressExecutable.sol)       | Express for messages whose value is computed by the contract                                  |

## Repositories [#repositories]

| Repository                                                                            | Description                                                                       |
| ------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------- |
| [axelar-gmp-sdk-solidity](https://github.com/axelarnetwork/axelar-gmp-sdk-solidity)   | Solidity libraries for GMP: executables, Amplifier gateway, governance, deployers |
| [axelar-cgp-solidity](https://github.com/axelarnetwork/axelar-cgp-solidity)           | Gateway and gas service contracts for consensus EVM chains                        |
| [axelar-amplifier-solana](https://github.com/axelarnetwork/axelar-amplifier-solana)   | Gateway, gas service and ITS programs for Solana                                  |
| [axelar-cgp-sui](https://github.com/axelarnetwork/axelar-cgp-sui)                     | Gateway, gas service and ITS packages for Sui                                     |
| [axelar-amplifier-stellar](https://github.com/axelarnetwork/axelar-amplifier-stellar) | Gateway, gas service and ITS contracts for Stellar                                |
| [axelar-amplifier-xrpl](https://github.com/axelarnetwork/axelar-amplifier-xrpl)       | XRPL integration                                                                  |
| [cgp-spec](https://github.com/axelarnetwork/cgp-spec)                                 | Cross-Chain Gateway Protocol specification                                        |

For every Axelar repository, see [Infrastructure › References](https://docs.axelar.dev/llms.mdx/infrastructure/resources/references/content.md).


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All pages of these docs, as Markdown: https://docs.axelar.dev/llms.txt