# CCIP v1.5.0 API Reference
Source: https://docs.chain.link/ccip/api-reference/evm/v1.5.0

> For the complete documentation index, see [llms.txt](/llms.txt).

> **NOTE: Integrate Chainlink CCIP v1.5.0 into your project**

> **NOTE**
>
> You are viewing API documentation for CCIP v1.5.0. For the latest version (v1.5.1), see the [v1.5.1
> documentation](/ccip/api-reference/evm/v1.5.1).

## API References

### Core Components

- [CCIPReceiver](/ccip/api-reference/evm/v1.5.0/ccip-receiver) - Base contract for receiving CCIP messages
- [Client](/ccip/api-reference/evm/v1.5.0/client) - Library providing structs and types for building CCIP messages
- [Internal](/ccip/api-reference/evm/v1.5.0/internal) - Library providing internal data structures and utilities for cross-chain message processing
- [IRouterClient](/ccip/api-reference/evm/v1.5.0/i-router-client) - Interface for sending messages through CCIP
- [Pool](/ccip/api-reference/evm/v1.5.0/pool) - Library providing token pool functions for cross-chain operations

### Token Pools

- [TokenPool](/ccip/api-reference/evm/v1.5.0/token-pool) - Base abstract class defining common functionality for all token pools
- [BurnMintTokenPoolAbstract](/ccip/api-reference/evm/v1.5.0/burn-mint-token-pool-abstract) - Abstract contract for burn/mint token handling
- [BurnMintTokenPool](/ccip/api-reference/evm/v1.5.0/burn-mint-token-pool) - Implementation using `burn(amount)` for token burning
- [BurnFromMintTokenPool](/ccip/api-reference/evm/v1.5.0/burn-from-mint-token-pool) - Implementation using `burnFrom(address, amount)` for token burning
- [LockReleaseTokenPool](/ccip/api-reference/evm/v1.5.0/lock-release-token-pool) - Implementation for locking and releasing tokens on their native chain

### Registry Components

- [TokenAdminRegistry](/ccip/api-reference/evm/v1.5.0/token-admin-registry) - Contract for storing token pool configurations
- [RegistryModuleOwnerCustom](/ccip/api-reference/evm/v1.5.0/registry-module-owner-custom) - Registry module for token admin registration

### Events and Error Handling

- [Events](/ccip/api-reference/evm/v1.5.0/events) - Events emitted during CCIP operations including `ccipSend` and `ccipReceive`
- [Errors](/ccip/api-reference/evm/v1.5.0/errors) - Comprehensive list of CCIP error codes and their descriptions