Relayer is an open-source project facilitating communications between IBC-enabled blockchains. Acting as a vital conduit, it monitors open paths between chains, submitting specific message types to counterparties to ensure seamless inter-chain data exchanges. The relayer is capable of not only relaying packets but also opening paths, thus establishing clients, connections, and channels across blockchains. It requires Go installation for setup and allows user-specific configurations through customizable memos and chain path adjustments. The tool supports advanced usage scenarios, including manual RPC endpoint configurations, custom keys, and channel filters to specify relay channels. For optimal performance, thorough configuration of chain metadata and path metadata is recommended. Relayer caters to both novice and advanced users by offering detailed documentation and troubleshooting guidance. For security disclosures, users are advised to follow the project’s SECURITY.md. The Cosmos community promotes an inclusive and respectful environment under their Code of Conduct.