Question 1

How does Hermes compare to the Cosmos Go relayer?

Accepted Answer

Hermes is written in Rust, potentially offering better performance and memory safety, while the Go relayer might be easier for Go-centric teams. Hermes also includes more integrated features like chain registry support, but the choice depends on team expertise and specific needs.

Question 2

How to set up Hermes for relaying between two Cosmos chains?

Accepted Answer

Install via Cargo or from source, then use the chain registry integration to generate configurations automatically. The Hermes guide at hermes.informal.systems provides detailed steps, including CLI commands for starting the relayer.

Question 3

What kind of metrics does Hermes expose for Prometheus?

Accepted Answer

Hermes includes telemetry libraries that expose metrics like packet relay counts, latency, error rates, and connection states via a Prometheus endpoint, helping monitor relayer health and performance.

Question 4

Can I use Hermes as a library in my own Rust application?

Accepted Answer

Yes, the ibc-relayer crate provides a library implementation, allowing programmatic integration for custom IBC logic, such as building automated cross-chain dApps or infrastructure tools.

Question 5

Is there a web dashboard or GUI for Hermes?

Accepted Answer

No, Hermes relies on CLI interaction and REST API endpoints for management; for visual dashboards, you need to integrate the Prometheus metrics with tools like Grafana.

Question 6

How to handle errors or downtime with Hermes?

Accepted Answer

Use the REST API to inspect the relayer's internal state, check logs, and monitor metrics. The GitHub issue tracker is recommended for reporting problems, as per the support section.

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