Trayce - Fast, open-source API client and Docker network monitor

What it does

Trayce is a developer tool that combines a high-performance API client with a zero-configuration Docker network monitor. The API client supports HTTP, REST, GraphQL, scripting with JavaScript, authentication, secret management, and works with Bruno-compatible collections stored in a git-friendly file format. The network monitor uses eBPF to intercept traffic from local Docker containers, supporting HTTP, HTTPS, gRPC, MySQL, PostgreSQL, and TLS-encrypted traffic without needing a proxy or CA certificate.

Who it is for

Trayce is designed for backend developers, QA engineers, and testers who need to inspect network traffic in local Docker containers or work with API collections. It is explicitly not intended for production monitoring. The tool is free and open source, with no paid versions, and operates offline-only with no account sign-up required.

Why it matters

Trayce addresses two pain points: slow Electron-based API clients and complex Docker network monitoring. Its GUI is built without browser-rendered graphics, offering a fast, lightweight desktop-like experience. The network monitor requires zero configuration—just run the TrayceAgent container alongside your existing containers. By using eBPF, it can monitor encrypted traffic without manual setup. The API client is interoperable with Bruno, allowing users to switch between tools without losing work.

Launch signal

Trayce was launched on Hacker News as "Show HN: Trayce – Burp Suite for developers" (source: trayce.dev). The tagline positions it as a security-oriented tool for developers, though the current feature set focuses on API client and network monitoring rather than active security testing.

Brand and naming

The name "Trayce" suggests tracing or tracking network traffic, which aligns with its core function of monitoring Docker container traffic. The tagline "Burp Suite for developers" positions it as a simpler, developer-friendly alternative to the popular security testing tool. The branding emphasizes speed, openness, and offline-first philosophy.