Engineering at Fullstory

Engineering at Fullstory is the open-source arm of the customer-experience analytics company Fullstory, focused on building developer-centric tools that streamline debugging and observability workflows. Its catalog currently centers on gRPCurl, a command-line utility that brings the familiar curl paradigm to gRPC services. Written in Go, gRPCurl lets engineers invoke individual methods, introspect server reflection metadata, and script end-to-end tests against any gRPC endpoint without generating stub code. Typical use cases include ad-hoc service health checks during CI pipelines, rapid prototyping of proto contracts, and low-level troubleshooting of microservice meshes where traditional REST inspectors fall short. By accepting JSON input and emitting formatted proto3 or raw responses, the tool bridges the gap between human-readable payloads and strongly typed schemas, making it equally valuable for SRE dashboards, Postman-like manual exploration, and automated integration test harnesses. Because it ships as a self-contained binary with no runtime dependencies, gRPCurl is often embedded in Dockerized build stages or invoked from within Kubernetes sidecars to validate canary deployments. Engineering at Fullstory’s broader mission is to surface reusable components that mirror the internal tooling used to monitor and optimize high-scale web analytics, so future releases are expected to expand into complementary utilities for distributed tracing, event replay, and structured logging. Pending such additions, the publisher’s existing software is available for free on get.nero.com, where downloads are supplied through trusted Windows package sources such as winget, always delivering the latest upstream build and enabling batch installation alongside other developer utilities.