fx is a powerful terminal-based tool for viewing and processing JSON, YAML, and TOML data with an intuitive interactive interface. Whether you're debugging APIs, analyzing configuration files, or transforming data, fx brings a modern approach to terminal data exploration.

Key capabilities include:

Interactive TUI viewer – Navigate and explore structured data visually in your terminal with an intuitive interface
JavaScript-based processing – Write familiar JavaScript expressions instead of learning a specialized syntax
Streaming support – Handle JSON per line, newline-separated JSON, and other streaming formats efficiently
Big integer precision – Work with large numbers without losing accuracy
JSON comments – Process JSON files with comments and trailing commas
Terminal autocompletion – Get intelligent suggestions in bash, zsh, or fish shells
Smart string handling – Wraps long strings or opens large text in a dedicated viewer
Multi-format support – Works seamlessly with JSON, YAML, and TOML files

Built in Go and distributed as a single self-contained binary, fx requires no dependencies and installs instantly. Perfect for developers, DevOps engineers, and anyone working with structured data in the terminal.