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Go configuration with fangs

Simple, extremely lightweight, extensible, configuration management library for Go. Supports JSON, TOML, YAML, env, command line, file, S3 etc. Alternative to viper.

• configuration
• configuration-management
• configuration-file
• golang

Define a Go struct. Get a CLI that an agent can discover, call, sandbox, and debug. Flags, env vars, config files, validation, JSON Schema, MCP, structured errors, and WASM. Built on Cobra.

• cli
• cobra
• flags
• viper

🛠 Viper wrapper with config inheritance and key generation