bytedance/go-tagexpr

Health v2 · maintenance only

Flags: archived

Adoption not part of the score

1727 stars · 139 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded

go-tagexpr is a Go library that implements an expression syntax evaluated via struct tags, enabling declarative field validation and value evaluation. It includes a powerful struct-tag-based validator and an HTTP request parameter binder built on the same expression engine.

Use cases

• validate struct fields with expressive rules in go struct tags
• bind and validate http request parameters in go
• evaluate expressions against nested struct fields
• write custom validation rules referencing other fields in a struct
• replace go-playground validator with a tag expression dsl

When to choose

• you need cross-field or conditional validation logic expressed directly in struct tags
• you want a single library for both validation and http parameter binding in go
• you need to evaluate custom expressions over struct data at runtime

When to avoid

• you only need simple required/type checks that standard validators cover
• your project is not written in go
• you prefer validation rules defined in code rather than struct tags

Facets

library · maturity stable

form-handling serialization parser developer-tools developer-tools web-development backend apis go cross-platform struct-tags expression-language dsl field-validation request-binding validator

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