# antonholmquist/jason

Easy-to-use JSON Library for Go

Repository: https://github.com/antonholmquist/jason
Canonical: https://ross.abutalabs.com/products/antonholmquist-jason
Homepage: http://godoc.org/github.com/antonholmquist/jason
Language: Go
License: MIT
License Family: permissive
Last push: 2019-02-13T01:16:29+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 4292, "days_push": 2759, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1132, forks 64 (observed 2026-08-28T04:03:42.651102+00:00)

## What it is
Jason is an easy-to-use Go library for reading arbitrary JSON without defining structs. It provides convenient typed getters for nested values while validating types and paths.

## Use cases
- parse arbitrary  in go without structs
- read nested  values by key path
- extract fields from an http response body
- get strings ints and arrays from dynamic
- validate  structure while reading values

## When to choose
- you need to read JSON whose schema is unknown at compile time
- you want simple typed accessors instead of defining Go structs
- you only need to read JSON, not generate it

## When to avoid
- you need to serialize or create JSON output
- you have well-defined schemas and prefer encoding/ structs
- you need an actively maintained library with recent updates

## Facets
- artifact type: library
- maturity: maintenance
- function: serialization, parser
- domain: developer-tools, apis, files
- platform: go
- tags: dynamic-, read-only

## Member repositories
- antonholmquist/jason (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:42.651102+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T06:37:56.308093+00:00, confidence not recorded.
  - readme: https://github.com/antonholmquist/jason (fetched 2026-08-28T04:03:42.651102+00:00, sha 855b00a069b6)
  - homepage: http://godoc.org/github.com/antonholmquist/jason (fetched 2026-08-29T12:42:15.158415+00:00, sha 206deec2cccd)
  - site_page: https://pkg.go.dev/about (fetched 2026-08-29T12:42:15.163227+00:00, sha 757852027879)
  - site_page: https://pkg.go.dev/github.com/antonholmquist/jason (fetched 2026-08-29T12:42:15.161306+00:00, sha b759da659c6a)
  - site_page: https://go.dev/project (fetched 2026-08-29T12:42:15.164919+00:00, sha d5ca00bb378b)
- Data as of 2026-08-30T08:39:29.467469+00:00.