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rxi/sj.h

Some data may be outdated — see provenance labels.

A tiny little JSON parsing library observed · 2026-09-27

github.com/rxi/sj.h · C · Unlicense (permissive) observed · 2026-09-27

Health v2 · maintenance only

34/100

  • Activity 35
  • Release rhythm 35
  • Longevity 28

Flags: no_releases

How is this computed?

round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-10-21. Adoption (stars, forks) is never an input.

  • gap_med: n/a
  • age_days: 396
  • days_rel: n/a
  • days_push: 394
  • n_releases_24m: 0

Full methodology

Adoption not part of the score

1549 stars · 46 forks observed · 2026-09-27

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

sj.h is a tiny ~150-line C99 JSON parsing library distributed as a single header. It performs zero-allocation, streaming-style parsing and leaves number and string decoding to the user.

Use cases

  • parse in c with no dependencies
  • embed a minimal parser in an embedded project
  • read config files without dynamic allocation
  • extract fields from strings in c99
  • handle parsing errors with line and column info

When to choose

  • you need a tiny, dependency-free JSON parser in C
  • you want full control over number and string decoding
  • you cannot use dynamic memory allocation
  • you want a public-domain licensed parser

When to avoid

  • you need automatic number parsing or unicode surrogate handling
  • you need JSON serialization/writing, not just parsing
  • you want a full-featured JSON library with DOM building

Facets

library · maturity stable

parser serialization developer-tools parsers developer-tools files c cross-platform embedded single-header zero-allocation -parser public-domain minimalist

1 source

Member repositories

RepositoryRoleHealth v2
rxi/sj.hmain34

For agents

markdown · JSON · MCP: product_card(name="rxi/sj.h")

Data as of 2026-10-19T08:05:51.212177+00:00 · Report a problem