# dakrone/cheshire

Clojure JSON and JSON SMILE (binary json format) encoding/decoding

Repository: https://github.com/dakrone/cheshire
Canonical: https://ross.abutalabs.com/products/cheshire
Homepage: https://github.com/dakrone/cheshire
Language: Clojure
License: MIT
License Family: permissive
Last push: 2026-07-25T16:35:25+00:00

## Health v2 (maintenance only)
Score: 75/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 94, release rhythm 35, longevity 100
- inputs: {"age_days": 5642, "days_push": 39, "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 1557, forks 155 (observed 2026-08-28T04:05:03.389550+00:00)

## What it is
Cheshire is a fast Clojure JSON encoding/decoding library built on Jackson, supporting extended types like Date, UUID, Set, and Symbol, plus the binary SMILE format. It combines the speed of clj-json with the custom-encoder flexibility of clojure-json.

## Use cases
- encode clojure maps to json
- parse json strings in clojure
- generate smile binary json
- custom json encoders for dates and uuids
- pretty-print json output
- stream json to a file or writer

## When to choose
- you need fast, feature-rich JSON handling in Clojure
- you need SMILE binary format support
- you need custom encoders for Java types like Date or UUID
- you're using Babashka, which bundles it

## When to avoid
- you need formats other than JSON/SMILE like EDN or Transit
- you're not on the JVM or Clojure ecosystem
- you need streaming JSON parsing of very large documents with low memory

## Facets
- artifact type: library
- maturity: stable
- function: serialization, parser
- domain: developer-tools, backend
- platform: jvm, jvm-scripting
- tags: json, smile, clojure, jackson, encoding, decoding, data-engineering

## Member repositories
- dakrone/cheshire (main) score 75

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:03.389550+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 2026-08-30T04:29:56.394725+00:00, confidence not recorded.
  - readme: https://github.com/dakrone/cheshire (fetched 2026-08-28T04:05:03.389550+00:00, sha 613af3b6321b)
  - homepage: https://github.com/dakrone/cheshire (fetched 2026-08-29T11:29:49.291784+00:00, sha 7580f004e4dc)
- Data as of 2026-08-30T08:39:29.467469+00:00.