# edn-format/edn

Extensible Data Notation

Repository: https://github.com/edn-format/edn
Canonical: https://ross.abutalabs.com/products/edn
License Family: other
Last push: 2022-01-15T06:14:47+00:00

## Health v2 (maintenance only)
Score: 32/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 0, release rhythm 35, longevity 100
- inputs: {"age_days": 5109, "days_push": 1691, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2766, forks 101 (observed 2026-08-28T04:07:18.648210+00:00)

## What it is
A specification for Extensible Data Notation (edn), a text-based data format for conveying immutable values, used by Clojure, Datomic, and other applications. The repository defines the format in isolation to help implement readers and writers in other languages.

## Use cases
- serialize data in a language-neutral text format
- implement an edn parser or reader in another language
- exchange data between Clojure and non-Clojure systems
- represent programs and data with a rich set of built-in elements
- convey single values in HTTP query params or streams

## When to choose
- you need a simple, extensible, schema-free data notation for value transfer
- you work in the Clojure or Datomic ecosystem and need the canonical edn spec
- you want a streaming-friendly format with no enclosing top-level element

## When to avoid
- you need schemas, validation, or object identity/reference semantics
- you need a widely adopted interchange format with broad tooling like JSON or YAML
- you require a formal grammar or rigorous standard - the spec is still casual

## Facets
- artifact type: learning-resource
- maturity: maintenance
- function: serialization, parser, json
- domain: parsers, developer-tools, apis
- platform: cross-platform
- tags: data-notation, specification, clojure, data-format, data-transfer-format

## Member repositories
- edn-format/edn (main) score 32

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:18.648210+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 2026-08-30T08:16:45.336347+00:00, confidence not recorded.
  - readme: https://github.com/edn-format/edn (fetched 2026-08-28T04:07:18.648210+00:00, sha 4ec5de32c1ee)
- Data as of 2026-08-30T08:39:29.467469+00:00.