# redhat-developer/yaml-language-server

Language Server for YAML Files

Repository: https://github.com/redhat-developer/yaml-language-server
Canonical: https://ross.abutalabs.com/products/yaml-language-server
Language: TypeScript
License: MIT
License Family: permissive
Topics: yaml-support, language-server, yaml
Last push: 2026-08-19T15:37:06+00:00

## Health v2 (maintenance only)
Score: 76/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 98, release rhythm 35, longevity 100
- inputs: {"age_days": 3329, "days_push": 14, "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 1514, forks 350 (observed 2026-08-28T04:04:56.405501+00:00)

## What it is
A language server implementing the Language Server Protocol (LSP) for YAML files, providing validation, schema-driven completion, hover, formatting, and document symbols. It supports JSON Schema drafts 04, 07, 2019-09, and 2020-12 and is distributed via npm.

## Use cases
- add yaml autocomplete and validation to my editor
- validate yaml files against a json schema
- get hover documentation for kubernetes yaml
- format and lint yaml files
- language server for yaml in neovim

## When to choose
- you need rich YAML editing features in any LSP-capable editor
- you want schema-based validation and completion for YAML config files
- you are building an editor plugin that needs YAML support

## When to avoid
- you only need to parse YAML programmatically without editor features
- your project does not use the Language Server Protocol
- you need a standalone YAML linter CLI without an editor client

## Facets
- artifact type: library
- maturity: active
- function: parser, linter, developer-tools, documentation
- domain: developer-tools, parsers, text-editors
- platform: cross-platform, editor-plugin
- tags: yaml, language-server-protocol, lsp, json-schema, editor-integration, nodejs

## Member repositories
- redhat-developer/yaml-language-server (main) score 76

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:56.405501+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 2026-08-30T04:32:13.401063+00:00, confidence not recorded.
  - readme: https://github.com/redhat-developer/yaml-language-server (fetched 2026-08-28T04:04:56.405501+00:00, sha 2b1eb34b4b33)
- Data as of 2026-08-30T08:39:29.467469+00:00.