# emacs-lsp/lsp-ui

UI integrations for lsp-mode

Repository: https://github.com/emacs-lsp/lsp-ui
Canonical: https://ross.abutalabs.com/products/lsp-ui
Homepage: https://emacs-lsp.github.io/lsp-ui
Language: Emacs Lisp
License: GPL-3.0
License Family: copyleft
Topics: emacs-lsp, lsp, ui, lsp-ui, peek, xref, sideline, flycheck-diagnostics, flycheck
Last push: 2026-06-19T13:57:37+00:00

## Health v2 (maintenance only)
Score: 62/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 88, release rhythm 8, longevity 100
- inputs: {"age_days": 3200, "days_push": 75, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1116, forks 143 (observed 2026-08-28T04:03:38.823294+00:00)

## What it is
lsp-ui provides the higher-level UI modules for Emacs lsp-mode, including sideline diagnostics, peek definitions/references, documentation popups, and imenu integration. It is activated automatically by lsp-mode and configurable via simple use-package setup.

## Use cases
- show flycheck diagnostics inline in emacs
- peek definitions and references in emacs
- show hover documentation popup in emacs
- display LSP code actions on current line
- navigate cross references with jump list in emacs

## When to choose
- you use lsp-mode in Emacs and want richer UI for diagnostics, docs, and code navigation
- you want VS Code-style peek definitions in Emacs
- you want inline sideline display of hover info and code actions

## When to avoid
- you use a different editor or LSP client outside Emacs
- you prefer minimal UI without sideline or doc popups
- you use eglot instead of lsp-mode

## Facets
- artifact type: plugin
- maturity: active
- function: ui-components, developer-tools, documentation
- domain: text-editors, developer-tools
- platform: editor-plugin, cross-platform
- tags: lsp, emacs-lisp, flycheck, code-lens, xref, sideline, peek, emacs

## Member repositories
- emacs-lsp/lsp-ui (main) score 62

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:03:38.823294+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 2026-08-30T06:41:57.793848+00:00, confidence not recorded.
  - readme: https://github.com/emacs-lsp/lsp-ui (fetched 2026-08-28T04:03:38.823294+00:00, sha 708a7f304119)
  - homepage: https://emacs-lsp.github.io/lsp-ui (fetched 2026-08-29T12:45:40.432596+00:00, sha 855a46a06044)
- Data as of 2026-08-30T08:39:29.467469+00:00.