# jupyter-lsp/jupyterlab-lsp

Coding assistance for JupyterLab (code navigation + hover suggestions + linters + autocompletion + rename) using Language Server Protocol

Repository: https://github.com/jupyter-lsp/jupyterlab-lsp
Canonical: https://ross.abutalabs.com/products/jupyterlab-lsp
Homepage: https://jupyterlab-lsp.readthedocs.io
Language: TypeScript
License: BSD-3-Clause
License Family: permissive
Topics: jupyterlab, jupyterlab-extension, language-server-protocol, jupyter-lab, lsp, linter, jupyter, jupyter-notebook, notebook, notebook-jupyter, ipython, autocompletion, julia-language, r
Last push: 2026-06-21T15:25:40+00:00

## Health v2 (maintenance only)
Score: 82/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 88, release rhythm 65, longevity 100
- inputs: {"age_days": 2573, "days_push": 73, "days_rel": 153, "gap_med": 50, "n_releases_24m": 4}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2001, forks 158 (observed 2026-08-28T04:06:04.402006+00:00)

## What it is
A JupyterLab extension that integrates Language Server Protocol servers to bring IDE-like coding assistance to notebooks and files. It provides autocompletion, hover tooltips, diagnostics, jump-to-definition, and rename support across many languages.

## Use cases
- get IDE-style autocompletion in JupyterLab notebooks
- jump to function definitions in a Jupyter notebook
- see linter diagnostics and errors inline while coding in JupyterLab
- hover over code to view function signatures and documentation
- rename variables safely across a notebook
- use language servers for Python, R, Julia, or TypeScript in JupyterLab

## When to choose
- you use JupyterLab and want richer code intelligence than the built-in completer
- you work with notebooks in multiple languages and want consistent LSP features
- you need jump-to-definition and reference highlighting in notebook code

## When to avoid
- you use classic Jupyter Notebook instead of JupyterLab
- you need a full standalone IDE rather than notebook-based editing
- your language has no available language server

## Facets
- artifact type: plugin
- maturity: active
- function: editor, linter, developer-tools
- domain: developer-tools, text-editors, data-science
- platform: browser, python, cross-platform
- tags: jupyterlab-extension, language-server-protocol, autocompletion, code-navigation, jupyter-notebook, ide-features, web-server

## Member repositories
- jupyter-lsp/jupyterlab-lsp (main) score 82

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:04.402006+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 2026-08-30T03:02:06.587065+00:00, confidence not recorded.
  - readme: https://github.com/jupyter-lsp/jupyterlab-lsp (fetched 2026-08-28T04:06:04.402006+00:00, sha bedfbd2a7269)
- Data as of 2026-08-30T08:39:29.467469+00:00.