Developer tools
Cellar
Retrieves JVM API details from dependency artifacts and project classpaths in a format directly usable as coding-agent context.
Overview
Research summary
Cellar helps coding agents and developers inspect the public API of JVM dependencies from a terminal. It can look up individual symbols, list package members, search names, read published source and inspect dependency trees using Maven coordinates. Project-aware commands also work with classpaths from supported Scala build tools.
The output is Markdown that can be included in an agent's context, grounding generated code in the dependency's actual API. Cellar uses Coursier and tasty-query, with detailed Scala 3 support, Java class support and best-effort Scala 2 metadata handling. A Claude Code plugin exposes the same tool through an agent skill.
Repository summary
- Stars
- Unavailable
- Open issues
- Unavailable
- Last push
- Unavailable
- Commits, 90 days
- Unavailable
- Repository activity
- Not scored
- Version
- Unavailable
Recorded catalogue figures. View repository data and provenance →
Classification
Pricing & services
Paid services unknown
Whether the provider offers paid products or services has not been established.
Licence scope
Implementation
Recorded implementation details and interfaces for Cellar.
Implementation details
Scala 3 CLI built with Cats Effect, fs2, Coursier and tasty-query, also distributed as native binaries.
- Languages
- Scala
- Repository type
- source
Recorded interfaces and capabilities
Licence scope
Repository
Repository snapshots, release information and recorded maintenance signals.
Repository snapshot
- Stars
- Unavailable
- Open issues
- Unavailable
- Last push
- Unavailable
- Commits, 90 days
- Unavailable
- Repository activity
- Not scored
- Archived
- Not recorded
Repository activity is a snapshot, not a quality or popularity ranking. It combines recent-push freshness (50%), 90-day commits (30%) and issue pressure (20%).
Maintenance and provenance
- Catalogue snapshot
- 2026-10-06
Documentation
Recorded references and research provenance for this entry.
Recorded sources 3
- https://github.com/VirtusLab/cellar Project page · Linked repository · Research reference
- https://index.scala-lang.org/virtuslab/cellar Research reference
- https://github.com/VirtusLab/cellar/blob/main/LICENSE Research reference
Research metadata
- Research date
- 2026-10-02
- Catalogue snapshot
- 2026-10-06