evalloop vs langfuse
evalloop is a plugin bundle for AI coding tools published by kingmadellc. Marketplaces we read that list it: 1 (Claude Code: claude-plugins-community). langfuse is a plugin bundle for AI coding tools published by langfuse. Marketplaces we read that list it: 3 (Claude Code: claude-plugins-official, Claude: knowledge-work-plugins, Claude Code: claude-plugins-community). As of our marketplace pass on 2026-10-12. This pair was picked by a reader, not by our comparison rule, so search engines are asked not to index the page.
Where each is published
| Marketplace |  langfuse | |
|---|---|---|
| Claude Code: claude-plugins-community | Listed Version: 0c586f1 No figure published Not marked · First seen |
Listed Version: 1.5.2 Forks (GitHub): 39 Stars (GitHub): 302 Not marked · First seen |
| Claude Code: claude-plugins-official | Not listed | Listed Version: 1.8.1 Forks (GitHub): 39 Stars (GitHub): 302 Not marked · First seen |
| Claude: knowledge-work-plugins | Not listed | Listed Version: 1.8.1 Forks (GitHub): 39 Stars (GitHub): 302 Not marked · First seen |
Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.
The facts side by side
| Fact | evalloop | langfuse |
|---|---|---|
| Marketplaces that list it (differs) | 1 (worse) | 3 (better) |
| Stars (GitHub) (differs) | No figure on GitHub | 302 |
| Forks (GitHub) (differs) | No figure on GitHub | 39 |
| Last release | Not published | Not published |
| Where it runs | Installs as a plugin bundle | Installs as a plugin bundle |
| Transport | Not stated | Not stated |
| Tools it declares | Not published | Not published |
| Environment variables it asks for | Not published | Not published |
| Parts of the bundle (differs) | Not published | 1 |
| Licence (differs) | Not stated | MIT |
| Repository (differs) | github.com/kingmadellc/claude-plugins | github.com/langfuse/skills |
| Changes in the last 7 days | 0 | 0 |
| First seen | 2026-10-11 | 2026-10-11 |
Lines where the two differ have a tinted background and bold values. Where the data itself says which value is better (more marketplaces, a larger figure of the same marketplace, a fresher release, a verified mark on a marketplace that lists both), the better one is also marked green with ▲ and the worse one red with ▼. Where it runs, the transport, the tools, the settings, hooks, the bundle's parts, the licence and the week's changes are marked only as different: more or fewer is not better in itself.
What each says it does
evalloop
Autonomous prompt optimization using Karpathy's autoresearch pattern. Editable file + fixed eval metric + autonomous improvement loop.
langfuse
Skills for working with Langfuse, the open-source LLM engineering platform for tracing, prompt management, and evaluation.
How to run each
evalloop
No data for an automatic command: what its marketplaces declare does not say unambiguously how to connect it.
langfuse As a Claude Code plugin
/plugin install langfuse@claude-plugins-officialCommands built only from what the marketplaces declare; the full set for every client is on each card.
Tools each declares
Neither one's marketplaces publish a list of tools, so there is nothing to compare.
Settings each asks for
Neither one's marketplaces publish the settings it asks for.
What it can do: evalloop · What it can do: langfuse · Compare two other plugins
Data comes from the public marketplace file https://github.com/anthropics/claude-plugins-community/blob/HEAD/.claude-plugin/marketplace.json. Data comes from the public marketplace file https://github.com/anthropics/claude-plugins-official/blob/HEAD/.claude-plugin/marketplace.json. Data comes from the public marketplace file https://github.com/anthropics/knowledge-work-plugins/blob/HEAD/.claude-plugin/marketplace.json. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.