skill-profiler vs singularity-claude
skill-profiler is a plugin bundle for AI coding tools published by Callum. Marketplaces we read that list it: 1 (Community GitHub marketplaces). singularity-claude is a plugin bundle for AI coding tools published by Shmayro. Marketplaces we read that list it: 1 (Claude Code: claude-plugins-community). As of our marketplace pass on 2026-10-16. 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 |  singularity-claude | |
|---|---|---|
| Community marketplace callumthomas/claude-tools | Listed Version: 1.0.1 Forks (GitHub): 1 Stars (GitHub): 4 Not marked · First seen |
Not listed |
| Claude Code: claude-plugins-community | Not listed | Listed Version: 0.1.0 Forks (GitHub): 3 Stars (GitHub): 29 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 | skill-profiler | singularity-claude |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | 4 (worse) | 29 (better) |
| Forks (GitHub) (differs) | 1 (worse) | 3 (better) |
| 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 |
| Hooks it runs (differs) | Not published | 1 |
| Parts of the bundle (differs) | 1 | 10 |
| Licence (differs) | UNLICENSED | MIT |
| Repository (differs) | github.com/callumthomas/claude-tools | github.com/shmayro/singularity-claude |
| Changes in the last 7 days (differs) | 2 | 0 |
| First seen (differs) | 2026-10-15 | 2026-10-12 |
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
skill-profiler
Profiles and optimises Claude skills and agent configurations for token efficiency, model routing, and context management.
singularity-claude
Self-evolving skill engine for Claude Code. Creates, scores, repairs, and hardens skills autonomously through recursive improvement cycles. Includes 7 skills (create, score, repair, crystallize, review, dashboard), 2 agents (skill-assessor, gap-detector), and utility scripts. Skills are scored after every execution — low scores trigger automatic repair, high scores lead to crystallization (locked, immutable versions). No external dependencies.
How to run each
skill-profiler As a Claude Code plugin
/plugin marketplace add callumthomas/claude-tools
/plugin install skill-profiler@claude-toolssingularity-claude As a Claude Code plugin
/plugin marketplace add anthropics/claude-plugins-community
/plugin install singularity-claude@claude-communityCommands 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: skill-profiler · What it can do: singularity-claude · Compare two other plugins
Data comes from public marketplace files in GitHub repositories of their authors. Data comes from the public marketplace file https://github.com/anthropics/claude-plugins-community/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.