codspeed vs scientific-debugging
codspeed is a plugin bundle for AI coding tools published by CodSpeedHQ. Marketplaces we read that list it: 3 (Claude Code: claude-plugins-official, Community GitHub marketplaces, Claude Code: claude-plugins-community). scientific-debugging is a plugin bundle for AI coding tools published by iowarp. Marketplaces we read that list it: 1 (Community GitHub marketplaces). As of our marketplace pass on 2026-10-13. 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 |  codspeed |  scientific-debugging |
|---|---|---|
| Claude Code: claude-plugins-official | Listed Version: 1.0.0 Forks (GitHub): 33 Stars (GitHub): 373 Not marked · First seen |
Not listed |
| Claude Code: claude-plugins-community | Listed Version: 1.0.0 Forks (GitHub): 33 Stars (GitHub): 373 Not marked · First seen |
Not listed |
| Community marketplace iowarp/clio-kit | Not listed | Listed Version: 0.3.1 Forks (GitHub): 5 Stars (GitHub): 8 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 | codspeed | scientific-debugging |
|---|---|---|
| Marketplaces that list it (differs) | 3 (better) | 1 (worse) |
| Stars (GitHub) (differs) | 373 (better) | 8 (worse) |
| Forks (GitHub) (differs) | 33 (better) | 5 (worse) |
| Last release | Not published | Not published |
| Where it runs (differs) | Remote server (mcp.codspeed.io/mcp) | Installs as a plugin bundle |
| Transport (differs) | Streamable HTTP | Not stated |
| Tools it declares | Not published | Not published |
| Environment variables it asks for | Not published | Not published |
| Parts of the bundle (differs) | 3 | Not published |
| Licence (differs) | MIT | Apache-2.0 |
| Repository (differs) | github.com/codspeedhq/codspeed | github.com/iowarp/clio-coder |
| Changes in the last 7 days (differs) | 0 | 2 |
| First seen (differs) | 2026-10-11 | 2026-10-13 |
| Endpoint at the last check (differs) | not checked yet | no remote endpoint we check |
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
codspeed
CodSpeed is the all-in-one performance testing toolkit. Dive into benchmarking results, flamegraphs, and performance comparisons — give Claude granular profiling context to pinpoint bottlenecks and autonomously iterate on performance via the CodSpeed MCP server.
scientific-debugging
Diagnoses stalled or cross-system failures and wrong, NaN, nondeterministic, or unexpectedly slow scientific results through falsifiable hypotheses across distinct fault classes, with evidence-cited verdicts before any fix. Not for designing benchmarks or pre-registered experiments; use experiment-protocol.
How to run each
codspeed As a Claude Code plugin
/plugin install codspeed@claude-plugins-officialscientific-debugging As a Claude Code plugin
/plugin marketplace add iowarp/clio-kit
/plugin install scientific-debugging@clio-kitCommands 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: codspeed · What it can do: scientific-debugging · Compare two other plugins
Data comes from the public marketplace file https://github.com/anthropics/claude-plugins-official/blob/HEAD/.claude-plugin/marketplace.json. 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.