spc-tools vs Opik
spc-tools is a plugin bundle for AI coding tools published by ewolters. Marketplaces we read that list it: 1 (Claude Code: claude-plugins-community). Opik is an MCP server published by comet-ml. Marketplaces we read that list it: 2 (Official MCP Registry, Docker MCP Catalog). As of our marketplace pass on 2026-10-21. 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 |  spc-tools |  Opik |
|---|---|---|
| Claude Code: claude-plugins-community | Listed Version: 2d28422 Forks (GitHub): 0 Stars (GitHub): 0 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 3.0.6 Downloads/month (PyPI): 3 591 Downloads/week (PyPI): 1 906 Forks (GitHub): 37 Stars (GitHub): 223 Not marked · First seen |
| Docker MCP Catalog | Not listed | Listed Version: sha256:0e0d7d33d5eb Forks (GitHub): 37 Pulls (Docker Hub): 17 042 Stars (Docker Hub): 1 Stars (GitHub): 223 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 | spc-tools | Opik |
|---|---|---|
| Marketplaces that list it (differs) | 1 (worse) | 2 (better) |
| Stars (GitHub) (differs) | 0 (worse) | 223 (better) |
| Pulls (Docker Hub) (differs) | No figure on Docker Hub | 17 042 |
| Forks (GitHub) (differs) | 0 (worse) | 37 (better) |
| Last release (differs) | Not published | 2026-10-19 |
| Where it runs (differs) | Installs as a plugin bundle | Remote server or your machine |
| Transport (differs) | Not stated | Streamable HTTP, stdio |
| Tools it declares (differs) | Not published | 13 |
| Environment variables it asks for (differs) | Not published | 4, secrets among them: 1 |
| Hooks it runs (differs) | 1 | Not published |
| Parts of the bundle (differs) | 5 | Not a bundle |
| Licence | Apache-2.0 | Apache-2.0 |
| Repository (differs) | github.com/ewolters/spc-tools | github.com/comet-ml/opik-mcp |
| Changes in the last 7 days (differs) | 0 | 1 |
| First seen (differs) | 2026-10-12 | 2026-10-11 |
| Endpoint at the last check (differs) | no remote endpoint we check | Not responding since 2026-10-21 |
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
spc-tools
SPC Tools gives Claude a calibrated, comprehensive statistical process control toolkit with pure-JavaScript visualization. Covers standard techniques (control charts, Cpk, Gage R&R) as well as Bayesian and distribution-free methods. No dependencies required; computation is pure Python, charts are zero-dependency ChartSpec JSON rendered client-side.
Opik
Read and score Opik traces, experiments, datasets and prompts from your AI assistant.
How to run each
spc-tools As a Claude Code plugin
/plugin marketplace add anthropics/claude-plugins-community
/plugin install spc-tools@claude-communityOpik As a remote MCP server
claude mcp add --transport http opik-mcp https://www.comet.com/opik/api/v1/mcpRequires: OPIK_API_KEY (secret)
Commands built only from what the marketplaces declare; the full set for every client is on each card.
Only Opik has a remote endpoint we check. How we check endpoints
Tools each declares
The marketplaces of spc-tools publish no list of tools, so we do not compare tools.
Settings each asks for
The marketplaces of spc-tools publish no settings it asks for, so we do not compare settings.
What it can do: spc-tools · What it can do: Opik · 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 Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Data comes from the Docker MCP Catalog (desktop.docker.com/mcp/catalog) and Docker Hub. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.