Activity Tracker vs Opik
Activity Tracker is a plugin bundle for AI coding tools published by Cong. Marketplaces we read that list it: 1 (Community GitHub marketplaces). 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 2026-10-16. 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 |  Opik | |
|---|---|---|
| Community marketplace chicongst/kortex | Listed Version: 0.5.1 Forks (GitHub): 1 Stars (GitHub): 8 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 3.0.5 Downloads/month (PyPI): 3 591 Downloads/week (PyPI): 1 906 Forks (GitHub): 38 Stars (GitHub): 222 Not marked · First seen |
| Docker MCP Catalog | Not listed | Listed Version: sha256:0e0d7d33d5eb Forks (GitHub): 38 Pulls (Docker Hub): 16 974 Stars (Docker Hub): 1 Stars (GitHub): 222 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 | Activity Tracker | Opik |
|---|---|---|
| Marketplaces that list it (differs) | 1 (worse) | 2 (better) |
| Stars (GitHub) (differs) | 8 (worse) | 222 (better) |
| Pulls (Docker Hub) (differs) | No figure on Docker Hub | 16 974 |
| Forks (GitHub) (differs) | 1 (worse) | 38 (better) |
| Last release | Not published | Not published |
| 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) | 11 | Not published |
| Parts of the bundle (differs) | 11 | Not a bundle |
| Licence (differs) | Not stated | Apache-2.0 |
| Repository (differs) | github.com/chicongst/kortex | github.com/comet-ml/opik-mcp |
| Changes in the last 7 days (differs) | 2 | 0 |
| First seen (differs) | 2026-10-15 | 2026-10-11 |
| Endpoint at the last check (differs) | no remote endpoint we check | Responded 10 h ago, requires a key |
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
Activity Tracker
Live flow-graph viewer for Claude Code — watch prompts, tools, and parallel subagents animate in real time, with zero-config token, cost, and context-window tracking from the session transcript. Local, zero-dependency. After installing, restart Claude Code, then open http://127.0.0.1:39000/flow.html.
Opik
Read and score Opik traces, experiments, datasets and prompts from your AI assistant.
How to run each
Activity Tracker As a Claude Code plugin
/plugin marketplace add chicongst/kortex
/plugin install activity-tracker@kortexOpik 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 Activity Tracker publish no list of tools, so we do not compare tools.
Settings each asks for
The marketplaces of Activity Tracker publish no settings it asks for, so we do not compare settings.
What it can do: Activity Tracker · What it can do: Opik · Compare two other plugins
Data comes from public marketplace files in GitHub repositories of their authors. 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.