adversarial-thinking vs Opik
adversarial-thinking is no longer listed on any marketplace we read: these are its last known data, as of 2026‑10‑21.
adversarial-thinking is a plugin bundle for AI coding tools published by fullo. No marketplace we read lists it any more. 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. A plugin in this pair is no longer listed on any marketplace we read, so search engines are asked not to index the page.
Where each is published
| Marketplace |  Opik | |
|---|---|---|
| Community marketplace fullo/claude-plugins-marketplace | Removed on 2026-10-21 Version: not stated 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): 43 Stars (GitHub): 223 Not marked · First seen |
| Docker MCP Catalog | Not listed | Listed Version: sha256:0e0d7d33d5eb Forks (GitHub): 43 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 | adversarial-thinkingno longer listed · | Opik |
|---|---|---|
| Marketplaces that list it (differs) | 0 | 2 |
| Stars (GitHub) (differs) | 0 | 223 |
| Pulls (Docker Hub) (differs) | No figure on Docker Hub | 17 042 |
| Forks (GitHub) (differs) | 0 | 43 |
| 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 |
| Parts of the bundle (differs) | 1 | Not a bundle |
| Licence (differs) | Not stated | Apache-2.0 |
| Repository (differs) | github.com/fullo/claude-adversarial-thinking | github.com/comet-ml/opik-mcp |
| Changes in the last 7 days (differs) | 4 | 1 |
| First seen (differs) | 2026-10-19 | 2026-10-11 |
| Endpoint at the last check (differs) | no remote endpoint we check | Responded 6 days ago, requires a key |
Lines where the two differ have a tinted background and bold values. No value is marked better or worse: a plugin no marketplace lists any more is shown with its last known data, which we do not rank against current figures.
What to use instead of adversarial-thinking
Plugins still listed whose own names, descriptions, tools and skills are closest in meaning to it. Comparable, not endorsed.
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A deterministic thinking partner that challenges assumptions and applies 150+ mental models across 17 disciplines to sharpen decisions, solve problems, and think more clearly…
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Constructively challenge ideas, test assumptions and competing explanations, and recommend a next step calibrated to the evidence.
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Your AI argues before it answers — five-step decision loop built from Bezos's letters, Musk's algorithm, and Farnam Street's mental models.
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Metacognition as a service. Creative thinking moves for AI agents — plan, explore, unstick, and evaluate using 200+ curated techniques for lateral thinking.
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Invoke deep sequential thinking for complex problem-solving. Use when the user says 'use ultrathink', 'ultrathink', or when tackling problems that require careful step-by-step…
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Structured thinking and multi-perspective deliberation tools
What each says it does
adversarial-thinking
Adversarial thinking companion — Socratic method, cognitive forcing, desirable difficulties. Makes thinking harder, not easier.
Opik
Read and score Opik traces, experiments, datasets and prompts from your AI assistant.
How to run each
adversarial-thinking
No data for an automatic command: what its marketplaces declare does not say unambiguously how to connect it.
Opik 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 adversarial-thinking publish no list of tools, so we do not compare tools.
Settings each asks for
The marketplaces of adversarial-thinking publish no settings it asks for, so we do not compare settings.
What it can do: adversarial-thinking · 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.