Polar Signals vs MarcoPolo
Polar Signals is an MCP server published by docker. Marketplaces we read that list it: 1 (Docker MCP Catalog). MarcoPolo is a plugin bundle for AI coding tools published by immersa-co. Marketplaces we read that list it: 1 (Claude Code: claude-plugins-community). As of our marketplace pass on 2026-10-15. 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 |  MarcoPolo | |
|---|---|---|
| Docker MCP Catalog | Listed Version: not stated No figure published Not marked · First seen |
Not listed |
| Claude Code: claude-plugins-community | Not listed | Listed Version: 3.3.1 Forks (GitHub): 2 Stars (GitHub): 1 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 | Polar Signals | MarcoPolo |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | No figure on GitHub | 1 |
| Forks (GitHub) (differs) | No figure on GitHub | 2 |
| Last release | Not published | Not published |
| Where it runs (differs) | Remote server (api.polarsignals.com/api/mcp) | Remote server (mcp.marcopolo.dev) |
| Transport | Streamable HTTP | Streamable HTTP |
| Tools it declares | Not published | Not published |
| Environment variables it asks for (differs) | 1, secrets among them: 1 | Not published |
| Parts of the bundle (differs) | Not a bundle | 6 |
| Licence | Apache-2.0 | Apache-2.0 |
| Repository (differs) | Not stated | github.com/immersa-co/marcopolo-plugin |
| Changes in the last 7 days | 0 | 0 |
| First seen | 2026-10-11 | 2026-10-11 |
| Endpoint at the last check (differs) | Responded 4 h ago | not checked yet |
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
Polar Signals
MCP server for Polar Signals Cloud continuous profiling platform, enabling AI assistants to analyze CPU performance, memory usage, and identify optimization opportunities in production systems.
MarcoPolo
MarcoPolo is a data computer that connects to your databases, warehouses, cloud storage, and SaaS applications, and provides a workspace where AI can query, correlate, analyze, and act on that data. The MarcoPolo plugin is the most effective way to connect Claude to this computer - it bundles the MCP connection with skills and a subagent that guide Claude through proven data workflows.
How to run each
Polar Signals As a remote MCP server
claude mcp add --transport http polar-signals https://api.polarsignals.com/api/mcp/Requires: POLAR_SIGNALS_API_KEY (secret)
MarcoPolo As a Claude Code plugin
/plugin marketplace add anthropics/claude-plugins-community
/plugin install marcopolo@claude-communityCommands built only from what the marketplaces declare; the full set for every client is on each card.
Only Polar Signals has a remote endpoint we check. How we check endpoints
Tools each declares
Neither one's marketplaces publish a list of tools, so there is nothing to compare.
Settings each asks for
The marketplaces of MarcoPolo publish no settings it asks for, so we do not compare settings.
What it can do: Polar Signals · What it can do: MarcoPolo · Compare two other plugins
Data comes from the Docker MCP Catalog (desktop.docker.com/mcp/catalog) and Docker Hub. 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.