Polar Signals vs Postman MCP Server
Polar Signals is an MCP server published by docker. Marketplaces we read that list it: 1 (Docker MCP Catalog). Postman MCP Server is an MCP server published by postman.com. Marketplaces we read that list it: 3 (Official MCP Registry, Docker MCP Catalog, npm registry (MCP servers)). As of our marketplace pass on 2026-11-11. 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 |  Polar Signals |   Postman MCP Server |
|---|---|---|
| Docker MCP Catalog | Listed Version: not stated No figure published Not marked · First seen |
Listed Version: sha256:73f715030cbe Forks (GitHub): 86 Pulls (Docker Hub): 47 569 Stars (Docker Hub): 6 Stars (GitHub): 328 Not marked · First seen |
| Official MCP Registry | Not listed | Listed Version: 2.15.0 Downloads/month (npm): 46 496 Downloads/week (npm): 7 759 Forks (GitHub): 86 Stars (GitHub): 328 Not marked · First seen |
| npm registry (MCP servers) | Not listed | Listed Version: 2.15.0 Downloads/month (npm): 46 496 Downloads/week (npm): 7 759 Forks (GitHub): 86 Stars (GitHub): 328 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 | Postman MCP Server |
|---|---|---|
| Marketplaces that list it (differs) | 1 (worse) | 3 (better) |
| Stars (GitHub) (differs) | No figure on GitHub | 328 |
| Pulls (Docker Hub) (differs) | No figure on Docker Hub | 47 569 |
| Forks (GitHub) (differs) | No figure on GitHub | 86 |
| Last release (differs) | Not published | 2026-10-30 |
| Where it runs (differs) | Remote server (api.polarsignals.com/api/mcp) | Remote server or your machine |
| Transport (differs) | Streamable HTTP | Streamable HTTP, stdio |
| Tools it declares (differs) | Not published | 42 |
| Environment variables it asks for | 1, secrets among them: 1 | 1, secrets among them: 1 |
| Licence | Apache-2.0 | Apache-2.0 |
| Repository (differs) | Not stated | github.com/postmanlabs/postman-mcp-server |
| Changes in the last 7 days | 0 | 0 |
| First seen | 2026-10-11 | 2026-10-11 |
| Endpoint at the last check (differs) | Responded 1 h ago | Responded less than an hour ago, requires authentication |
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.
Postman MCP Server
Give your AI agents trusted access to the full Postman platform.
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)
Postman MCP Server As a remote MCP server
claude mcp add --transport http postman-mcp-server https://mcp.postman.com/mcp --header "Authorization: Bearer <YOUR_TOKEN>"Requires: POSTMAN_API_KEY (secret), Authorization header
Commands built only from what the marketplaces declare; the full set for every client is on each card.
Both endpoints responded at the last daily check. How we check endpoints
Tools each declares
The marketplaces of Polar Signals publish no list of tools, so we do not compare tools.
Settings each asks for
Only Polar Signals asks for
POLAR_SIGNALS_API_KEY (secret)
Only Postman MCP Server asks for
POSTMAN_API_KEY (secret)
Settings as each marketplace publishes them. Asking for fewer is not better in itself.
What it can do: Polar Signals · What it can do: Postman MCP Server · Compare two other plugins
Data comes from the Docker MCP Catalog (desktop.docker.com/mcp/catalog) and Docker Hub. Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Package data comes from the public npm registry (registry.npmjs.org). Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.