postman vs Sezzlee OpenAPI
postman is a plugin bundle for AI coding tools published by Postman-Devrel. Marketplaces we read that list it: 1 (Claude Code: claude-plugins-community). Sezzlee OpenAPI is an MCP server published by sezzlee. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-10-13. 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 |  Sezzlee OpenAPI | |
|---|---|---|
| Claude Code: claude-plugins-community | Listed Version: 1.3.1 Forks (GitHub): 13 Stars (GitHub): 41 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 0.2.3 Downloads/month (npm): 546 Downloads/week (npm): 546 Forks (GitHub): 0 Stars (GitHub): 0 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 | postman | Sezzlee OpenAPI |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | 41 (better) | 0 (worse) |
| Forks (GitHub) (differs) | 13 (better) | 0 (worse) |
| Last release | Not published | Not published |
| Where it runs (differs) | Remote server (mcp.postman.com/$%7BPOSTMAN_MCP_MODE:-mcp%7D) | On your machine (@sezzlee/openapi-mcp) |
| Transport (differs) | Streamable HTTP | stdio |
| Tools it declares | Not published | Not published |
| Environment variables it asks for (differs) | Not published | 1, secrets among them: 0 |
| Parts of the bundle (differs) | 28 | Not a bundle |
| Licence (differs) | Apache-2.0 | Not stated |
| Repository (differs) | github.com/postman-devrel/postman-claude-code-plugin | github.com/sezzlee/mcp |
| Changes in the last 7 days (differs) | 0 | 2 |
| First seen (differs) | 2026-10-11 | 2026-10-12 |
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
postman
Full API lifecycle management for Claude Code. Sync collections, generate client code, discover APIs, run tests, create mocks, publish docs, and audit security. Powered by the Postman MCP Server.
Sezzlee OpenAPI
Expose an OpenAPI document to agents as a search-first tool catalog over your existing API.
How to run each
postman
No data for an automatic command: what its marketplaces declare does not say unambiguously how to connect it.
Sezzlee OpenAPI As a local MCP server: npm package
claude mcp add --env "SEZZLEE_OPENAPI_CONFIG=<YOUR_SEZZLEE_OPENAPI_CONFIG>" --transport stdio openapi -- npx -y @sezzlee/openapi-mcpRequires: SEZZLEE_OPENAPI_CONFIG
Commands built only from what the marketplaces declare; the full set for every client is on each card.
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 postman publish no settings it asks for, so we do not compare settings.
What it can do: postman · What it can do: Sezzlee OpenAPI · 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. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.