Postman vs io.github.cocaxcode/api-testing-mcp
Postman is a plugin bundle for AI coding tools published by postmanlabs. Marketplaces we read that list it: 1 (Claude Code: claude-plugins-official). io.github.cocaxcode/api-testing-mcp is an MCP server published by cocaxcode. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-10-12. 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 |  Postman |  io.github.cocaxcode/api-testing-mcp |
|---|---|---|
| Claude Code: claude-plugins-official | Listed Version: 2.0.1 Forks (GitHub): 7 Stars (GitHub): 15 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 0.11.12 Downloads/month (npm): 465 Downloads/week (npm): 125 Forks (GitHub): 2 Stars (GitHub): 10 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 | io.github.cocaxcode/api-testing-mcp |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | 15 (better) | 10 (worse) |
| Forks (GitHub) (differs) | 7 (better) | 2 (worse) |
| Last release | Not published | Not published |
| Where it runs (differs) | Installs as a plugin bundle | On your machine (@cocaxcode/api-testing-mcp) |
| Transport (differs) | Not stated | stdio |
| Tools it declares | Not published | Not published |
| Environment variables it asks for | Not published | Not published |
| Hooks it runs (differs) | 1 | Not published |
| Parts of the bundle (differs) | 14 | Not a bundle |
| Licence (differs) | Apache-2.0 | Not stated |
| Repository (differs) | github.com/postmanlabs/postman-plugin | github.com/cocaxcode/api-testing-mcp |
| Changes in the last 7 days | 0 | 0 |
| First seen | 2026-10-11 | 2026-10-11 |
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
Work with Postman from your agent: bootstrap a repo's Postman setup, mock an API before it's implemented, run collection and governance checks in CI, monitor a live endpoint, deploy and debug Postman Flows, and publish generated API documentation.
io.github.cocaxcode/api-testing-mcp
MCP server for API testing. 35 tools: HTTP, assertions, flows, OpenAPI, collections.
How to run each
Postman As a Claude Code plugin
/plugin install postman@claude-plugins-officialio.github.cocaxcode/api-testing-mcp As a local MCP server: npm package
claude mcp add --transport stdio api-testing-mcp -- npx -y @cocaxcode/api-testing-mcpCommands 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
Neither one's marketplaces publish the settings it asks for.
What it can do: Postman · What it can do: io.github.cocaxcode/api-testing-mcp · Compare two other plugins
Data comes from the public marketplace file https://github.com/anthropics/claude-plugins-official/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.