E2B vs cortex
E2B is an MCP server published by e2b-dev. Marketplaces we read that list it: 1 (Docker MCP Catalog). cortex is a plugin bundle for AI coding tools published by alphaaiservice. Marketplaces we read that list it: 1 (Claude Code: claude-plugins-community). 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 |  E2B |  cortex |
|---|---|---|
| Docker MCP Catalog | Listed Version: sha256:ff4f9608cc4c Forks (GitHub): 72 Pulls (Docker Hub): 23 208 Stars (Docker Hub): 2 Stars (GitHub): 393 Not marked · First seen |
Not listed |
| Claude Code: claude-plugins-community | Not listed | Listed Version: 1.5.0 Forks (GitHub): 0 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 | E2B | cortex |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | 393 (better) | 1 (worse) |
| Pulls (Docker Hub) (differs) | 23 208 | No figure on Docker Hub |
| Forks (GitHub) (differs) | 72 (better) | 0 (worse) |
| Last release | Not published | Not published |
| Where it runs (differs) | On your machine (mcp/e2b) | Remote server (mcp.atlassian.com/v1/mcp) |
| Transport (differs) | stdio | Streamable HTTP |
| Tools it declares (differs) | 1 | Not published |
| Environment variables it asks for (differs) | 1, secrets among them: 1 | Not published |
| Hooks it runs (differs) | Not published | 11 |
| Parts of the bundle (differs) | Not a bundle | 103 |
| Licence (differs) | Apache-2.0 | MIT |
| Repository (differs) | github.com/e2b-dev/mcp-server | github.com/alphaaiservice/cortex |
| Changes in the last 7 days | 0 | 0 |
| First seen | 2026-10-11 | 2026-10-11 |
| Endpoint at the last check (differs) | no remote endpoint we check | Responded 30 h ago, requires a key |
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
E2B
Giving Claude ability to run code with E2B via MCP (Model Context Protocol).
cortex
Cortex — SDLC Automation Engine by Alpha AI. Automates the entire software development lifecycle from idea to deployment. 37 slash commands, 11 specialized AI agents, and 9 auto-invoked skills covering project scaffolding, autonomous building, code review, testing, security scanning, CI/CD generation, and deployment. Supports Python/FastAPI, Node.js/NestJS, and Java/Spring Boot backends with Next.js frontend. Enforces production-grade standards: JWT auth, layered architecture, OWASP security, and performance best practices — all without human intervention.
How to run each
E2B As a local MCP server: Docker image
claude mcp add --env "E2B_API_KEY=<YOUR_E2B_API_KEY>" --transport stdio e2b -- docker run -i --rm -e E2B_API_KEY mcp/e2bRequires: E2B_API_KEY (secret)
cortex As a Claude Code plugin
/plugin marketplace add anthropics/claude-plugins-community
/plugin install cortex@claude-communityCommands built only from what the marketplaces declare; the full set for every client is on each card.
Only cortex has a remote endpoint we check. How we check endpoints
Tools each declares
The marketplaces of cortex publish no list of tools, so we do not compare tools.
Settings each asks for
The marketplaces of cortex publish no settings it asks for, so we do not compare settings.
What it can do: E2B · What it can do: cortex · 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.