E2B vs Bult
E2B is an MCP server published by e2b-dev. Marketplaces we read that list it: 1 (Docker MCP Catalog). Bult is an MCP server published by bultcloud. 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 |  Bult | |
|---|---|---|
| Docker MCP Catalog | Listed Version: sha256:ff4f9608cc4c Forks (GitHub): 72 Pulls (Docker Hub): 23 197 Stars (Docker Hub): 2 Stars (GitHub): 393 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 1.0.1 Downloads/month (npm): 171 Downloads/week (npm): 20 Forks (GitHub): 0 Stars (GitHub): 2 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 | Bult |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | 393 (better) | 2 (worse) |
| Pulls (Docker Hub) (differs) | 23 197 | 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) | On your machine (@bultcloud/mcp-server) |
| Transport | stdio | stdio |
| Tools it declares (differs) | 1 | Not published |
| Environment variables it asks for (differs) | 1, secrets among them: 1 | 2, secrets among them: 1 |
| Licence (differs) | Apache-2.0 | Not stated |
| Repository (differs) | github.com/e2b-dev/mcp-server | github.com/bultcloud/mcp-server |
| 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
E2B
Giving Claude ability to run code with E2B via MCP (Model Context Protocol).
Bult
Deploy and manage Bult apps from AI coding agents.
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)
Bult As a local MCP server: npm package
claude mcp add --env "BULT_API_TOKEN=<YOUR_BULT_API_TOKEN>" --env "BULT_API_URL=<YOUR_BULT_API_URL>" --transport stdio bult -- npx -y @bultcloud/mcp-serverRequires: BULT_API_TOKEN (secret), BULT_API_URL
Commands built only from what the marketplaces declare; the full set for every client is on each card.
Tools each declares
The marketplaces of Bult publish no list of tools, so we do not compare tools.
Settings each asks for
Only E2B asks for
E2B_API_KEY (secret)
Only Bult asks for
BULT_API_TOKEN (secret)BULT_API_URL
Settings as each marketplace publishes them. Asking for fewer is not better in itself.
What it can do: E2B · What it can do: Bult · 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. Figures come from our own regular passes over the marketplaces, last read on . We publish no contact details for plugin publishers.