Heroku vs Flux Cloud
Heroku is an MCP server published by heroku. Marketplaces we read that list it: 1 (Docker MCP Catalog). Flux Cloud is an MCP server published by RunOnFlux. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-10-18. 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 |  Heroku |  Flux Cloud |
|---|---|---|
| Docker MCP Catalog | Listed Version: sha256:bc972fc22f00 Forks (GitHub): 30 Pulls (Docker Hub): 20 484 Stars (Docker Hub): 2 Stars (GitHub): 82 Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 0.2.8 Downloads/month (npm): 914 Downloads/week (npm): 47 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 | Heroku | Flux Cloud |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | 82 (better) | 0 (worse) |
| Pulls (Docker Hub) (differs) | 20 484 | No figure on Docker Hub |
| Forks (GitHub) (differs) | 30 (better) | 0 (worse) |
| Last release (differs) | Not published | 2026-10-16 |
| Where it runs (differs) | On your machine (mcp/heroku) | Remote server (mcp.runonflux.com/mcp) |
| Transport (differs) | stdio | Streamable HTTP |
| Tools it declares (differs) | 34 | Not published |
| Environment variables it asks for (differs) | 1, secrets among them: 1 | 2, secrets among them: 2 |
| Licence (differs) | Apache-2.0 | Not stated |
| Repository (differs) | github.com/heroku/heroku-mcp-server | github.com/runonflux/flux-cloud-mcp |
| Changes in the last 7 days (differs) | 0 | 1 |
| First seen | 2026-10-11 | 2026-10-11 |
| Endpoint at the last check (differs) | no remote endpoint we check | Responded 26 h ago |
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
Heroku
Heroku Platform MCP Server using the Heroku CLI.
Flux Cloud
Deploy, pay for and manage apps on Flux Cloud, the decentralized cloud. Prices in USD.
How to run each
Heroku As a local MCP server: Docker image
claude mcp add --env "HEROKU_API_KEY=<YOUR_HEROKU_API_KEY>" --transport stdio heroku -- docker run -i --rm -e HEROKU_API_KEY mcp/herokuRequires: HEROKU_API_KEY (secret)
Flux Cloud As a remote MCP server
claude mcp add --transport http flux-cloud-mcp https://mcp.runonflux.com/mcpRequires: FLUX_ID_PRIVATE_KEY (secret), FLUX_PAYMENT_PRIVATE_KEY (secret)
Commands built only from what the marketplaces declare; the full set for every client is on each card.
Only Flux Cloud has a remote endpoint we check. How we check endpoints
Tools each declares
The marketplaces of Flux Cloud publish no list of tools, so we do not compare tools.
Settings each asks for
Only Heroku asks for
HEROKU_API_KEY (secret)
Only Flux Cloud asks for
FLUX_ID_PRIVATE_KEY (secret)FLUX_PAYMENT_PRIVATE_KEY (secret)
Settings as each marketplace publishes them. Asking for fewer is not better in itself.
What it can do: Heroku · What it can do: Flux Cloud · 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.