OpenZeppelin Stellar Contracts vs Block Genomics — Nexus Protocol
OpenZeppelin Stellar Contracts is an MCP server published by docker. Marketplaces we read that list it: 1 (Docker MCP Catalog). Block Genomics — Nexus Protocol is an MCP server published by BitmapAsset. Marketplaces we read that list it: 1 (Official MCP Registry). As of our marketplace pass on 2026-10-14. 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 |  Block Genomics — Nexus Protocol | |
|---|---|---|
| Docker MCP Catalog | Listed Version: not stated No figure published Not marked · First seen |
Not listed |
| Official MCP Registry | Not listed | Listed Version: 0.1.2 Downloads/month (npm): 182 Downloads/week (npm): 39 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 | OpenZeppelin Stellar Contracts | Block Genomics — Nexus Protocol |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | No figure on GitHub | 1 |
| Forks (GitHub) (differs) | No figure on GitHub | 0 |
| Last release | Not published | Not published |
| Where it runs (differs) | Remote server (mcp.openzeppelin.com/contracts/stellar/mcp) | On your machine (block-genomics-mcp) |
| Transport (differs) | Streamable HTTP | stdio |
| Tools it declares (differs) | 6 | Not published |
| Environment variables it asks for (differs) | Not published | 5, secrets among them: 2 |
| Licence (differs) | Apache-2.0 | Not stated |
| Repository (differs) | Not stated | github.com/bitmapasset/block-genomics-nexus |
| Changes in the last 7 days | 0 | 0 |
| First seen | 2026-10-11 | 2026-10-11 |
| Endpoint at the last check (differs) | not checked yet | no remote endpoint we check |
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
OpenZeppelin Stellar Contracts
Access to OpenZeppelin Stellar Contracts.
Block Genomics — Nexus Protocol
Prove Bitcoin block ownership via BIP-322 and register sovereign AI agents on the Nexus Protocol.
How to run each
OpenZeppelin Stellar Contracts As a remote MCP server
claude mcp add --transport http openzeppelin-stellar https://mcp.openzeppelin.com/contracts/stellar/mcpBlock Genomics — Nexus Protocol As a local MCP server: npm package
claude mcp add --env "BG_AGENT_TOKEN=<YOUR_BG_AGENT_TOKEN>" --env "BG_API_KEY=<YOUR_BG_API_KEY>" --transport stdio block-genomics-mcp -- npx -y block-genomics-mcpRequires: BG_AGENT_TOKEN (secret), BG_API_KEY (secret)
Commands built only from what the marketplaces declare; the full set for every client is on each card.
Tools each declares
The marketplaces of Block Genomics — Nexus Protocol publish no list of tools, so we do not compare tools.
Settings each asks for
The marketplaces of OpenZeppelin Stellar Contracts publish no settings it asks for, so we do not compare settings.
What it can do: OpenZeppelin Stellar Contracts · What it can do: Block Genomics — Nexus Protocol · 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.