OpenZeppelin Solidity Contracts vs 0x
OpenZeppelin Solidity Contracts is an MCP server published by docker. Marketplaces we read that list it: 1 (Docker MCP Catalog). 0x is a plugin bundle for AI coding tools published by 0xProject. Marketplaces we read that list it: 1 (Claude Code: claude-plugins-community). As of our marketplace pass on 2026-10-15. 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 |  0x | |
|---|---|---|
| Docker MCP Catalog | Listed Version: not stated No figure published Not marked · First seen |
Not listed |
| Claude Code: claude-plugins-community | Not listed | Listed Version: 1.0.0 Forks (GitHub): 0 Stars (GitHub): 3 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 Solidity Contracts | 0x |
|---|---|---|
| Marketplaces that list it | 1 | 1 |
| Stars (GitHub) (differs) | No figure on GitHub | 3 |
| Forks (GitHub) (differs) | No figure on GitHub | 0 |
| Last release | Not published | Not published |
| Where it runs (differs) | Remote server (mcp.openzeppelin.com/contracts/solidity/mcp) | Remote server (docs.0x.org/_mcp/server) |
| Transport | Streamable HTTP | Streamable HTTP |
| Tools it declares (differs) | 8 | Not published |
| Environment variables it asks for | Not published | Not published |
| Parts of the bundle (differs) | Not a bundle | 3 |
| Licence (differs) | Apache-2.0 | MIT |
| Repository (differs) | Not stated | github.com/0xproject/0x-ai |
| 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 | Responded 13 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
OpenZeppelin Solidity Contracts
Access to OpenZeppelin Solidity Contracts.
0x
Guide developers through swapping ERC-20 tokens using the 0x API. Covers standard swaps via AllowanceHolder and Permit2 as well as gasless swaps across 20+ EVM chains — walking through price quotes, approvals, EIP-712 signing, and transaction submission. Also helps integrate 0x swaps directly into your app with code samples.
How to run each
OpenZeppelin Solidity Contracts As a remote MCP server
claude mcp add --transport http openzeppelin-solidity https://mcp.openzeppelin.com/contracts/solidity/mcp0x As a Claude Code plugin
/plugin marketplace add anthropics/claude-plugins-community
/plugin install 0x@claude-communityCommands built only from what the marketplaces declare; the full set for every client is on each card.
Only 0x has a remote endpoint we check. How we check endpoints
Tools each declares
The marketplaces of 0x publish no list of tools, so we do not compare tools.
Settings each asks for
Neither one's marketplaces publish the settings it asks for.
What it can do: OpenZeppelin Solidity Contracts · What it can do: 0x · 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.