--- title: "OpenZeppelin MCP server | Agent MCP Directory" description: "OpenZeppelin has an open MCP server with 9 tools and no authentication. Endpoint, auth type and tool list, checked by connecting on 4 November 2026." canonical: https://agentmcpdirectory.com/directory/openzeppelin-com site: "Agent MCP Directory" last_updated: 2026-11-05 section: "Directory entries" --- # OpenZeppelin MCP server | Agent MCP Directory > OpenZeppelin has an open MCP server with 9 tools and no authentication. Endpoint, auth type and tool list, checked by connecting on 4 November 2026. Source: https://agentmcpdirectory.com/directory/openzeppelin-com Site: Agent MCP Directory Last reviewed: 2026-11-05 # OpenZeppelin: MCP server, CLI and agent surfaces Yes: OpenZeppelin runs a public MCP server at mcp.openzeppelin.com that listed 9 tools to a client with no credentials on 4 November 2026. Examples: cairo-erc20, cairo-erc721, cairo-erc1155. It speaks streamable-http, protocol 2025-11-25. Ora's cached score for openzeppelin.com is 68, grade C, read on 5 November 2026. ## Fact sheet | Company | OpenZeppelin | | --- | --- | | Domain | openzeppelin.com | | Category | Developer Tools (Ora leaderboard category) | | MCP server | Verified (No authentication) | | Ora score | 68, grade C; Ora scanned the domain on 28 October 2026 and the cached score was read on 5 November 2026 from its score API (Ora's score page for openzeppelin.com, a vendor-published score) | | Company found through | the awesome-remote-mcp-servers list | | Last verified | 4 November 2026 | ## MCP server | Endpoint | https://mcp.openzeppelin.com/contracts/cairo/mcp | | --- | --- | | How it was found | listed in the awesome-remote-mcp-servers list | | Transport | streamable-http | | HTTP status | 200 | | Protocol version | 2025-11-25 | | Server | OpenZeppelin Cairo Contracts MCP Server 0.7.2 | | Capabilities | tools, resources, instructions | | Tools | 9 | | Resources | 9 | | Prompts | 0 | | Connected | 4 November 2026, 20:03 UTC | | Handshake time | 1,241 ms over 1 attempt | ### Tools listed 9 tools - cairo-erc20 - cairo-erc721 - cairo-erc1155 - cairo-erc6909 - cairo-account - cairo-multisig - cairo-governor - cairo-vesting - cairo-custom ### Connector log 2 connections on 4 November 2026, read-only methods only - 19:58:43Z https://mcp.openzeppelin.com/contracts/cairo/mcp sent initialize, notifications/initialized, tools/list, resources/list result verified (HTTP 200) 1407 ms - 20:03:54Z https://mcp.openzeppelin.com/contracts/cairo/mcp sent initialize, notifications/initialized, tools/list, resources/list result verified (HTTP 200) 1241 ms ## Authentication | Auth type | No authentication | | --- | --- | | Auth as listed by a registry | Open (a claim, not checked by connecting) | ### The sign-in route, step by step 1. Send the handshake to `https://mcp.openzeppelin.com/contracts/cairo/mcp` over streamable-http. Servers on the 2026-07-28 revision answer `server/discover`; older servers answer `initialize`. 2. Send `tools/list`, then `resources/list` and `prompts/list` if the capabilities name them. 3. Send no token. The connector sent none and the server answered, so any MCP client can read this list. 4. Calling a tool is a separate step this directory never takes. See [OAuth for MCP: client ID metadata documents and dynamic registration](https://agentmcpdirectory.com/guides/oauth-for-mcp-cimd-dcr/) for how each route works. ## CLI No CLI is on record for OpenZeppelin. The directory checks a package only where a source names one, so this is a floor: a company can ship a command line that no source read for this edition mentions. See [shipping a CLI agents can use](https://agentmcpdirectory.com/guides/ship-a-cli-for-agents/). ## Other agent surfaces | Surface | Result | | --- | --- | | OpenAPI file | No OpenAPI file at the root paths checked. | | WebMCP in the initial HTML | Not checked: the home page was not read by the shared crawl. | | MCP discovery file | Not checked: the domain is not in the shared crawl for this edition. | | A2A agent card | Not checked: the domain is not in the shared crawl for this edition. | | A2A agent card (older path) | Not checked: the domain is not in the shared crawl for this edition. | | agents.json | Not checked: the domain is not in the shared crawl for this edition. | | OAuth authorization server metadata | Not checked: the domain is not in the shared crawl for this edition. | | NLWeb endpoint | Not checked in this edition. | ## Registry listings | Registry | Listed | | --- | --- | | Official MCP Registry | No | | GitHub MCP Registry | No | | awesome-remote-mcp-servers | Yes | | Smithery | Not checked: Smithery's listing pages and search API were unavailable on 4 November 2026. | | Glama | Not checked: Glama's API needs a key and attribution terms. | Edition 4 November 2026 Method [How rows are verified](https://agentmcpdirectory.com/method/) Data [CSV and JSON](https://agentmcpdirectory.com/data/) Markdown [This page as markdown](https://agentmcpdirectory.com/directory/openzeppelin-com/index.md) ## Sources - [Ora score page for openzeppelin.com](https://ora.ai/score/openzeppelin.com?utm_source=agentmcpdirectory.com&utm_medium=referral&utm_campaign=entry), read 5 November 2026 (vendor-published score, scanned 28 October 2026, read from GET /api/score) - [Where OpenZeppelin was found](https://github.com/jaw9c/awesome-remote-mcp-servers), read 4 November 2026 - [OpenZeppelin website](https://openzeppelin.com), read 4 November 2026 - [Official MCP Registry API, the registry read for this edition](https://registry.modelcontextprotocol.io/v0/servers), read 4 November 2026 Last reviewed 5 November 2026