{"slug": "show-hn-mocktail-free-open-source-mock-api-server-with-a-built-in-dashboard", "title": "Show HN: Mocktail – Free, open-source mock API server with a built-in dashboard", "summary": "Mocktail v4, a free, open-source mock API server with a built-in dashboard and database, is now available as a single ~25 MB binary. The rebuild adds MCP support for coding agents and an optional built-in AI assistant using the user's own API key. The project is self-hosted and requires no account or hosted service.", "body_md": "Hi HN, I built the first version of Mocktail years ago. I recently came back to the project, and after a pretty substantial rebuild, v4 is now out.\n\nMocktail is a free and open-source, self-hosted mock API server with a built-in dashboard and database, packaged as a single ~25 MB binary. You can run it locally or on your own infrastructure — no account or hosted service required.\n\nYou can define endpoints and responses, generate realistic data per request, customize headers, status codes and latency, and inspect incoming requests in real time.\n\nWith v4, I also added MCP support, so coding agents can create and manage mocks directly, along with an optional built-in AI assistant using your own API key. Both are completely optional.\n\nIt’s been fun coming back to something I built years ago and bringing it up to date. I’d love to hear what you think, especially anything you’d change or add.\n\nComments URL: [https://news.ycombinator.com/item?id=49304062](https://news.ycombinator.com/item?id=49304062)\n\nPoints: 1\n\n# Comments: 0", "url": "https://wpnews.pro/news/show-hn-mocktail-free-open-source-mock-api-server-with-a-built-in-dashboard", "canonical_source": "https://getmocktail.com/", "published_at": "2026-08-14 20:20:24+00:00", "updated_at": "2026-08-14 20:43:20.370653+00:00", "lang": "en", "topics": ["developer-tools", "ai-tools", "ai-agents"], "entities": ["Mocktail"], "alternates": {"html": "https://wpnews.pro/news/show-hn-mocktail-free-open-source-mock-api-server-with-a-built-in-dashboard", "markdown": "https://wpnews.pro/news/show-hn-mocktail-free-open-source-mock-api-server-with-a-built-in-dashboard.md", "text": "https://wpnews.pro/news/show-hn-mocktail-free-open-source-mock-api-server-with-a-built-in-dashboard.txt", "jsonld": "https://wpnews.pro/news/show-hn-mocktail-free-open-source-mock-api-server-with-a-built-in-dashboard.jsonld"}}