{
  "data": {
    "tool": {
      "category": "",
      "endpoint": "https://mcp.watermelon.sh/mcp",
      "jsonUrl": "https://www.anchorterminal.com/api/v1/tools/watermelon-ui.json",
      "kind": "mcp",
      "listed": "indexed",
      "liveUrl": "https://www.anchorterminal.com/api/v1/live/watermelon-ui.json",
      "markdownUrl": "https://www.anchorterminal.com/tools/watermelon-ui.md",
      "mcpTools": {
        "check": {
          "checker": "anchor-check/1.0",
          "totalTokens": 1091,
          "counts": {
            "error": 0,
            "note": 1,
            "warn": 7
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          "findings": [
            {
              "rule": "TC11",
              "severity": "warn",
              "tool": "compose_page",
              "message": "none of its 2 parameters has a description",
              "fix": "Describe each one: format, units, an example, and what happens when it's left out."
            },
            {
              "rule": "TC11",
              "severity": "warn",
              "tool": "get_catalog_entry",
              "message": "none of its 2 parameters has a description",
              "fix": "Describe each one: format, units, an example, and what happens when it's left out."
            },
            {
              "rule": "TC11",
              "severity": "warn",
              "tool": "get_component",
              "message": "none of its 2 parameters has a description",
              "fix": "Describe each one: format, units, an example, and what happens when it's left out."
            },
            {
              "rule": "TC11",
              "severity": "warn",
              "tool": "get_inspiration",
              "message": "none of its 3 parameters has a description",
              "fix": "Describe each one: format, units, an example, and what happens when it's left out."
            },
            {
              "rule": "TC11",
              "severity": "warn",
              "tool": "list_catalog_entries",
              "message": "none of its 4 parameters has a description",
              "fix": "Describe each one: format, units, an example, and what happens when it's left out."
            },
            {
              "rule": "TC11",
              "severity": "warn",
              "tool": "list_categories",
              "message": "its one parameter, kind, has no description",
              "fix": "Describe each one: format, units, an example, and what happens when it's left out."
            },
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              "rule": "TC11",
              "severity": "warn",
              "tool": "search",
              "message": "3 parameters without a description: category, kinds, limit",
              "fix": "Describe each one: format, units, an example, and what happens when it's left out."
            },
            {
              "rule": "TC24",
              "severity": "note",
              "message": "8 of 8 tools have no outputSchema",
              "fix": "Declare outputSchema for tools that return structured data, and return structuredContent that matches it."
            }
          ]
        },
        "checkedAt": "2026-10-04T22:25:55Z",
        "count": 8,
        "schemaTokens": 1091,
        "status": "ok",
        "tools": [
          {
            "name": "search",
            "title": "Search UI Catalog",
            "description": "Search the complete Watermelon UI catalog across components, animated components, blocks, dashboards, and templates.",
            "inputSchema": {
              "$schema": "https://json-schema.org/draft/2020-12/schema",
              "properties": {
                "category": {
                  "type": "string"
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                "kinds": {
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                      "components",
                      "animated-components",
                      "blocks",
                      "dashboards",
                      "templates"
                    ],
                    "type": "string"
                  },
                  "type": "array"
                },
                "limit": {
                  "maximum": 50,
                  "minimum": 1,
                  "type": "integer"
                },
                "query": {
                  "description": "Natural-language UI need, such as \"animated pricing card\".",
                  "minLength": 1,
                  "type": "string"
                }
              },
              "required": [
                "query"
              ],
              "type": "object"
            },
            "annotations": {
              "destructiveHint": false,
              "idempotentHint": true,
              "openWorldHint": false,
              "readOnlyHint": true
            }
          },
          {
            "name": "get_component",
            "title": "Get Component Source",
            "description": "Get a Watermelon entry with preview, dependencies, install command, and source files when an installable registry item is available.",
            "inputSchema": {
              "$schema": "https://json-schema.org/draft/2020-12/schema",
              "properties": {
                "kind": {
                  "enum": [
                    "components",
                    "animated-components",
                    "blocks",
                    "dashboards",
                    "templates"
                  ],
                  "type": "string"
                },
                "slug": {
                  "minLength": 1,
                  "type": "string"
                }
              },
              "required": [
                "slug"
              ],
              "type": "object"
            },
            "annotations": {
              "destructiveHint": false,
              "idempotentHint": true,
              "openWorldHint": false,
              "readOnlyHint": true
            }
          },
          {
            "name": "get_inspiration",
            "title": "Get UI Inspiration",
            "description": "Return 3-6 visually relevant Watermelon UI options for a design goal before choosing an implementation.",
            "inputSchema": {
              "$schema": "https://json-schema.org/draft/2020-12/schema",
              "properties": {
                "kinds": {
                  "items": {
                    "enum": [
                      "components",
                      "animated-components",
                      "blocks",
                      "dashboards",
                      "templates"
                    ],
                    "type": "string"
                  },
                  "type": "array"
                },
                "limit": {
                  "maximum": 6,
                  "minimum": 3,
                  "type": "integer"
                },
                "prompt": {
                  "minLength": 1,
                  "type": "string"
                }
              },
              "required": [
                "prompt"
              ],
              "type": "object"
            },
            "annotations": {
              "destructiveHint": false,
              "idempotentHint": true,
              "openWorldHint": false,
              "readOnlyHint": true
            }
          },
          {
            "name": "compose_page",
            "title": "Compose Page Plan",
            "description": "Create a source-backed page plan by selecting compatible Watermelon blocks for each requested section.",
            "inputSchema": {
              "$schema": "https://json-schema.org/draft/2020-12/schema",
              "properties": {
                "prompt": {
                  "minLength": 1,
                  "type": "string"
                },
                "sections": {
                  "items": {
                    "minLength": 1,
                    "type": "string"
                  },
                  "maxItems": 8,
                  "type": "array"
                }
              },
              "required": [
                "prompt"
              ],
              "type": "object"
            },
            "annotations": {
              "destructiveHint": false,
              "idempotentHint": true,
              "openWorldHint": false,
              "readOnlyHint": true
            }
          },
          {
            "name": "list_categories",
            "title": "List Categories",
            "description": "List Watermelon UI categories and accurate entry counts, optionally for one catalog kind.",
            "inputSchema": {
              "$schema": "https://json-schema.org/draft/2020-12/schema",
              "properties": {
                "kind": {
                  "enum": [
                    "components",
                    "animated-components",
                    "blocks",
                    "dashboards",
                    "templates"
                  ],
                  "type": "string"
                }
              },
              "type": "object"
            },
            "annotations": {
              "destructiveHint": false,
              "idempotentHint": true,
              "openWorldHint": false,
              "readOnlyHint": true
            }
          },
          {
            "name": "catalog_summary",
            "title": "Catalog Summary",
            "description": "Return top-level Watermelon catalog counts across content types.",
            "inputSchema": {
              "$schema": "https://json-schema.org/draft/2020-12/schema",
              "properties": {},
              "type": "object"
            },
            "annotations": {
              "destructiveHint": false,
              "idempotentHint": true,
              "openWorldHint": false,
              "readOnlyHint": true
            }
          },
          {
            "name": "list_catalog_entries",
            "title": "List Catalog Entries",
            "description": "Compatibility alias for listing Watermelon entries by kind.",
            "inputSchema": {
              "$schema": "https://json-schema.org/draft/2020-12/schema",
              "properties": {
                "category": {
                  "type": "string"
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                "kind": {
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                    "animated-components",
                    "blocks",
                    "dashboards",
                    "templates"
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                  "minimum": 1,
                  "type": "integer"
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                }
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              "required": [
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              ],
              "type": "object"
            },
            "annotations": {
              "destructiveHint": false,
              "idempotentHint": true,
              "openWorldHint": false,
              "readOnlyHint": true
            }
          },
          {
            "name": "get_catalog_entry",
            "title": "Get Catalog Entry",
            "description": "Compatibility alias for getting one Watermelon entry by kind and slug.",
            "inputSchema": {
              "$schema": "https://json-schema.org/draft/2020-12/schema",
              "properties": {
                "kind": {
                  "enum": [
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                    "animated-components",
                    "blocks",
                    "dashboards",
                    "templates"
                  ],
                  "type": "string"
                },
                "slug": {
                  "minLength": 1,
                  "type": "string"
                }
              },
              "required": [
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                "slug"
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              "type": "object"
            },
            "annotations": {
              "destructiveHint": false,
              "idempotentHint": true,
              "openWorldHint": false,
              "readOnlyHint": true
            }
          }
        ]
      },
      "name": "Watermelon UI",
      "note": "Indexed from the official MCP registry: facts and our own checks, not reviewed, so no score, grade or rank.",
      "packages": null,
      "pageJsonUrl": "https://www.anchorterminal.com/tools/watermelon-ui.json",
      "popularity": {
        "githubStars": 603
      },
      "registryName": "sh.watermelon/ui",
      "remotes": [
        {
          "type": "streamable-http",
          "url": "https://mcp.watermelon.sh/mcp"
        }
      ],
      "repository": "https://github.com/WatermelonCorp/watermelon-platform",
      "reviewed": false,
      "slug": "watermelon-ui",
      "source": "the official MCP registry",
      "sourceUrl": "https://registry.modelcontextprotocol.io/v0.1/servers?search=sh.watermelon/ui",
      "summary": "Search free React, Tailwind, and shadcn components, blocks, and dashboards; get installable source.",
      "updatedAt": "2026-09-30T05:06:24Z",
      "url": "https://www.anchorterminal.com/tools/watermelon-ui",
      "vendor": "watermelon.sh",
      "vendorUrl": "https://ui.watermelon.sh/developers/mcp",
      "version": "2.0.0",
      "websiteUrl": "https://ui.watermelon.sh/developers/mcp",
      "where": "hosted",
      "why": [
        "vendor",
        "popular"
      ]
    }
  },
  "kind": "anchor.page",
  "links": {
    "api": "https://www.anchorterminal.com/api/v1/index.json",
    "html": "https://www.anchorterminal.com/tools/watermelon-ui",
    "json": "https://www.anchorterminal.com/tools/watermelon-ui.json",
    "llms": "https://www.anchorterminal.com/llms.txt",
    "markdown": "https://www.anchorterminal.com/tools/watermelon-ui.md",
    "slim": "https://www.anchorterminal.com/tools/watermelon-ui.min.md"
  },
  "markdown": "# Watermelon UI\n\n\u003e Indexed, not reviewed: facts from the official MCP registry and our own checks. No score, grade or rank, and not in the rankings until the panel reviews it. How the index works: https://www.anchorterminal.com/indexed/\n\n- Kind: MCP server, by watermelon.sh (https://ui.watermelon.sh/developers/mcp)\n- Listed because: It's published in the registry under watermelon.sh, a namespace the registry only gives to whoever proves they control that domain. It's in real use: 603 GitHub stars.\n- What the official MCP registry says: Search free React, Tailwind, and shadcn components, blocks, and dashboards; get installable source.\n\n## Facts\n\n- MCP registry: `sh.watermelon/ui` 2.0.0\n- Endpoint: https://mcp.watermelon.sh/mcp (streamable HTTP)\n- Source: https://github.com/WatermelonCorp/watermelon-platform\n- Website: https://ui.watermelon.sh/developers/mcp\n- GitHub stars: 603\n- Registry entry updated: 2026-09-30\n\n## Tools\n\n- Tools it lists (8, about 1,091 tokens of context, `tools/list` without credentials over MCP 2026-07-28, checked 2026-10-04 22:25 UTC):\n  - `search` (read-only): Search the complete Watermelon UI catalog across components, animated components, blocks, dashboards, and templates.\n  - `get_component` (read-only): Get a Watermelon entry with preview, dependencies, install command, and source files when an installable registry item is available.\n  - `get_inspiration` (read-only): Return 3-6 visually relevant Watermelon UI options for a design goal before choosing an implementation.\n  - `compose_page` (read-only): Create a source-backed page plan by selecting compatible Watermelon blocks for each requested section.\n  - `list_categories` (read-only): List Watermelon UI categories and accurate entry counts, optionally for one catalog kind.\n  - `catalog_summary` (read-only): Return top-level Watermelon catalog counts across content types.\n  - `list_catalog_entries` (read-only): Compatibility alias for listing Watermelon entries by kind.\n  - `get_catalog_entry` (read-only): Compatibility alias for getting one Watermelon entry by kind and slug.\n- How its tools read to an agent (0 errors, 7 warnings, 1 note, about 1,091 tokens; rules at https://www.anchorterminal.com/check.md; not part of the score):\n  - warn TC11 compose_page: none of its 2 parameters has a description\n  - warn TC11 get_catalog_entry: none of its 2 parameters has a description\n  - warn TC11 get_component: none of its 2 parameters has a description\n  - warn TC11 get_inspiration: none of its 3 parameters has a description\n  - warn TC11 list_catalog_entries: none of its 4 parameters has a description\n  - warn TC11 list_categories: its one parameter, kind, has no description\n  - warn TC11 search: 3 parameters without a description: category, kinds, limit\n  - note TC24 server: 8 of 8 tools have no outputSchema\n\n- JSON: https://www.anchorterminal.com/api/v1/tools/watermelon-ui.json\n- Being indexed says nothing about quality, and nobody can pay for it. Ask for a review: https://www.anchorterminal.com/builders/#claiming\n",
  "meta": {
    "attribution": "Anchor Terminal (https://www.anchorterminal.com)",
    "docs": "https://www.anchorterminal.com/docs/",
    "generatedAt": "2026-10-05",
    "license": "CC-BY-4.0",
    "method": "https://www.anchorterminal.com/benchmark/",
    "methodology": "0.3",
    "openapi": "https://www.anchorterminal.com/openapi.json",
    "preview": false,
    "run": "2026-10-01",
    "runLabel": "October 2026 research run"
  },
  "page": {
    "breadcrumbs": [
      {
        "name": "Home",
        "url": "https://www.anchorterminal.com/"
      },
      {
        "name": "Terminal",
        "url": "https://www.anchorterminal.com/tools/"
      },
      {
        "name": "Indexed",
        "url": "https://www.anchorterminal.com/indexed/"
      },
      {
        "name": "Watermelon UI",
        "url": ""
      }
    ],
    "description": "Watermelon UI, an MCP server by watermelon.sh, listed from the official MCP registry. Indexed, not reviewed: facts and our own checks, no score or ranking. Search free React, Tailwind, and shadcn components, blocks, and dashboards; get installable source.",
    "facts": [
      "not reviewed",
      "not ranked",
      "facts only"
    ],
    "h1": "Watermelon UI",
    "image": "https://www.anchorterminal.com/assets/og/indexed.png",
    "path": "/tools/watermelon-ui",
    "published": "",
    "section": "indexed",
    "title": "Watermelon UI: MCP server, indexed from the official MCP registry",
    "toc": null,
    "updated": "2026-10-05",
    "url": "https://www.anchorterminal.com/tools/watermelon-ui"
  },
  "tokens": {
    "markdown": 950,
    "slim": 880
  },
  "version": 1
}