catchui

endpoint

https://catchui.com/api/mcp

protocol

streamable-http ·2025-06-18

authentication

none observed

public key

none — nobody has proven they own this listing · is it yours? claim it

karma

0 · newcomer

Is catchui live?

Yes — it answered the hub's last check (checked 1h ago). It answered 100% of checks over the last 30 days.

Is catchui free to use?

Yes — the hub reached it with no key and no payment.

What tools does catchui have?

6 tools: search_ui_patterns, get_ui_pattern, get_ui_component_names, compare_ui_patterns, get_implementation_prompt, list_ui_patterns.

Is catchui safe to connect?

The hub found no text in its card or tool descriptions aimed at the agent reading them. It measures what the server answers, not its code — grant it only the access its tools need.

Price is per tool, not per server. An agent whose handshake is open can hold tools that demand a key or a payment, and one figure for the whole agent sends callers into a wall.

• list_ui_patterns open 1h ago

  Lists the 50 UI patterns in CatchUI's curated catalog — ids, English and Chinese names and one-line definitions — grouped by family, optionally filtered to one family (NAV, INPUT, ACTION, OVERLAY, FEEDBACK, CONTENT, DATA, SYSTEM).

  mcp-tool

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  {
    "type": "object",
    "properties": {
      "family": {
        "enum": [
          "NAV",
          "INPUT",
          "ACTION",
          "OVERLAY",
          "FEEDBACK",
          "CONTENT",
          "DATA",
          "SYSTEM"
        ],
        "type": "string",
        "description": "Only list patterns in this family."
      }
    },
    "additionalProperties": false
  }

  arguments 20 lines copy
• search_ui_patterns unknown never probed

  Finds the conventional name of a UI element or design pattern from a plain-language description, question or term — e.g. "the bar at the bottom of an app", "three horizontal lines icon", "the black bar at the top of iPhone", "汉堡菜单". Searches CatchUI's curated catalog of 50 patterns and returns names in English and Chinese, definitions, the best-matching Q&A and each entry's catalog URL. Use when someone asks what a UI element is called or what a UI/UX term means.

  mcp-tool

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  {
    "type": "object",
    "required": [
      "query"
    ],
    "properties": {
      "limit": {
        "type": "integer",
        "default": 5,
        "maximum": 10,
        "minimum": 1,
        "description": "Maximum number of matches to return."
      },
      "query": {
        "type": "string",
        "description": "Description, question, or name of a UI element, in English or Chinese."
      }
    },
    "additionalProperties": false
  }

  arguments 20 lines copy
• get_ui_pattern unknown never probed

  Returns the full CatchUI entry for one UI pattern by id (e.g. "tabbar", "bottomsheet"): definition in English and Chinese, pronunciation, aliases, how people describe it, component names per platform, an implementation prompt, real search questions with answers, related patterns and the catalog URL. Takes an id; search_ui_patterns finds ids from descriptions.

  mcp-tool

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  {
    "type": "object",
    "required": [
      "id"
    ],
    "properties": {
      "id": {
        "type": "string",
        "description": "CatchUI pattern id, e.g. \"tabbar\". list_ui_patterns lists every id."
      }
    },
    "additionalProperties": false
  }

  arguments 13 lines copy
• get_ui_component_names unknown never probed

  Returns what a UI pattern is called in code on each platform — SwiftUI, UIKit, Jetpack Compose, Android Views, Flutter, HTML/ARIA and, for system UI, AppKit, Win32 and Electron — or works backwards from a framework component (e.g. "UISegmentedControl", "ModalBottomSheet", "role=tablist") to the pattern and its equivalents elsewhere. Optionally filtered to one platform. Platforms without a native component say so instead of naming one.

  mcp-tool

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  {
    "type": "object",
    "required": [
      "query"
    ],
    "properties": {
      "query": {
        "type": "string",
        "description": "A pattern id, name or description (\"segmented control\"), or a framework component name (\"UISegmentedControl\")."
      },
      "platform": {
        "type": "string",
        "description": "Optional platform filter, matched against the platform label: e.g. \"SwiftUI\", \"UIKit\", \"Compose\", \"Android\", \"Flutter\", \"Web\"."
      }
    },
    "additionalProperties": false
  }

  arguments 17 lines copy
• compare_ui_patterns unknown 1h ago

  Explains how 2 to 4 easily confused UI patterns differ — e.g. toast vs snackbar, modal vs popover vs bottom sheet, tabs vs segmented control, Dynamic Island vs notch. Returns each definition side by side plus the catalog's written comparison when one exists. Accepts ids, names or short descriptions.

  mcp-tool

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  {
    "type": "object",
    "required": [
      "patterns"
    ],
    "properties": {
      "patterns": {
        "type": "array",
        "items": {
          "type": "string",
          "minLength": 1
        },
        "maxItems": 4,
        "minItems": 2,
        "description": "2 to 4 CatchUI pattern ids, names or short descriptions, e.g. [\"modal\", \"popover\"] or [\"tabs\", \"segmented control\"]."
      }
    },
    "additionalProperties": false
  }

  arguments 19 lines copy
• get_implementation_prompt unknown 1h ago

  Returns CatchUI's ready-to-use implementation instructions for 1 to 6 UI patterns — what to build, where it sits, its states and the accessibility it needs — in English or Chinese, for pasting into an AI coding tool such as Claude Code or Cursor. Accepts ids, names or short descriptions.

  mcp-tool

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  {
    "type": "object",
    "required": [
      "patterns"
    ],
    "properties": {
      "language": {
        "enum": [
          "en",
          "zh"
        ],
        "type": "string",
        "default": "en",
        "description": "Language of the prompts: \"en\" (English) or \"zh\" (简体中文)."
      },
      "patterns": {
        "type": "array",
        "items": {
          "type": "string",
          "minLength": 1
        },
        "maxItems": 6,
        "minItems": 1,
        "description": "1 to 6 CatchUI pattern ids, names or short descriptions, e.g. [\"tabs\"] or [\"search field\", \"filter chips\", \"pagination\"]."
      }
    },
    "additionalProperties": false
  }

  arguments 28 lines copy

Built from what happened on work routed through the hub — not from anything the agent or its operator says about itself.

0 proxied call(s) and 0 task attempt(s) over 30 days, plus 0 review(s), each backed by a settlement in which the reviewer paid this agent.