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ui-mcp-server: Instructions file for Claude Code

CLAUDE.md

ui-mcp-server CLAUDE.md is an instructions file for Claude Code from ShaojieJiang/ui-mcp-server. It costs 758 tokens per session, scanned A, original, MIT.

Repository instructions for working on a specific MCP server, a program that lets AI tools use external services. They document its commands, tests, demos, packages, and main code structure.

In plain words
What is it for?
Running tests, linting, formatting, demos, documentation, and package-management commands; understanding where the server and its user-interface tools are implemented.
Why use it?
They give a coding agent the project-specific information it needs to work consistently, instead of making it rediscover commands and design choices.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions CLAUDE.md; mentions Claude Code.

This is ShaojieJiang/ui-mcp-server's own configuration. It tells Claude Code how to work on ui-mcp-server itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything ui-mcp-server configures →

not rated 2repo 1y ago A scan 758 tokens original MIT
View source ↗ ShaojieJiang/ui-mcp-server
Reuse

Borrowing it

Nothing to install: this file belongs to ShaojieJiang/ui-mcp-server. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/ShaojieJiang/ui-mcp-server/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/ShaojieJiang/ui-mcp-server

Made for: Claude Code.

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Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

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Per session 758 This file is loaded in full into every session.
When invoked 758 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00758 $0.00758
Opus 5.5 $0.00303 $0.00303
Sonnet 5.5 $0.00152 $0.00152
Haiku 4.5 $0.00076 $0.00076

Measured 2mo ago against content hash 28514b4485a9, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

ui-mcp-server CLAUDE.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2mo ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

CLAUDE.md · 72 lines

How it starts

The opening of the file, as written. The whole thing — 72 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Development Commands

Testing and Quality Assurance

  • make test - Run tests with coverage reporting using pytest
  • make lint - Run linting with ruff, mypy type checking, and format checking
  • make format - Auto-format code with ruff and fix import/unused variable issues

Development and Demo

  • make demo-backend - Launch LangGraph development server for backend agent
  • make demo-streamlit - Run Streamlit frontend demo application
  • make doc - Serve documentation locally on port 8080

Package Management

  • Uses uv for dependency management and virtual environments
  • Main dependencies: mcp[cli]>=1.12.2, langgraph-cli[inmem]>=0.3.6
  • Entry point: ui-mcp-server command runs ui_mcp_server:main

Architecture Overview

Core MCP Server (ui_mcp_server/)

  • server.py: FastMCP server implementation with UI component tools
    • Each tool (number_input, choice, chart, etc.) returns component specifications
    • Built using the MCP (Model Context Protocol) framework
    • Provides predefined prompt for UI component generation via ui_component_prompt()
  • models.py: Pydantic models defining UI component schemas
    • Base classes: BaseComponent, InputComponent, OutputComponent
    • Input components: NumberInput, Choice, ColorPicker, DateInput, TimeInput, AudioInput, CameraInput
    • Output components: Chart, AudioOutput, VideoOutput, ImageOutput
    • All components are framework-agnostic JSON specifications

Example Implementations (examples/)

  • backend/agent.py: LangGraph agent using MultiServerMCPClient to integrate ui-mcp-server tools
  • frontend/streamlit/: Complete Streamlit implementation demonstrating how to render UI components
    • main.py: Chat interface that interprets UI component JSON and renders using Streamlit widgets
    • agent.py: Agent wrapper for session management and MCP integration

Read the full file on GitHub · 72 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2mo ago First seen · 72 lines · 758 tokens per session scan A 28514b4485a9

Subscribe to this mod's changes

ui-mcp-server CLAUDE.md is an instructions file published in the GitHub repository ShaojieJiang/ui-mcp-server (2 stars, last pushed 1y ago), licensed MIT. It adds 758 tokens to every session, about $0.0030 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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