mcp-server · decantr-ai — Claude Code MCP server: install and use
This MCP server checks AI-made UI changes against a project’s components, styles, interaction rules, and source boundaries. It also supplies context and repair tools.
claude mcp add mcp-server -- npx -y @decantr/mcp-serverWhat mcp-server does
mcp-server connects a coding agent to local UI change control. It compares the code that changed with the authority already present in the project, including production source, components, styling, tests, local rules, and available runtime evidence.
The server exposes eight tools: decantr_project, decantr_contract, decantr_context, decantr_graph, decantr_registry, decantr_verify, decantr_repair, and decantr_contract_write. They cover project context, task preparation, graph and contract data, verification, and repair. The workflow runs locally and does not replace a router, component library, test suite, editor, or coding agent.
Install it through npx with @decantr/mcp-server. Verification uses the current Git worktree. If the app selection or Git scope cannot be proven, the result is not_proven rather than a passing conclusion.
What it helps with
- check a UI diff against project-owned rules
- compare edits with production components and styles
- prepare scoped context for an agent task
- trace a finding to its source and repair target
Example prompts for the agent
- Check the current UI diff against this project’s components, styles, and local rules.
- Prepare task context for adding saved actions to the feed screen, then show the relevant source files.
- Verify the latest UI change and repair findings without replacing the project’s component library.
How to install mcp-server
Platform CLI
claude mcp add mcp-server -- npx -y @decantr/mcp-serverPlatform CLI
codex mcp add decantr-ai-mcp-server -- npx -y @decantr/mcp-serverConfig file
{
"mcpServers": {
"decantr-ai-mcp-server": {
"command": "npx",
"args": [
"-y",
"@decantr/mcp-server"
]
}
}
}Config file
{
"servers": {
"decantr-ai-mcp-server": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@decantr/mcp-server"
]
}
}
}Platform CLI
gemini mcp add decantr-ai-mcp-server npx -y @decantr/mcp-serverStep by step, with commands for each platform: How to add an MCP server to Claude Code, Codex, Cursor, VS Code, Gemini CLI and more
Questions about mcp-server
How do I install mcp-server in Claude Code?
Run claude mcp add mcp-server -- npx -y @decantr/mcp-server. Restart the Claude Code session so the MCP tools are available.
What does mcp-server do?
It gives an agent eight tools for project context, UI change verification, and repair. Findings point back to project source and available evidence.
Which platforms support mcp-server?
It supports Claude Code, Codex, Cursor, GitHub Copilot, Windsurf (Devin Desktop), Cline, Zed, and Gemini CLI.
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