Design-first MCP for coding agents that improves websites with screenshot-grounded iteration.
Design-first MCP for coding agents that improves websites with screenshot-grounded iteration.
Coding agents can get a page functional. Frontend Design Loop makes it materially better with screenshot-grounded iteration and proof artifacts.
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Check the linked publisher documentation and your connected client's tool list. Names and availability can vary with the server version and account permissions.
| Tool | What it does |
|---|---|
| get_playbook | build_context |
| run_gates | preview_start |
| capture_screenshots | preview_stop |
| screenshot | grounded iteration plus proof artifacts is the differentiator |
| deterministic_passed | vision_pending |
| vision_scored | final_pass |
| run_dir | candidate_dir |
| screenshot_files | patch |
| auto | context skips common secret-bearing paths such as .env*, .git/, .aws/, .ssh/, .config/gcloud/, .docker/, .kube/, token-named files, and service-account-style JSON |
| frontend_design_loop_design | Use it when: - the page is functional but weak - the section structure is there but the design is not - you want the MCP to improve the page instead of only judging it |
| frontend_design_loop_eval | Use it when: - the host agent already has the patch - you want deterministic checks, screenshots, and artifact capture - you want the host agent to judge the result from returned screenshots |
| frontend_design_loop_solve | frontend_design_loop_solve still exists for advanced unattended workflows, but it is not the main public story. |
{
"mcpServers": {
"frontend-design-loop": {
"command": "uvx",
"args": ["frontend-design-loop-mcp"]
}
}
}Add to claude_desktop_config.json, then restart Claude Desktop.
Read, search and edit files inside allowed directories with the Model Context Protocol reference Filesystem server.
Retrieve version-aware library documentation and code examples with Context7 MCP, using resolve-library-id and query-docs.
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