VisualSpec runs on your own machine — the client starts it, so there is no endpoint to ping. 34 installs a week from npm. Last commit 10 Sep 2026.
Structured, constraint-aware visual generation and deterministic layout for AI agents
We read the source, 3 d ago · rules 995398eba69f
What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.
const finalImagePath = path.join(outputDir, imageFileName);
Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.
We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.
This server runs on your own machine — install it with the package manager and the client starts it for you. Package name taken from the official registry entry.
claude mcp add visualspec -- npx -y @utkarshx27/visualspec
{
"mcpServers": {
"visualspec": {
"command": "npx",
"args": [
"-y",
"@utkarshx27/visualspec"
]
}
}
}
[mcp_servers.visualspec]
command = "npx"
args = ["-y", "@utkarshx27/visualspec"]
{
"mcpServers": {
"visualspec": {
"command": "npx",
"args": [
"-y",
"@utkarshx27/visualspec"
]
}
}
}
{
"servers": {
"visualspec": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@utkarshx27/visualspec"
]
}
}
}
Optional settings from the registry entry, left out of the block above:
OPENAI_API_KEY (Optional API key for OpenAI image generation), GEMINI_API_KEY (Optional API key for Google Gemini image generation).
A structural review layer for Python — baseline-aware, deterministic, built for CI and AI agents
Deterministic visual inspection for AI agents. Overlap, overflow, contrast, quality.
Structured thinking grids for AI agents: deterministic analysis frames, validation, learned traps
Financial reasoning infrastructure for AI agents: typed models, deterministic compilation, receipts
Deterministic UI extraction and screenshot diffing for AI coding agents.
Constitutional guardrails and loop detection for AI agents
Deterministic JSON hashing and EIP-712 attestations for AI agents via x402.
Stateful memory for AI agents. Temporal awareness, error loop detection, and preventive constraints.
Answers built from our own checks of this server.