Variel MCP Server
by jeisenbergai.variel/mcp-serverv0.1.0
Generate your brand in-agent, then keep tokens, components, and copy on-brand over MCP.
context tax
queued
security
queued
cold start
queued
freshness
Slowing3mo ago
Install Variel MCP server
Install in Claude Code
claude mcp add jeisenberg -e BRAND_API_KEY='<brand-api-key>' -e ANTHROPIC_API_KEY='<anthropic-api-key>' -- npx -y @variel/mcp-serverInstall in Cursor
{
"mcpServers": {
"jeisenberg": {
"command": "npx",
"args": [
"-y",
"@variel/mcp-server"
],
"env": {
"BRAND_API_KEY": "<brand-api-key>",
"ANTHROPIC_API_KEY": "<anthropic-api-key>"
}
}
}
}Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project).
Install in Claude Desktop
{
"mcpServers": {
"jeisenberg": {
"command": "npx",
"args": [
"-y",
"@variel/mcp-server"
],
"env": {
"BRAND_API_KEY": "<brand-api-key>",
"ANTHROPIC_API_KEY": "<anthropic-api-key>"
}
}
}
}Settings → Developer → Edit Config (claude_desktop_config.json), then restart.
Install in VS Code
{
"servers": {
"jeisenberg": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@variel/mcp-server"
],
"env": {
"BRAND_API_KEY": "<brand-api-key>",
"ANTHROPIC_API_KEY": "<anthropic-api-key>"
}
}
}
}Add to .vscode/mcp.json in your workspace.
Install in Windsurf
{
"mcpServers": {
"jeisenberg": {
"command": "npx",
"args": [
"-y",
"@variel/mcp-server"
],
"env": {
"BRAND_API_KEY": "<brand-api-key>",
"ANTHROPIC_API_KEY": "<anthropic-api-key>"
}
}
}
}Add to ~/.codeium/windsurf/mcp_config.json.
Configuration
| Variable | Required | Secret | Description |
|---|---|---|---|
| BRAND_API_KEY | yes | yes | Your Variel project API key (bsk_…) to connect an existing brand. Get it from your Variel dashboard, or run `variel-mcp login` to provision one via browser sign-in (no copy-paste). You can also start keyless and generate a brand with generate_brand_kickoff. |
| VARIEL_API_URL | — | — | Override the Variel API base URL. Defaults to https://variel.ai. Optional — for self-hosted or staging. |
| ANTHROPIC_API_KEY | — | yes | Anthropic API key. Required only for grade_visual_quality, generate_component, and Tier-2 validate_copy. Optional for all other tools. |
Freshness
Slowing — last maintenance signal 3mo ago. The newest of the signals below sets the band.
Last commit (default branch)
no data · GitHub
Latest release
no data · GitHub
Package published
no data · npm/PyPI
Registry entry updated
2026-07-01 · 3mo ago · official registry · v0.1.0
FAQ
›How do I install the Variel MCP server in Claude Code?
Run: claude mcp add jeisenberg -e BRAND_API_KEY='<brand-api-key>' -e ANTHROPIC_API_KEY='<anthropic-api-key>' -- npx -y @variel/mcp-server. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.
›Does Variel require an API key?
Yes. It expects BRAND_API_KEY, ANTHROPIC_API_KEY, of which 2 are secrets.
›Can I use Variel as a remote (hosted) MCP server?
No hosted endpoint is published; it runs locally over stdio.
›Is Variel in the official MCP registry?
Yes, as ai.variel/mcp-server.