an open-source MCP browser that cuts HTML token bloat by 95% so local LLMs stop hallucinating web tasks
Setup
Choose your client, copy the config, then fill in any required environment variables.
claude mcp add substrate-browser -- npx -y substrate-browser~/.codex/config.toml
[mcp_servers.substrate-browser]
command = "npx"
args = ["-y", "substrate-browser"]
# codex mcp add substrate-browser -- npx -y substrate-browser~/.cursor/mcp.json
{
"mcpServers": {
"substrate-browser": {
"command": "npx",
"args": [
"-y",
"substrate-browser"
]
}
}
}.vscode/mcp.json
{
"servers": {
"substrate-browser": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"substrate-browser"
]
}
}
}~/.gemini/settings.json
{
"mcpServers": {
"substrate-browser": {
"command": "npx",
"args": [
"-y",
"substrate-browser"
]
}
}
}claude_desktop_config.json
{
"mcpServers": {
"substrate-browser": {
"command": "npx",
"args": [
"-y",
"substrate-browser"
]
}
}
}.trae/mcp.json
{
"mcpServers": {
"substrate-browser": {
"command": "npx",
"args": [
"-y",
"substrate-browser"
]
}
}
}