What is the Onto MCP server?
Clean Markdown and AI-readability scoring for any URL. Built for AI agents.
How to install Onto
Copy-paste configuration for popular MCP clients.
ONTO_API_KEYrequiredsecretYour Onto API key (get one at https://app.buildonto.dev/read/keys — free tier includes 1,000 requests/month).
ONTO_API_BASEOptional override for the Onto API base URL. Defaults to https://api.buildonto.dev.
{
"mcpServers": {
"onto": {
"command": "npx",
"args": [
"-y",
"@ontosdk/mcp"
],
"env": {
"ONTO_API_KEY": "<YOUR_ONTO_API_KEY>",
"ONTO_API_BASE": "<YOUR_ONTO_API_BASE>"
}
}
}
}{
"mcpServers": {
"onto": {
"command": "npx",
"args": [
"-y",
"@ontosdk/mcp"
],
"env": {
"ONTO_API_KEY": "<YOUR_ONTO_API_KEY>",
"ONTO_API_BASE": "<YOUR_ONTO_API_BASE>"
}
}
}
}{
"mcpServers": {
"onto": {
"command": "npx",
"args": [
"-y",
"@ontosdk/mcp"
],
"env": {
"ONTO_API_KEY": "<YOUR_ONTO_API_KEY>",
"ONTO_API_BASE": "<YOUR_ONTO_API_BASE>"
}
}
}
}{
"servers": {
"onto": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@ontosdk/mcp"
],
"env": {
"ONTO_API_KEY": "<YOUR_ONTO_API_KEY>",
"ONTO_API_BASE": "<YOUR_ONTO_API_BASE>"
}
}
}
}claude mcp add onto --env ONTO_API_KEY=<YOUR_ONTO_API_KEY> --env ONTO_API_BASE=<YOUR_ONTO_API_BASE> -- npx -y @ontosdk/mcpRelated MCP servers
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