Onto
Rank #18,281io.github.ravixalgorithm/onto
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Onto is a Model Context Protocol (MCP) server published by ravixalgorithm. It ranks #18,281 of 132,046 servers tracked on MCP Toplist, and its repository has 1 GitHub stars. Onto is listed across 3 registries — Official MCP, PulseMCP and Glama, with 4 tracked versions. It was first listed on May 18, 2026 and most recently updated on Sep 4, 2026.
Ranks ahead of 113,765 of 132,046 servers on MCP Toplist.
Use Onto
No credentials or required configuration declared — add it to your MCP client and go.
claude mcp add --transport http onto https://api.buildonto.dev/mcpclaude mcp add onto -e "ONTO_API_KEY=<your ONTO_API_KEY>" -e "ONTO_API_BASE=<your ONTO_API_BASE>" -- npx -y @ontosdk/mcpReplace each placeholder with your own value before saving.
[mcp_servers.onto]
url = "https://api.buildonto.dev/mcp"Add to ~/.codex/config.toml.
[mcp_servers.onto]
command = "npx"
args = ["-y", "@ontosdk/mcp"]
[mcp_servers.onto.env]
ONTO_API_KEY = "<your ONTO_API_KEY>"
ONTO_API_BASE = "<your ONTO_API_BASE>"Add to ~/.codex/config.toml. Replace each placeholder with your own value before saving.
https://api.buildonto.dev/mcpSettings → Connectors → “Add custom connector”, then paste this URL.
{
"mcpServers": {
"onto": {
"command": "npx",
"args": [
"-y",
"@ontosdk/mcp"
],
"env": {
"ONTO_API_KEY": "<your ONTO_API_KEY>",
"ONTO_API_BASE": "<your ONTO_API_BASE>"
}
}
}
}Add to claude_desktop_config.json (Settings → Developer → Edit Config). Replace each placeholder with your own value before saving.
{
"mcpServers": {
"onto": {
"url": "https://api.buildonto.dev/mcp"
}
}
}Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (per project).
{
"mcpServers": {
"onto": {
"command": "npx",
"args": [
"-y",
"@ontosdk/mcp"
],
"env": {
"ONTO_API_KEY": "<your ONTO_API_KEY>",
"ONTO_API_BASE": "<your ONTO_API_BASE>"
}
}
}
}Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (per project). Replace each placeholder with your own value before saving.
{
"servers": {
"onto": {
"type": "http",
"url": "https://api.buildonto.dev/mcp"
}
}
}Save as .vscode/mcp.json in your workspace.
{
"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>"
}
}
}
}Save as .vscode/mcp.json in your workspace. Replace each placeholder with your own value before saving.
{
"mcpServers": {
"onto": {
"serverUrl": "https://api.buildonto.dev/mcp"
}
}
}Add to ~/.codeium/windsurf/mcp_config.json.
{
"mcpServers": {
"onto": {
"command": "npx",
"args": [
"-y",
"@ontosdk/mcp"
],
"env": {
"ONTO_API_KEY": "<your ONTO_API_KEY>",
"ONTO_API_BASE": "<your ONTO_API_BASE>"
}
}
}
}Add to ~/.codeium/windsurf/mcp_config.json. Replace each placeholder with your own value before saving.
{
"mcpServers": {
"onto": {
"url": "https://api.buildonto.dev/mcp"
}
}
}{
"mcpServers": {
"onto": {
"command": "npx",
"args": [
"-y",
"@ontosdk/mcp"
],
"env": {
"ONTO_API_KEY": "<your ONTO_API_KEY>",
"ONTO_API_BASE": "<your ONTO_API_BASE>"
}
}
}
}Replace each placeholder with your own value before saving.
Show your rank
Maintain this server? Add the live rank badge to your README — it updates automatically as the leaderboard changes.
[](https://mcptoplist.com/server/io.github.ravixalgorithm%2Fonto)<a href="https://mcptoplist.com/server/io.github.ravixalgorithm%2Fonto"><img src="https://mcptoplist.com/badge/io.github.ravixalgorithm%2Fonto.svg" alt="MCP Toplist: Top 25% of 132,046" /></a>Variants: append ?metric=score or ?metric=stars to the image URL.
Listed on 3 registries
ravixalgorithm
Available versions (4)
| Version | Published |
|---|---|
| 1.5.2 | Sep 4, 2026 |
| 1.5.0 | Jun 19, 2026 |
| 1.4.0 | Jun 19, 2026 |
| 1.1.2 | May 18, 2026 |
Frequently asked questions
- Who maintains Onto?
- Onto is maintained by ravixalgorithm, which publishes 1 MCP server (4 total versions) tracked on MCP Toplist.
- Is Onto listed on the Official MCP Registry?
- Yes — Onto is listed on the Official MCP Registry, alongside PulseMCP and Glama.
- How many versions does Onto have?
- MCP Toplist tracks 4 versions of Onto, most recently published on Sep 4, 2026.
- Where can I find the source code for Onto?
- The source code for Onto is hosted at github.com/ravixalgorithm/onto-mcp.
Do you run this server?
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