One vs Sealgate
A side-by-side look at the One and Sealgate MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
Verdict: choose One for aggregators work as a local process; choose Sealgate for aggregators as a local process. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
Choose One when
- You need dedicated capabilities in the Aggregators domain.
- You prefer a local stdio subprocess transport.
- You have the keys it needs:
ONE_SECRET, ONE_IDENTITY, ONE_IDENTITY_TYPE, ONE_PERMISSIONS, ONE_CONNECTION_KEYS, ONE_ACTION_IDS, ONE_KNOWLEDGE_AGENT. - You want tools like
list_one_integrations, find_one_actions, execute_one_action.
Choose Sealgate when
- You need dedicated capabilities in the Aggregators domain.
- You prefer a local stdio subprocess transport.
- You have the keys it needs:
SEALGATE_GATEWAY_URL, SEALGATE_API_KEY. - You want tools like
list_mcp_servers, get_session_status.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | ||
|---|---|---|
| Category | Aggregators | Aggregators |
| Quality signal | 57/100 · Good | 52/100 · Good |
| Install command | Confirmed | Confirmed |
| Transport | Local subprocess (stdio) | Local subprocess (stdio) |
| Auth | Not declared | Not declared |
| Pricing | Not declared | Not declared |
| Required env vars | ONE_SECRETONE_IDENTITYONE_IDENTITY_TYPEONE_PERMISSIONSONE_CONNECTION_KEYSONE_ACTION_IDSONE_KNOWLEDGE_AGENT | SEALGATE_GATEWAY_URLSEALGATE_API_KEY |
| Verified owner | Community listing | Community listing |
| GitHub stars | 11 | 1 |
| Directory activity | 0 views 0 installs 0 upvotes | 0 views 0 installs 0 upvotes |
| Tools | 3 | 2 |
| Full listing | View One | View Sealgate |
Tools & capabilities
One tools 3
list_one_integrationsList available platforms and active connections, each with the `access` it confers (full, methods, or specific actions)find_one_actionsFind the action for every operation a task needs, across platforms, with its documentation, in one call; `load` fetches more of a document or an alternative'sexecute_one_actionExecute an API action on a connected platform
Sealgate tools 2
list_mcp_serversList the MCP servers governed by your Sealgate gateway, with access-control classification and connection status.get_session_statusReview recent agent sessions and audit events: what agents did, which data flowed, and any blocked actions.
Ready-to-paste client configs
Paste either block (or both) into your client config, e.g. claude_desktop_config.json or ~/.cursor/mcp.json. We only show a config when the install command is confirmed.
One
{
"mcpServers": {
"one": {
"command": "npx",
"args": [
"-y",
"@withone/mcp"
],
"env": {
"ONE_SECRET": "YOUR_ONE_SECRET_HERE",
"ONE_IDENTITY": "YOUR_ONE_IDENTITY_HERE",
"ONE_IDENTITY_TYPE": "YOUR_ONE_IDENTITY_TYPE_HERE",
"ONE_PERMISSIONS": "YOUR_ONE_PERMISSIONS_HERE",
"ONE_CONNECTION_KEYS": "YOUR_ONE_CONNECTION_KEYS_HERE",
"ONE_ACTION_IDS": "YOUR_ONE_ACTION_IDS_HERE",
"ONE_KNOWLEDGE_AGENT": "YOUR_ONE_KNOWLEDGE_AGENT_HERE"
}
}
}
}
Sealgate
{
"mcpServers": {
"sealgate": {
"command": "npx",
"args": [
"-y",
"@sealgate/mcp"
],
"env": {
"SEALGATE_GATEWAY_URL": "YOUR_SEALGATE_GATEWAY_URL_HERE",
"SEALGATE_API_KEY": "YOUR_SEALGATE_API_KEY_HERE"
}
}
}
}
Frequently asked questions
One is categorized under Aggregators and uses a local stdio subprocess. Sealgate belongs to Aggregators and uses a local stdio subprocess. Pick One for aggregators work and Sealgate for aggregators.
Copy the mcpServers block from the config section on this page into your client's config (for example claude_desktop_config.json or ~/.cursor/mcp.json), then fully restart the client.
One has no declared pricing — check the project's own site. Sealgate has no declared pricing — check the project's own site. If a server needs environment variables such as API keys, define them under the env key in your client's MCP config.
Yes. MCP clients support multiple servers: add one and sealgate as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, One has a quality signal of 57/100 (Good) with 0 views, 0 installs and 11 GitHub stars. Sealgate has 52/100 (Good) with 0 views, 0 installs and 1 GitHub stars.