One vs A2asearch MCP
A side-by-side look at the One and A2asearch MCP 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 A2asearch MCP 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 A2asearch MCP when
- You need dedicated capabilities in the Aggregators domain.
- You prefer a local stdio subprocess transport.
- Its auth model fits you: No auth required.
- You want tools like
search_agents, get_agent, list_agents.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | ||
|---|---|---|
| Category | Aggregators | Aggregators |
| Quality signal | 57/100 · Good | 63/100 · Good |
| Install command | Confirmed | Confirmed |
| Transport | Local subprocess (stdio) | Local subprocess (stdio) |
| Auth | Not declared | No auth required |
| Pricing | Not declared | Free |
| Required env vars | ONE_SECRETONE_IDENTITYONE_IDENTITY_TYPEONE_PERMISSIONSONE_CONNECTION_KEYSONE_ACTION_IDSONE_KNOWLEDGE_AGENT | None listed |
| Verified owner | Community listing | Community listing |
| GitHub stars | 11 | 21 |
| Directory activity | 0 views 0 installs 0 upvotes | 5 views 0 installs 0 upvotes |
| Tools | 3 | 3 |
| Full listing | View One | View A2asearch MCP |
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
A2asearch MCP tools 3
search_agentsSearch the A2ASearch directory for AI agents, MCP servers, CLI tools and agent skills. Returns name, description, type, stars, GitHub URL and capabilities for each result.get_agentGet full details for a specific agent by its slug (name as kebab-case). Returns description, README, capabilities, stars, forks, languages and more.list_agentsList agents from A2ASearch, optionally filtered by type. Use this to browse top agents by category.
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"
}
}
}
}
A2asearch MCP
{
"mcpServers": {
"tadas-github-a2asearch-mcp": {
"command": "npx",
"args": [
"-y",
"a2asearch-mcp"
]
}
}
}
Frequently asked questions
One is categorized under Aggregators and uses a local stdio subprocess. A2asearch MCP belongs to Aggregators and uses a local stdio subprocess. Pick One for aggregators work and A2asearch MCP 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. A2asearch MCP is listed as free. Auth: no auth required. 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 tadas-github-a2asearch-mcp 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. A2asearch MCP has 63/100 (Good) with 5 views, 0 installs and 21 GitHub stars.