Kakunin MCP vs Vaara
A side-by-side look at the Kakunin MCP and Vaara MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
Verdict: choose Kakunin MCP for security work as a local process; choose Vaara for security as a local process. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
Choose Kakunin MCP when
- You need dedicated capabilities in the Security domain.
- You prefer a local stdio subprocess transport.
- Its auth model fits you: API key required.
- You have the keys it needs:
KAKUNIN_API_KEY, KAKUNIN_AGENT_ID. - You want tools like
verify_agent_scope, check_risk_score, audit_log_append.
Choose Vaara when
- You need dedicated capabilities in the Security domain.
- You prefer a local stdio subprocess transport.
- Its auth model fits you: No auth required.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | ||
|---|---|---|
| Category | Security | Security |
| Quality signal | 59/100 · Good | 49/100 · Fair |
| Install command | Confirmed | Confirmed |
| Transport | Local subprocess (stdio) | Local subprocess (stdio) |
| Auth | API key required | No auth required |
| Pricing | Freemium | Free |
| Required env vars | KAKUNIN_API_KEYKAKUNIN_AGENT_ID | None listed |
| Verified owner | Community listing | Community listing |
| GitHub stars | 1 | 15 |
| Directory activity | 5 views 0 installs 0 upvotes | 1 views 0 installs 0 upvotes |
| Tools | 3 | Not listed |
| Full listing | View Kakunin MCP | View Vaara |
Tools & capabilities
Kakunin MCP tools 3
verify_agent_scopeCheck whether this agent is authorised to perform an action before executing it. Verifies the active X.509 certificate, permitted_actions scope, financial limits, and revocation status.check_risk_scoreRetrieve the agent's rolling 30-day risk score, band (`low`/`medium`/`high`), drift trend, and actionable guidance. No input required.audit_log_appendAppend a behavioral event to the agent's immutable audit log. Returns risk score + transaction ID. Events scoring ≥ 0.85 auto-trigger a certificate revocation check.
Vaara tools
No tool names declared yet. Check the project README from the listing page.
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.
Kakunin MCP
{
"mcpServers": {
"kakunin-ai-kakunin-mcp": {
"command": "npx",
"args": [
"-y",
"@kakunin/mcp"
],
"env": {
"KAKUNIN_API_KEY": "YOUR_KAKUNIN_API_KEY_HERE",
"KAKUNIN_AGENT_ID": "YOUR_KAKUNIN_AGENT_ID_HERE"
}
}
}
}
Vaara
{
"mcpServers": {
"vaara": {
"command": "npx",
"args": [
"--upstream-arg",
"-y",
"--upstream-arg",
"@sap/mdk-mcp-server"
]
}
}
}
Frequently asked questions
Kakunin MCP is categorized under Security and uses a local stdio subprocess. Vaara belongs to Security and uses a local stdio subprocess. Pick Kakunin MCP for security work and Vaara for security.
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.
Kakunin MCP is listed as freemium — a free tier with paid plans. Auth: api key required. Vaara 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 kakunin-ai-kakunin-mcp and vaara as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, Kakunin MCP has a quality signal of 59/100 (Good) with 5 views, 0 installs and 1 GitHub stars. Vaara has 49/100 (Fair) with 1 views, 0 installs and 15 GitHub stars.