Aegis vs Rail Score
A side-by-side look at the Aegis and Rail Score MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
Verdict: choose Aegis for security work as a local process; choose Rail Score for security over a hosted endpoint. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
Choose Aegis when
- You need dedicated capabilities in the Security domain.
- You prefer a local stdio subprocess transport.
Choose Rail Score when
- You need dedicated capabilities in the Security domain.
- You prefer a remote HTTP/SSE transport.
- You want tools like
rail_evaluate, rail_check_compliance, rail_detect_injection.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | ||
|---|---|---|
| Category | Security | Security |
| Quality signal | 53/100 · Good | 43/100 · Fair |
| Install command | Confirmed | Confirmed |
| Transport | Local subprocess (stdio) | Remote HTTP/SSE |
| Auth | Not declared | Not declared |
| Pricing | Not declared | Not declared |
| Required env vars | None listed | None listed |
| Verified owner | Community listing | Community listing |
| GitHub stars | 14 | 0 |
| Directory activity | 2 views 0 installs 0 upvotes | 1 views 0 installs 0 upvotes |
| Tools | Not listed | 9 |
| Full listing | View Aegis | View Rail Score |
Tools & capabilities
Aegis tools
No tool names declared yet. Check the project README from the listing page.
Rail Score tools 9
rail_evaluateScore content across the 8 RAIL dimensions (optional `policy` enforcement)rail_check_complianceCheck against gdpr, ccpa, hipaa, eu_ai_act, india_dpdp, india_ai_govrail_detect_injectionDetect prompt injection in untrusted textrail_evaluate_tool_callAllow/warn/block a tool call before it runsrail_scan_tool_resultScan a tool's output for PII + injection, return redacted textrail_safe_regenerateIteratively regenerate content until it passes (slow)rail_dpdp_scanScan for Indian personal data under the DPDP Act 2023rail_dpdp_gateReal-time DPDP processing gate (allow/block/require_action)rail_dpdp_complianceDPDP workflow: emit, require, evidence, session, timers
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.
Aegis
{
"mcpServers": {
"getaegis-aegis": {
"command": "npx",
"args": [
"-y",
"@getaegis/cli"
]
}
}
}
Rail Score
{
"mcpServers": {
"rail-score": {
"url": "https://mcp.responsibleailabs.ai/mcp"
}
}
}
Frequently asked questions
Aegis is categorized under Security and uses a local stdio subprocess. Rail Score belongs to Security and uses a remote HTTP/SSE transport. Pick Aegis for security work and Rail Score 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.
Aegis has no declared pricing — check the project's own site. Rail Score 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 getaegis-aegis and rail-score as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, Aegis has a quality signal of 53/100 (Good) with 2 views, 0 installs and 14 GitHub stars. Rail Score has 43/100 (Fair) with 1 views, 0 installs and 0 GitHub stars.