complianceHowTo
MCP Security Best Practices
Secure MCP servers with auth, least privilege, tool approval, sandboxing, rate limits, and safe logging.
Quick Answer / TL;DR
Secure MCP by denying risky tools by default, validating schemas, isolating secrets, rate-limiting calls, logging safely, and requiring human approval for destructive actions.
Key Takeaways
- Least privilege first.
- Never trust tool arguments.
- Mask secrets in logs.
Baseline policy
Security starts with a clear boundary. Every server should know which resources it may read, which actions it may perform, and which users or clients may invoke it.
{
"auth": "required",
"rateLimit": "60/minute",
"sandbox": true,
"denyTools": ["shell.exec", "payments.refund"],
"requireApproval": ["write", "delete", "send_money"]
}MCP Security Best Practices FAQs
Direct answers for developers, operators, and Indian teams evaluating MCP.