Treat tools as authority
Each tool exposes actions or data; descriptions do not replace enforcement.
Agent Commerce & Security · PDF FIELD GUIDE · 2026
MCP Server Security Checklist
The MCP Server Security Checklist (SML-X402-011) is a four-page SCRIPTMASTERLABS field guide, $29 one-time, covering MCP trust boundaries, tool permissions, transport and output controls. Its core model: treat tools as authority, separate tenants and principals, validate every input, and constrain outputs — because security depends on deployment context, not on the checklist.
Trust boundaries, tool permissions, transport and output controls
SML-X402-0114-PAGE PDF$29 ONE TIMEINSTANT DELIVERY
THE OUTCOME
What risk does the MCP Server Security Checklist help you reduce?
It helps reduce the chance that an MCP tool becomes an unbounded bridge from untrusted content to sensitive systems.
Use this guide to: Review MCP server access, tool permissions, input handling and security boundaries.
CORE MODEL
What are the four ideas before action?
Four ideas: treat tools as authority, separate tenants and principals, validate every input, and constrain outputs.
Separate tenants and principals
Propagate verified identity and prevent one session from crossing data boundaries.
Validate every input
Schemas help, but servers must still enforce lengths, destinations, paths and business rules.
Constrain outputs
Secrets, internal errors and oversized untrusted content should not flow back unchecked.
ACTION CHECKLIST
What are the six steps of the review process?
Inventory tool permissions, require authentication where needed, enforce server-side authorization, protect against SSRF and path traversal, redact secrets from logs and errors, and rate-limit and audit sensitive tools.
- Inventory tool permissions
- Require authentication where needed
- Enforce server-side authorization
- Protect against SSRF and path traversal
- Redact secrets from logs and errors
- Rate-limit and audit sensitive tools
PRIMARY SOURCES
How do you verify the moving parts?
The PDF includes a source map and explicit research boundary. Product and regulatory details can change; current official material controls.
x402 protocol documentation →x402 specification repository →Model Context Protocol specification →OWASP API Security Top 10 →TRUTH BOUNDARY
Security depends on deployment context; perform threat modeling and independent testing.
AI tools assisted drafting and layout. SCRIPTMASTERLABS is responsible for editorial structure and source selection. No personalized investment, legal, tax, medical, regulatory, advertising or cybersecurity advice.
FAQ
What should you know before you buy?
What format is this product?
A four-page PDF field guide delivered immediately after successful Stripe Checkout.
Is this a subscription?
No. It is a one-time purchase.
Does this guarantee a result?
No. Security depends on deployment context; perform threat modeling and independent testing.
What is included in this PDF?
4 pages in a fixed-layout PDF: Access control, tool permissions, input handling and security checks. This is a compact field guide with review checks and source notes.