MCP Servers for Claude: What We Learned Testing Them

Short summary

MCP extends Claude with filesystem, web browsing, and database access, enabling deeper AI integration beyond shallow chatbot usage. Testing revealed significant limitations: non-deterministic outputs across sessions, fragile web scraping on JavaScript-heavy sites, and dangerous write operations without guardrails. Each extension adds operational risk; start with one, scope access tightly, and enforce read-only database defaults.

• •MCP enables Claude integration with files, web, and databases—moving beyond shallow chat usage
• •Fragility increases with each extension; rate-limiting, async content, and authentication walls create failure modes
• •Security best practices: tight file scope, read-only DB defaults, and single-provider preference

Generated with AI, which can make mistakes.