Revenue models are easy to list and hard to price. Here are seven with the actual monthly running cost attached — including the three that quietly stop working once volume goes up.
I cannot access that is a permissions statement, not a capability limit. This guide connects Codex to live tools: first server in under 10 minutes, which servers a beginner actually needs, config.toml field by field, and the security traps to avoid.
Already running MCP servers? This is the operator's manual: which server to reach for in each workflow, the pitfalls that bite in production, permissions, context bloat, leaked keys, surprise invoices, and the audit prompts that keep it lean and secure.
When I rebuild one with AI agents, you get the write-up — including the parts that didn't work. No weekly roundup, no "5 tools you need."