https://www.axl-devhub.me/en/blog Axel Cuevas, backend & AI engineer from Santo Domingo, DR. Warehouse systems, payment rails and permission-gated AI agents in TypeScript and Python. en-us axeljcuevast@gmail.com (Axel Cuevas) axeljcuevast@gmail.com (Axel Cuevas) Tue, 06 Oct 2026 00:00:00 GMT https://www.axl-devhub.me/en/blog/mcp-tool-list-is-the-permission-check https://www.axl-devhub.me/en/blog/mcp-tool-list-is-the-permission-check How I put a warehouse system inside Claude and ChatGPT without giving any model more access than the person using it: one MCP server inside the existing API, tools gated at registration, an audience check on every token, and a write ledger for agent retries. Tue, 06 Oct 2026 00:00:00 GMT axeljcuevast@gmail.com (Axel Cuevas) MCPModel Context ProtocolOAuth 2.1AI agentsNestJSsecurityauthorization