AI Architecture Updates: September 24, 2026

1. Morgan Stanley Treats Agent-Facing APIs as Architecture as Code

Architecture. Jim Gough and Andreea Niculcea described how Morgan Stanley modernized its API program using CALM to express architecture as code, then layered MCP and Agent-to-Agent communication on top with automated governance enforced at deployment gates. The argument is that an API program built for human integrators does not survive contact with agents, and that the governance has to be machine-checkable rather than documented, because agents will call whatever the schema permits. Source

2. Graphify Turns a Codebase Into a Queryable Knowledge Graph for Agents

Architecture. Graphify is an open-source tool that converts codebases and unstructured data into knowledge graphs, aimed at the multi-file reasoning problem that defeats retrieval-only coding assistants. Recent updates improved parser coverage and cross-file symbol resolution. Community feedback described the architecture as promising but flagged integration friction in daily workflows, which is the usual verdict on graph-based context layers. Source

3. Modal Rebuilt Sandbox Infrastructure Off Kubernetes to Hit a Million Concurrent Sandboxes

Architecture. Modal staff engineers Colin Weld and Connor Adams detailed rebuilding their sandbox layer from scratch to support millions of concurrent sandboxes and tens of thousands of creations per second. The constraint that pushed them off Kubernetes is scheduling latency at creation time, which is the dominant cost when each agent turn wants its own isolated execution environment. Source