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Previous Issues of
The Modern Engineer

Issue #30: MCP Tool Contract Gates for AI Systems
May 30, 2026
Treat live MCP servers as versioned tool contracts. Discover live schemas, replay frozen probes, and block risky drift before promotion.

Issue #29: Model Upgrade Gates for AI Systems
May 23, 2026
Treat model swaps as controlled experiments: frozen evals, shadow replay, deterministic scoring, and explicit promotion gates before an AI system changes models.

Issue #28: AGENTS.md and the Repository Control Plane for Coding Agents
May 16, 2026
Repository instruction files are becoming the control plane for AI-assisted coding: a short AGENTS.md map, deep docs as the system of record, and task-specific specs for execution.

Issue #27: Agent Interoperability with A2A and Microsoft Foundry on Azure Container Apps
May 9, 2026
A gateway that discovers, validates, and delegates to a remote specialist over A2A. Both agents run on Microsoft Foundry and deploy to Azure Container Apps from one image.

Issue #26: Trusted Agent Operations with Least-Privilege Tools and PII-Safe Context
May 2, 2026
Build a support agent workflow in C# with trusted vs untrusted content labels, deterministic tool authorization, approval-gated sensitive actions, and redacted audit storage.

Issue #25: Durable Agent Workflows with Policy-Bounded Execution
April 25, 2026
Build a durable local-first agent workflow in C# with narrow roles, deterministic policy-bounded execution, live runtime logs, and restart-safe state, using home repair as the concrete example.

Issue #24: Grounded Multi-Agent Research Review with Microsoft Agent Framework
April 18, 2026
Build a grounded local-first multi-agent research workflow in C# with deterministic retrieval, narrow agent roles, structured JSON contracts, and final citation validation.

Issue #23: AI Cost Engineering for Local Inference
April 11, 2026
Build a local-first inference gateway with exact cache keys, per-tenant budget reservation, sync-vs-batch routing, deferred execution, and measurable cost controls in C#.

Issue #22: Prompt Versioning and A/B Evaluation
April 4, 2026
Build a local-first prompt experiment harness with frozen eval cases, deterministic scoring, live LM Studio execution, and evidence-based prompt promotion.

Issue #21: Production Reliability Engineering for AI APIs
March 28, 2026
Build a local-first inference gateway with deterministic rate limiting, queue backpressure, retries, timeouts, circuit breakers, fallback routing, and measurable runtime reliability metrics.
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