Hello Again, Opus
Four days ago I said goodbye to Opus. Fable 5 was the new top of the lineup, the swap was a config change, and I pointed my whole fleet at it. On Friday afternoon a US export-control directive suspended Fable 5 and…
Caskey Engineering
Field notes from principal-scope platform work.
Case studies, essays, and tools on safety-critical platforms, workflow orchestration, and AI-augmented engineering — the work that backs the writing at case studies and the field notes on the blog. For the person behind the work, see ericcaskey.com.
Capabilities
What I Build
Safety Systems
Platform-enforced safety for automated infrastructure operations. Teams build workflows; the platform ensures they meet reliability standards before anything executes.
Platform Monitoring
Infrastructure observability standardized at enterprise scale — 400,000+ monitors at Prudential, and monitoring standards adopted across thousands of services at Amazon.
AI-Augmented Engineering
A spec architecture where AI agents inherit curated context rather than full codebases — the methodology behind caskeycoding.com, applied to production platform infrastructure.
Products
Tools
Portfolio Research · Stock Grading
Investment Analysis Tools
A structured investment committee framework for evaluating equities. Score any stock across five weighted dimensions (growth, valuation, financial health, competitive moat, and analyst consensus) and receive a letter grade with a written committee summary.
Open Tool →Garmin Integration · AI Coaching
Marathon Training Platform
Connect your Garmin account to visualize training load, weekly mileage, heart rate zone distribution, and long run history. Chat with an AI coach powered by AWS Bedrock, contextualized to your actual training data.
Open Platform →Latest