The CTO Playbook for Agentic Systems
A 71-page operating manual for engineering leaders whose software has started to reason, decide, and write the software that carries out those decisions. Written by our CTO, Andrew Stevens.
Tag
Ai
A 150B MoE on a Developer Laptop: An Upper Bound on What Faster Storage Buys You
18 minutes
A 150-billion-parameter mixture-of-experts model streamed from NVMe on an ordinary developer laptop with no usable GPU. Across a 200-token …
Tollgate v0.2.3: What Long-Context Pricing Does to a Spend Cap
11 minutes
Some models bill the whole request at a higher rate above a size threshold. What that does to a spend cap, and what changed in Tollgate …
Tollgate: Open-Source Hard Limits for LLM Spend
7 minutes
Tollgate is an open-source AI gateway and spend-control proxy. It prices every LLM request by token, reserves budget before the call, and …
Your System Prompt Is Not a Trust Boundary
16 minutes
A text-to-SQL agent's system prompt cannot enforce a data rule. sql-guard v0.2.0 puts the rule in a parser instead, and closes eight …
Arkhe: An Ontology Language for AI Systems
7 minutes
Two weeks ago I argued that your ontology is the asset and you should own it in a neutral, versioned form. Arguing is cheap. Arkhe v0.2 is …
Your Ontology Is the Asset. Stop Renting It Back.
10 minutes
Agentic AI post-mortems keep naming the same trio: determinism failures, hallucinations, and compliance gaps. An ontology retires all three, …
AI Safety Assurance Is Still Goodwill, Not Evidence
6 minutes
The UN's first scientific assessment of AI says safety assurance still runs on developer goodwill, not verification. Here is what …
The Regulatory Stack, Part 6: Building Under the CRA - A Reference Architecture
11 minutes
A production-grade reference architecture translating the GATE specification into a live runtime, using Apigee, Envoy Proxy, and …
The Regulatory Stack, Part 5: The Cyber Resilience Act Closes the Last Loophole
10 minutes
Think your AI agent escaped the EU AI Act's high-risk classification? The Cyber Resilience Act lands more than a year earlier, and it …
The Mythos Ledger, Part 5: The Resilient Cloud Manifesto
11 minutes
The series finale. Across four posts, we identified three machine-speed problems - discovery, intelligence, identity - that share the same …
The Mythos Ledger, Part 4: Identity in the Autonomous Enterprise and Why the Agent Is the New Perimeter
13 minutes
Non-human identities now outnumber humans by 40:1, 100:1, and in hyper-automated environments by 500:1. When AI agents do 80–90% of an …
The Mythos Ledger, Part 3: The Glasswing Strategy (From Defensive Coalitions to Cloud Immunity)
11 minutes
Anthropic's $100M Project Glasswing is the first attempt to flip the economics of AI-driven vulnerability research before offensive …