OpenAI's 12-hour prompt caching: when the higher write price pays off
OpenAI now offers a 12-hour cache lifetime at 2.5 times the input price. The break-even point, a worked example, and the billing details to check first.
Blog tag
#Platform engineering
Internal platforms and paved roads, including for AI tools.
Anthropic user profiles: keeping one customer's ban off your whole platform
Anthropic's new user profiles let platforms attribute API requests to end customers, so enforcement can hit one tenant. What to send, and what is not live yet.
Copilot model policies now have a REST API: managing model access as code
GitHub's new endpoints read and set which Copilot models each enterprise, team, app and organisation may use. How the policy states work and what to automate.
Copilot managed settings can now fail closed: forced refresh and minimum versions
Copilot clients can now be made to fetch current policy at startup and refuse to run on a stale copy. What that buys, what it costs, how to roll it out.
Stateless MCP in production: running old and new protocol versions side by side
Azure MCP Server 3.0 and Red Hat's MCP gateway now speak the 2026-07-28 protocol. What their releases show about version negotiation, lost features and audit.
MCP Server Cards: what discovery before connection means for operators
SEP-2127 lets remote MCP servers publish a static card that clients find before connecting. What a card holds, what it leaves out, and the rules to set now.
5 min read
NCSC's sandbox maturity levels for agentic AI, explained for engineering leads
The NCSC grades agent sandboxes on two four-level ladders, network and compute. How to use them as a scorecard now that local agent sandboxes are shipping.
5 min read
NVIDIA OpenShell and the case for agent controls outside the harness
NVIDIA's open-source OpenShell enforces agent policy outside the model and harness. What version 0.1.0 does, what is only a reference design, and what to copy.
5 min read
The stateless MCP specification: what changes for teams running MCP servers
MCP 2026-07-28 drops sessions, adds routing headers, hardens authorisation and deprecates features. What platform and security teams need to plan for.
5 min read
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