#API design

A bright protocol-specification archive room: pale ash shelving of cloth-bound spec volumes recedes along one wall, and on the facing wall a nickel-and-brass specimen case holds a chronological row of connector standards with the newest one held just above its empty mount

How AI Models Learned to Use Tools: A Protocol History

Four calling conventions, each dated to a real announcement: a manifest borrowed from web APIs, a schema built into the model call itself, incompatible framework wrappers, and a standard now governed by the vendors who once competed on incompatibility.

By Brecht Corbeel · August 12, 2026 · 15 min read

Folded paper signatures laid in gathering order along a bindery bench with one signature caught being lifted from the middle of the sequence

Foundation Models

Building on Frontier Model APIs: Effort, Context, Caching, and Failure Handling

A practical guide to the decisions that determine whether an application on a frontier model stays correct and affordable as the model underneath it changes without warning.

By Brecht Corbeel · August 8, 2026 · 10 min read

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