Sachi Shah

Sachi Shah·Aug 20, 2026

Original excerpt

Some of the world’s largest companies build their agents on Sierra: hundreds of people working inside a single agent, across hundreds of journeys, serving millions of customers. A small change to the agent can instantly reshape how it behaves with every customer. At that scale, releasing an agent safely can’t rely on an informal check or on someone remembering to double-check a change.

Sachi Shah·Aug 20, 2026

Original excerpt

It catches the issues that are easy to miss and expensive to ship: a tool your prompt references but never made available, conflicting instructions to the agent, a lookup tool doing an action tool’s job, a response that works on screen but falls apart on a call, or a sensitive-data lookup with insufficient authentication. Checks are prioritized by severity, helping teams distinguish issues likely to impact customers from lower-priority quality improvements, and most come with a suggested fix from Ghostwriter that can be applied in place.

Sachi Shah·Aug 20, 2026

Original excerpt

Our new split traffic releases let organizations incrementally roll out a release to a portion of customer traffic before expanding it to everyone — the same canary strategy software teams have relied on for years. If you’ve upgraded your model, redesigned authentication, or made a sweeping behavioral change, you can verify the release behaves as expected before rolling it out more broadly. A large airline, travel marketplace, and fintech company are already using split traffic to control how rollouts reach their customers.