Most developer-documentation advice agrees on one point: organize by the developer's journey, not by the product's own resource list. Mintlify's own navigation guide sets this out as a table, feature-centric against journey-centric, and recommends the second. GOV.UK's API documentation guidance goes further, building task-based sections from user research. Neither one measures the journey from what developers actually did. Both assume it: one from a generic template, the other from an interview.
This pack measures it instead. The worked example is Ledgerly Pay, an invented payments API with six documented resources. Checking 240 sandbox integrations that reached a first live charge against their own call order found two resources touched earlier than the spec documents. Payment Methods moved one step early. Webhooks moved three steps early, the largest single displacement of the six. The Integration Step Register records each resource's documented position, its measured position, and the gap between them, so a reorder ships with a number behind it, not a hunch.
The Common Error Register is the confirmation layer. Before the guide was reordered, those two displaced steps accounted for 163 of 312 support tickets in one quarter, 52.2 percent. One was an invoice failing with no default payment method. The other was a signature check failing on a genuine event because the secret was set too late. After reordering, the same two categories fell to 27 of 176 tickets in an equal-volume quarter, an 83.4 percent drop, while every other category held flat. Whether the reference still matches the product is the documentation audit.
API Integration Guide Template