War-game an SDK versioning policy by testing whether support capacity, review gates, and freeze deadlines still shrink soft cuts when several languages share one release train and the next partner chart is close.
SDK versioning policies fail when "supported" means a checkbox without a decision artifact, when teams dual-count a draft as both reviewed and live, and when money-adjacent partner paths still pin to one thin major because the map is incomplete. The review needs one written inventory of SDK surfaces, one owner who can deny a risky cut, and a documented consequence when a failed review ages past the deadline.
Assemble the versioning packet
List SDK surfaces by language, weekly call volume, review gate, last deprecation reason, owner of record, and evidence required to keep the policy. Attach open findings, overdue drafts, and any emergency skip in the last quarter. Name which surfaces are out of scope and why. If a payments-adjacent SDK is omitted, show the residual risk in the same packet.
Decide allow, revise, or hold in advance. Include the fields that compute overdue-review status so two reviewers reach the same label from the same exports.
Claim matrix
| Claim | Evidence required | Fail condition |
|---|---|---|
| Surface is staffed | Named maintainer roster and measured time-to-first-response | Roster is empty or still points to a single untested engineer |
| Cut is complete | Changelog export showing deprecated state for the claimed fields | Ticket closed while export still shows supported |
| Priority is unique | Sample versions proving no double-booked major | Priority invents uniqueness the train never enforced |
| Override is controlled | Logged use with time-bound restore of review | Shared override or unlogged use |
Walk four cases in Pingpong: a language still pinned to one overloaded major, a cut that left a partner path live without support review, a surface that mixed experimental and stable APIs, and a request to skip a money SDK because volume is rare. Start from the documented versioning language. Ask who can extend a freeze window and which export proves review. Any step that depends on an unnamed person becomes a versioning condition.
Replay one prior breaking-change incident under the proposed rules. If the incident would still age without a reverse owner, revise the rules before calling the policy ready.
Pair with the developer relations lead seat, an open-source CLA stress test, and a hackathon sponsorship review. More operating decisions live in the war-game decisions hub.
Close only when supported and blocked labels can be reproduced from stored exports without a verbal override.