# Reference

> apiVersion policy, ID formats, the migration guide, privacy conventions, and the v2 deliverable boundary.

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LLMS index: [llms.txt](/processkit/llms.txt)

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apiVersion policy, ID formats, the migration guide, privacy conventions, and the v2 deliverable boundary.

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Section pages:

- [apiVersion Policy](/processkit/docs/reference/apiversion-policy/)
- [ID Formats](/processkit/docs/reference/id-formats/)
- [Version Migration](/processkit/docs/reference/migration/)
- [Privacy Tiers](/processkit/docs/reference/privacy/)
- [v2 Contracts](/processkit/docs/reference/v2-contracts/)