# Chunk policy

`ChunkPolicy` carries `target_tokens`, `overlap_tokens`,
`respect_markdown_headings`, and `chunker_version`. Chunkers expose a
`policy_hash` so chunk IDs include the policy.

Canonical source:
[docs/superpowers/specs/2026-04-27-kb-final-form-design.md](../superpowers/specs/2026-04-27-kb-final-form-design.md), §3.5 + §7.1 + §7.2.