# Pagination snapshot-chain check

Build-time release reference. Runtime readiness, deployment, payment settlement and external indexing are not evaluated here. Prices are proposed; this file cannot authorize execution or payment.

Validate a supplied page chain for consecutive numbers, cursor continuity and cycles, fixed snapshot/query digests, and item-ID/content conflicts. Return a checkpoint only for a consistent chain. A terminal marker is not proof of a complete live dataset.

Release: 0.29.0. Built: 2026-10-06T15:38:00Z.

## Choose for
- Check pagination cursor continuity before handing a checkpoint to another agent
- Detect snapshot drift and repeated records in captured API pages

## Outside this profile
- Live negotiation, message delivery, queue consumption, remote pagination, artifact fetching or migration execution
- Authentication, signed provenance, authorization, schema compatibility proofs, or exactly-once guarantees
- Inferring absent versions, server state, missing history, semantic equivalence, or market uniqueness

Proposed nominal USD 0.003 per successful call; payer fees excluded. No verified runtime availability.

- [Exact release contract](/reference/services/pagination-chain-check.json)
- [Input schema](/reference/schemas/pagination-chain-check.input.json)
- [Output schema](/reference/schemas/pagination-chain-check.output.json)
- [Fixed example](/reference/examples/pagination-chain-check.json)
- [Complete HTML reference](/discover/tools/pagination-chain-check)