How do I build a reproducible update log when new evidence changes a prior source decision?

Build the log by recording each prior decision with its date, evidence basis, and search parameters, then adding a new dated entry whenever a search or record changes that decision, stating what changed and why. Cochrane's guidance on documenting searches and managing records and PRISMA 2020's reporting checklist both support keeping this trail explicit and traceable.

1. Open a log entry for the original decision. Record the date, the source or database searched, the search strategy and filters used, and the specific evidence that supported including or excluding the source. Cochrane describes documenting searches and managing records as part of review conduct; PRISMA 2020 asks reviewers to report what methods were used and what studies were found and included.
2. When a new search or record appears, add a new entry instead of editing the old one. State the date, the search parameters (database, query, filters, date range), the record found, and the reason it changes the prior decision. Keep the earlier entry intact so the sequence stays visible.
3. Note the decision point explicitly. Write whether the prior source is retained, replaced, or added alongside, and cite the evidence basis for that choice. This makes the change auditable during review or guideline work.
4. Version the log. Use dated versions or a revision history so reviewers can replay how the decision evolved from the original entry to the latest.
5. Re-check the search parameters against the reporting standard you follow. PRISMA 2020's checklist covers reporting why the review was done, what methods were used, and what studies were found and included; align log fields with those items so the log doubles as reporting support.

For metadata lookups, Crossref's API documentation describes bibliographic queries, filters, result selection, cursor paging, and polite use, which helps you record the exact query and filters behind each entry. WisPaper Scholar Agent supports longer literature-review tasks and can help organize the search and record trail you then log.