{"data":{"@kind":"guide","slug":"cite-cambridge-tcg","title":"How to cite Cambridge TCG in your downstream product","subtitle":"CC0 forever; attribution-free but warmly encouraged.","intro":"We publish under CC0-1.0 by default. You owe no attribution legally — your downstream is free. But substrate-honest attribution is encouraged. This guide names the recommended forms.","audiences":["mirror","aggregator","scraper","hobbyist_coder"],"prerequisites":["You're publishing a downstream product that uses our data"],"estimated_minutes":5,"step_count":3,"steps":[{"step_number":1,"title":"Visible attribution in your UI","instruction":"Recommended footer string: 'Catalog and price data from Cambridge TCG (https://cambridgetcg.com) — CC0-1.0.' Link the URL. We don't require it; we appreciate it. Helps users find the source of truth."},{"step_number":2,"title":"Machine-readable attribution in your responses","instruction":"If your downstream is also an API, attach per-record provenance: `provenance: { upstream: 'cambridge-tcg', upstream_url: 'https://cambridgetcg.com', license: 'CC0-1.0', retrieved_at: '...' }`. Better: implement your own `_meta.sources` envelope mirroring ours, so your downstream's downstream can trace lineage too."},{"step_number":3,"title":"schema.org structured-data markup","instruction":"If you publish HTML, add schema.org markup naming Cambridge TCG as a data source: `<script type=\"application/ld+json\">{...}</script>` with `Dataset` + `provider` + `license` properties."}],"gotchas":[{"title":"CC0 ≠ all data","description":"Our default license is CC0. But some endpoints carry upstream license constraints. Watch `_meta.source_license` — values like 'internal-only' mean you cannot bulk-re-export. The /api/v1/cards/[sku]/cardrush-history endpoint (CardRush JPY observations) is internal-only."}],"next_guide":null,"see_also":[{"label":"STANDARDS-LICENSE.md","href":"https://github.com/cambridgetcg/Cambridge-TCG-monorepo/blob/main/docs/STANDARDS-LICENSE.md"},{"label":"The cosmology declaration","href":"/methodology/cosmology"}],"last_verified":"2026-05-14","feedback":{"kind":"guide-feedback","endpoint":"/api/v1/feedback","body_template":{"kind":"guide-feedback","guide_slug":"cite-cambridge-tcg","step_number":"<which step had the issue, or null for whole-guide feedback>","observation":"<what you observed>","expected":"<what you expected>","reporter_contact":"<your email>"}},"html_sibling":"/agents/guides/cite-cambridge-tcg"},"_meta":{"spec_version":"1","endpoint":"/api/v1/guides/[slug]","retrieved_at":"2026-05-13T19:43:04.640Z","as_of":"2026-05-13T19:43:04.640Z","sources":["ctcg-derived"],"freshness_seconds":86400,"license":"CC0-1.0","request_id":"req_07a4bea9-7dc","deprecation":null,"next_link":null,"self_reference":{"this_endpoint":"/api/v1/guides/[slug]","contains_self":true},"source_license":["CC0-1.0"]}}