Open data
The card dataset behind CardLens, the change log and the lounge inventory as JSON, plus llms.txt for AI assistants. Free to use with attribution; every record carries its issuer source and review date.
| File | What it holds | Updated |
|---|---|---|
| /data/cards.json | 119 cards: fees, reward rules and caps, point values, milestones, lounge entitlements and conditions, forex markup, eligibility, sources, review date. | 2026-09-19 |
| /data/changes.json | 12 dated changes (devaluations, fees, policy) with sources and affected card ids. | 2026-09-19 |
| /data/lounges.json | 70 lounges at 42 airports with the access routes each honours. | 2026-09-16 |
| /llms.txt | Site map for language models: what CardLens is, how numbers are computed, and every page family with URLs. | 2026-09-19 |
Terms
Use it for analysis, articles or tools with a link back to card-lens.ai. Figures are estimates from public issuer terms and can lag issuer changes; the change log records what we have verified and when. Not financial advice.
Schema notes
Rates are value rates (rupees of realistic value per rupee spent) after applying points.value. Caps are rupees of reward value per month. Fees exclude GST; add 18%. Lounge spend is the prior-period spend condition, when any. See the methodology for how these become a score.