# tag-cert — TAG Grading DIG report lookup

Verifies TAG certs (1 letter + 7 digits) against the public DIG report https://my.taggrading.com/card/<cert> (robots.txt allows /card/; Firecrawl markdown of the client-rendered React page, 8 s wait). One request per known cert; the ~3M URLs in TAG's public dig*.xml sitemaps are not enumerated.

• certUrl(cert) / certFromUrl(url) (also tagd.co/<cert> short links).
• Output: catalog_item (name, set line → year/set/number, subset/variation, grade + label, TAG Score, rank and chronology in metadata, front/back images, identifiers.tag_cert) + population_report (byGrade = { <grade>: n, other: total-n }, total = total graded, reportDate = the page's "AS OF" date, metadata.population_scope = grade_and_total).
• Complements connectors/firecrawl/tag-pop (set-level population tables).
• Fixtures: data/fixtures/tag-cert/ — rebuild with capture.ts tag-cert colmenarez-bowman-chrome=V6153377 not-found=Z9999999.