Data and feeds

The same 792 published card categories as the pages, as machine-readable files. They change only when a new card directory release is installed (see the release history). catalogue.json and catalogue.csv include each card category’s Relicmark composite (value, likely range, confidence, status, counted sales and dates); the full sale lists stay on the card pages.

• JSON card data: one JSON object per card category, with the fields below.
• CSV card data: the same card categories as comma-separated values, one row each, with a subset of the fields (the columns listed below) and the page address in a url column.
• feed.xml: an Atom feed with one entry per card page.
• sitemap.xml: every indexable page.
• prices.json: the Relicmark composite, evidence counts and latest sale for every card category, with the time the prices were computed.

Fields in the JSON data

item_id

The ledger’s canonical item number for the card category.

revision

The ledger revision the page shows: the record’s current revision when its snapshot was taken.

slug

The page address under /cards/.

identity

The published identity: name, item type, season (year), set, card number, variant and grade category.

identity_statuses

The ledger’s evidence status for each identity value: supplied, confirmed or pending.

manufacturer_source

The manufacturer checklist the card category was matched to.

grade_authority_source

The grading-company reference the page names for the grade category.

grade_source

The page used in the review for the grade category; the same as grade_authority_source unless a further page was used.

grade_reference_tier

psa_line: a PSA per-card reference (a price-guide line or a certificate page). psa_standard: PSA’s grading standard, used where PSA’s public price guide had no line for the card when it was checked. psa_standard_unchecked: PSA’s grading standard; no PSA page for the card has been opened.

facts

In catalogue.json only: the maker, the team on the card, the league and the rookie-card status where a cited page gives them, each with that page’s address and name.

grade_reference_checked

For psa_standard, the date (UTC) on which PSA’s public price guide was checked; otherwise null (empty in the CSV).

snapshot_as_of

When the ledger snapshot behind the page was taken.

source_identity_status

The ledger’s overall identity status for the record: resolved or unresolved.

source_capture

snapshot: a pinned fetch of the ledger record. search: a ledger search result.

observation_total

Observations (completed sales, asking prices, accepted offers) the ledger held for the shown revision; null if not retained (empty in the CSV).

summary_status

The ledger’s comparison status at the snapshot, for example insufficient (How it works explains every status); null if not retained (empty in the CSV).

projection

The version of the public projection that built the entry.

Composite fields

composite_value, composite_currency, composite_low, composite_high, composite_confidence, composite_status, verified_sales, as_of, prices_computed_at, latest_counted_sale_date, sales_on_file. The Relicmark composite for the card category: an estimate from verified US-dollar sales of the exact card and grade in the last 18 months, not an appraisal. composite_value is null (empty in the CSV) when no sale qualifies. verified_sales is the number of sales counted in the composite; sales_on_file is every recorded sale of the card and grade, counted or not.

Columns in the CSV data

item_id, slug, url, name, season, set, variant, card_number, grade_category, grade_reference_tier, grade_reference_checked, manufacturer_source, grade_authority_source, grade_source, revision, snapshot_as_of, observation_total, summary_status, composite_value, composite_currency, composite_low, composite_high, composite_confidence, composite_status, verified_sales, as_of, prices_computed_at, latest_counted_sale_date, sales_on_file.

Citing a card page

Every card page has a “Cite this page” line after its ledger sections: its title, the ledger item number, the revision, the snapshot time and the page address. Quote them together, with the date you viewed the page; they identify the ledger record and revision the page showed. The same values are in the JSON data as item_id, revision and snapshot_as_of. Card categories added to Relicmark’s public ledger after the first 198 have no closed-test item number: their item_id is null, source_capture is public_ledger_record, and they are cited by address and revision.

Software and AI assistants can read the same facts from these files. A card page’s shared-ledger sections carry no valuation: amounts appear only as the ledger recorded them, and a comparison appears only when the ledger’s own rule is met. The separate price-history composite is a labelled estimate from source-reported sales, not an appraisal.

Fifteen categories added in supplement 2 cite issuer SEC filings. Their manufacturer_source and grade_authority_source are null; grade_reference_tier is issuer_reported. identity_source identifies the filing and identity_source_role distinguishes its role. item_id remains null because there is no closed-test item number. All identities are supplied and unresolved, with zero observations.