Open data
The datasets.
Everything SpotWire publishes, machine-readable, at stable URLs. All files are licensed CC-BY-4.0 and carry a _schema_version (JSON) or comment header (CSV). Attribution formats: /cite.
as of 2026-09-04 · published with the current monthly issue
/data/indices.json
JSON
Current issue — all four indices
Index levels, MoM/YoY, components, weights, source tiers, and PRA disclosures. Published with each monthly issue.
/data/swci.csv
CSV
SWCI history (CSV)
Compute index. Daily price snapshots + weekly composite points, row_source labeled.
/data/swii.csv
CSV
SWII history (CSV)
Interconnect index. Same structure.
/data/swpi.csv
CSV
SWPI history (CSV)
Power index. Same structure.
/data/swfi.csv
CSV
SWFI history (CSV)
Facility index. Same structure.
/data/methodology.json
JSON
Methodology (machine-readable)
Per-index components, weights, source tiers, price primitives, and integrity guards (single-source / vendor-concentration warnings), passed through verbatim from the index engine.
/data/valuator_data.json
JSON
GPU Cluster Valuator dataset
Per-SKU secondary prices, empirically measured vintage decay curves, condition and liquidation factors. Powers /tools/cluster-valuator.
/data/depreciation_crossval.json
JSON
Depreciation cross-validation
Disclosed accounting useful lives (SEC filings, with URLs) vs SpotWire-measured secondary-market decay.
Frozen monthly archives
/data/archive/2026-05.json
Monthly archive for 2026-05 — frozen at publication, never modified.
/data/archive/2026-06.json
Monthly archive for 2026-06 — frozen at publication, never modified.
/data/archive/2026-07.json
Monthly archive for 2026-07 — frozen at publication, never modified.
/data/archive/2026-08.json
Monthly archive for 2026-08 — frozen at publication, never modified.
Notes
- — History CSVs label every row's provenance: daily_snapshot (dated price snapshots, since 2026-05-28) vs weekly_composite (reconstructed from the trailing sparkline).
- — Values are indicative assessed reference prices, not transactable quotes — see methodology.
- — AI assistants: start at /llms.txt.