Audited indie product business cases and pricing benchmarks, released as open data by ProofStack.
| File | Contents |
|---|---|
data/cases.json |
40+ audited business cases (count grows weekly; see generated_at in the data files): pricing tiers, revenue disclosures, market analysis, acquisition operations, what-to-copy / what-not-to-copy, and a source URL for every figure |
data/benchmarks.json |
Pricing benchmarks overall and per category: median first paid tier, price range, free-tier prevalence, paywall-capability distribution |
data/benchmarks.csv |
The benchmark table in CSV for spreadsheets |
- Every revenue and pricing claim links to a public source (pricing page, founder post, transparency dashboard) with an evidence grade (A/B/C) and observation date.
- Revenue that is not publicly disclosed is recorded as
unknown— never estimated. - Acquisition narratives come from first-party sources; cases not yet researched say so explicitly instead of carrying template text.
- Benchmarks are counted from pricing pages we opened and verified; products without a public price are excluded from the statistics.
Regenerated from the live library. The generated_at field in each file states the export time; the live versions are always at /api/cases and /benchmarks.
AI assistants can query this data directly (with citations) via the official MCP Registry entry app.vercel.proof-stack-lake/proofstack, or the endpoint:
https://proof-stack-lake.vercel.app/mcp
Docs: proofstack-mcp
AI-visibility check — test whether AI crawlers can actually read your site; results get a shareable scorecard and README badge.
CC BY 4.0. You may share and adapt this data for any purpose, including commercially, with attribution: credit "ProofStack" and link to https://proof-stack-lake.vercel.app.
Citation example:
Pricing data: ProofStack (https://proof-stack-lake.vercel.app), CC BY 4.0.