Proofstack

app.vercel.proof-stack-lakePublished by proof-stack-lake.vercel.appOfficial publisherv1.0.0Updated Nov 2, 2026

Audited indie product business cases with source-backed pricing, revenue and pricing benchmarks.

VerifiedStreamable HTTPWeb executableData & AnalyticsBusiness & Commerce

Overview

AI-generated overview

Remote MCP server exposing ProofStack's researched indie software business cases with source-graded pricing and revenue data, plus pricing benchmarks.

What you can do
  • Search case studies by keyword, category, business model or acquisition channel
  • Fetch a single case by slug: pricing tiers, paid trigger, revenue disclosures, what to copy and what not to copy, with source URLs and evidence grades
  • Read pricing benchmarks computed from published pricing pages: median first paid tier, free-tier prevalence, paywall-capability distribution
When to use it
Useful when researching indie or small software product business models, pricing decisions, or acquisition approaches and you want source-linked case material rather than generic advice. Not a substitute for financial due diligence.
Requirements
Remote Streamable HTTP endpoint; no authentication, environment variables or headers declared. An optional local evaluation adapter runs on Node.js 22 or later and forwards requests to the public endpoint.
Before you install
Read-only research data, but research depth, freshness and translation coverage vary by case and the material is explicitly not a financial audit; check each case's research status and sources before relying on claims. Undisclosed revenue is returned as unknown rather than estimated.

Installation

In SourceWeft

  1. Open Proofstack in the dashboard and add it to a workspace.
  2. Enable the server for the chats that should use its tools.

Web executable via Streamable HTTP. Remote servers run from the web runtime once configured in a workspace.

Use with an agent

Paste this prompt into Claude Code, Codex, Cursor or another agent — or into SourceWeft chat. The agent reads this server's install guide, shows you its publisher, endpoint and sign-in, and adds it to your client once you agree. Keys never go into a command.

Read https://sourceweft.com/mcp/app.vercel.proof-stack-lake%2Fproofstack/install.md and connect the MCP server it describes to my client. Before changing any config, show me its publisher, endpoint and sign-in method and wait for my OK. Never put an API key in a command or in a file I would commit; ask me where it should come from.

Read the install guide the agent follows

Other MCP clients

Add this to your client's mcpServers config.

{
  "mcpServers": {
    "proofstack": {
      "type": "http",
      "url": "https://proof-stack-lake.vercel.app/mcp"
    }
  }
}

README

ProofStack MCP Server

[AI-visibility check]

Remote Model Context Protocol server for ProofStack — a library of researched indie product cases with published pricing, revenue disclosures where available, and source links. Research depth, freshness, and translation coverage vary by case; this is not a financial audit.

Endpoint (Streamable HTTP, no auth required):

https://proof-stack-lake.vercel.app/mcp

Tools

ToolWhat it does
search_casesSearch the published product library by keyword, category, business model, or acquisition channel
get_caseFull case detail: pricing tiers, revenue disclosures, acquisition operations, what to copy / what not to copy, and available source URLs
pricing_benchmarksMedian first paid tier, free-tier prevalence, and paywall-capability distribution, computed from published pricing pages

Example client configuration

json
{  "mcpServers": {    "proofstack": {      "url": "https://proof-stack-lake.vercel.app/mcp"    }  }}

Works with any MCP client that supports remote Streamable HTTP servers (Claude Desktop / Claude Code, Cursor, etc.).

Source code

The server implementation is open (Apache-2.0) in src/: mcp.ts is the exact JSON-RPC/tool logic running at the endpoint above, and pricingBenchmark.ts is the benchmark computation. The data source contract is documented in database-contract.ts; the underlying dataset is open too (CC BY 4.0) at proofstack-dataset.

Data honesty rules

  • Revenue that is not publicly disclosed is returned as unknown — never estimated.
  • Acquisition narratives are researched from first-party sources; cases that have not been researched yet say so explicitly instead of returning template text.
  • Cases include available source URLs with evidence grades (A/B/C). Check each case’s research status and sources before relying on its claims.

Open dataset: the full case library and benchmarks are downloadable at proofstack-dataset (CC BY 4.0).

More machine-readable context: llms.txt · Pricing benchmarks · Case library

Free tool: AI-visibility check

Can GPTBot and ClaudeBot actually read your site? Run the free check (robots rules, llms.txt, sitemap, server rendering, JSON-LD) and get a shareable scorecard + README badge: https://proof-stack-lake.vercel.app/ai-check

Local / evaluation adapter

Requires Node.js 22 or later. Run node stdio.mjs to expose the same public tools over newline-delimited JSON-RPC stdio. This adapter forwards tool requests to the public endpoint above; it does not require a database credential, read local files, or host a separate dataset. Only JSON-RPC responses go to stdout. An endpoint outage returns a protocol error instead of invented data. The adapter supports this endpoint's JSON responses; it is not a general-purpose SSE proxy.

For Glama: build steps [], CMD arguments ["node", "stdio.mjs"], Node.js 24, no environment variables. Publishing an evaluation release does not require paid hosting.

Source: README.md at commit 76bd77d

Tools

3

search_cases

Search ProofStack's audited business-model case studies of small software products. Every case carries revenue and pricing claims linked to public sources with an evidence grade, plus an explicit list of what does NOT transfer to other builders.

Parametersqueryrequiredcategory

get_case

Fetch one audited case by slug: pricing tiers as published, the paid trigger, what to copy, what NOT to copy, and every evidence source with its URL and grade.

Parametersslugrequired

pricing_benchmarks

Pricing statistics counted from the published pricing pages of audited cases: median first paid tier, free-tier prevalence, and which capabilities most often sit behind the paywall. Products without a public price are excluded rather than estimated; no ranking or traffic figures exist here because those cannot be verified freely.

Parameterscategory

Version history

1
  1. v1.0.0LatestSep 16, 2026

Score

100% of the applicable checks met

How complete this listing is, computed from the registry entry, the endpoint and public sources. Not a rating of the server and not a statement that it is safe or working today: reachability is a dated check, and no installs or reviews go into the score.

  • Reached in the last 30 daysRequired25 pts
  • Auth declaredRequired10 pts
  • Tools listedRequired15 pts
  • DescriptionRequired15 pts
  • Logo10 pts
  • Documentation15 pts
  • License10 pts