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Proofstack MCP Server

by vercel-proof-stack-lake Your server? Claim it
answering

Proofstack is answering right now. Last checked 9 min ago. It exposes 3 tools. Last commit 8 Sep 2026.

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

Uptime history 15 days of history · worst day 99%
15 days agonow
100.0%
Uptime 24h
91 of 91 checks
3
Tools
read from the server
301 ms
Response time
average over 24h
0
Stars
last commit 8 Sep 2026

Nothing serious here today

Today is the operative word: we check Proofstack every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.

Three servers free · no card

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 9 min ago.

run in your terminal
claude mcp add proofstack --transport http https://proof-stack-lake.vercel.app/mcp
~/Library/Application Support/Claude/claude_desktop_config.json
{
  "mcpServers": {
    "proofstack": {
      "url": "https://proof-stack-lake.vercel.app/mcp"
    }
  }
}
~/.codex/config.toml
[mcp_servers.proofstack]
url = "https://proof-stack-lake.vercel.app/mcp"
.cursor/mcp.json
{
  "mcpServers": {
    "proofstack": {
      "url": "https://proof-stack-lake.vercel.app/mcp"
    }
  }
}
.vscode/mcp.json
{
  "mcpServers": {
    "proofstack": {
      "url": "https://proof-stack-lake.vercel.app/mcp"
    }
  }
}

Available tools 3

Read directly from the server with tools/list, grouped by what they act on. If a tool disappears, we record the date.

case
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.
cases
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.
pricing
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.

Endpoints

URLTransportStateLatencyChecked
https://proof-stack-lake.vercel.app/mcp streamable-http answering 251 ms 9 min ago

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Proofstack — questions

Answers built from our own checks of this server.

What can Proofstack do?
It exposes 3 tools, read directly from the server on our last check. Among them: get_case, pricing_benchmarks, search_cases. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README. How MCP servers expose tools in the first place →
Is Proofstack working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 91 of 91 checks got a reply (100.0%), average response time 301 ms. The bar chart above shows every period we have measured.
How do I connect Proofstack?
Copy the ready config from this page — we generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each with the file path that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Proofstack need an API key?
No. Proofstack completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 3 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is Proofstack?
It answers our handshake in 301 ms on average, which is faster than 50% of all working MCP servers we measure. The comparison comes from our own checks across the whole registry, every 15 minutes.
Is Proofstack open source?
We cannot say either way: 0 stars on GitHub and 1 open issue, but we could not determine the licence, and without one the code is not open source by default.