Proofstack MCP Server

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

answering

Proofstack is answering right now. Last checked 6 min ago. It exposes 3 tools. Last commit 10 Oct 2026.

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

Uptime history 60 days of history · worst day 22%

60 days agonow

76.9%

Uptime 24h

70 of 91 checks

Tools

read from the server

278 ms

Response time

average over 24h

Stars

last commit 10 Oct 2026

Proofstack does not always answer

Over the last week it answered 59.8% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 6 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add proofstack --transport http https://proof-stack-lake.vercel.app/mcp

Settings → Connectors → Add custom connector, then paste this address

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

{
  "servers": {
    "proofstack": {
      "type": "http",
      "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

URL	Transport	State	Latency	Checked
https://proof-stack-lake.vercel.app/mcp	streamable-http	answering	216 ms	6 min ago

Alternatives to Proofstack

same job, measured the same way

Business Site Audit

by mthburnsbarber-web

Audit a business website for observed crawl and indexing issues with source-linked fixes.

1 tools answering

AI Pricing Hub

by gishh

Source-backed AI model pricing, rankings, history, and benchmark data.

11 tools answering

Agentrank MCP

by saviodamato

Find real, verifiable businesses with provenance and source URLs - for AI agents.

132 installs/wk local only

PromptingCraft Guidance

by promptingcraft

Source-backed prompting and coding-agent guidance with provenance and freshness checks.

3 tools answering

Trades With AI + SaaS Price Watch

by tradeswithai

Read-only data: AI tools for trades businesses and public SaaS pricing, with source quotes.

6 tools answering

InvoiceVista Invoice Maker

by invoicevista

See revenue, unpaid invoices, open quotes and your product catalog for each of your businesses.

9 tools answering

LLM Advisor

by daichi-kudo

Real-time LLM/VLM benchmarks, pricing, and recommendations. 300+ models, 5 sources.

98 installs/wk local only

AI Benchmark Index

by aibenchmarkindex

Search 264 AI benchmarks by category, with data sources and licences for each.

9 tools answering

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 70 of 91 checks got a reply (76.9%), average response time 278 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 in the form 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 278 ms on average, which is faster than 51% 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?

The code is open source: it is published under the Apache-2.0 licence, written in TypeScript and 0 stars on GitHub. The licence covers the code in the repository, not the hosted service at proof-stack-lake.vercel.app, which runs on its operator's own terms.