BuyAPI MCP Server

by thesnakefang Your server? Claim it

not responding

BuyAPI is listed as active in the registry but did not answer our last check. 52 installs a week from npm. It exposes 7 tools. Last commit 23 Aug 2026.

Vendor intelligence for AI coding agents choosing developer tools and stacks.

Installs per day peak 28 · avg 10 · -6% w/w

a month agotoday

Uptime history 51 days of history · worst day 0%

51 days agonow

0.0%

Uptime 24h

0 of 91 checks

Tools

read from the server

200 ms

Response time

average over 24h

Installs / week

npm and PyPI

What the code does

We read the source, 17 h ago · tools taken from the live server · rules 3dff92dd89df

Capabilities

What this server is able to do. For an MCP server this is often the job itself — a terminal server runs commands because that is what it is for. Listed so you know what you are plugging in, not as an accusation.

Runs an external command src/lib/login.ts:77

  const child = spawn(command, args, { detached: true, stdio: "ignore" });

Is this your server and something here is wrong? Tell us — corrections are free and do not require a plan.

This code can reach further than it looks

We found places where it runs commands, builds paths or queries from values it is given. None of that is a flaw by itself — it becomes one when the code changes, and code changes quietly between releases. We re-read it on every one.

Connect this server

Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 7 min ago.

Claude Code Claude Desktop Codex Cursor VS Code

run in your terminal

claude mcp add buyapi-mcp --transport http https://buyapi.ai/api/mcp

~/Library/Application Support/Claude/claude_desktop_config.json

{
  "mcpServers": {
    "buyapi-mcp": {
      "url": "https://buyapi.ai/api/mcp"
    }
  }
}

~/.codex/config.toml

[mcp_servers.buyapi-mcp]
url = "https://buyapi.ai/api/mcp"

.cursor/mcp.json

{
  "mcpServers": {
    "buyapi-mcp": {
      "url": "https://buyapi.ai/api/mcp"
    }
  }
}

.vscode/mcp.json

{
  "mcpServers": {
    "buyapi-mcp": {
      "url": "https://buyapi.ai/api/mcp"
    }
  }
}

Available tools 7

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

vendors

vendors.compare

Compares two or more already-known BuyAPI vendors for a specific workload or decision. Use this when the candidate set is known, for head-to-head questions like "Convex vs Supabase vs Neon for a realtime SaaS" or "Stripe vs Paddle for a marketplace". If the user has not named candidates, use vendors.resolve first.

vendors.details

Follow-up tool for one known vendor. Retrieves detailed pricing, features, limits, gotchas, comparisons, and source provenance. Call vendors.resolve first unless the user already provided a BuyAPI vendor ID like /database/supabase. Use this after a candidate is selected and the user needs claim-level pricing, limit, gotcha, or provenance details.

vendors.estimateCost

Produces directional monthly cost estimates from BuyAPI pricing data and explicit workload inputs. Use this only when the user asks for cost math and provides explicit workload inputs. Missing workload fields are returned as assumptions or unknowns instead of being hallucinated. Treat results as BuyAPI claim-based estimate math; verify exact billing in first-party docs, vendor CLIs, or vendor MCPs before purchase or production decisions.

vendors.evidence

Returns recent reviewed BuyAPI evidence rows for a vendor, category, stack, or comparison. Use this when the user asks why BuyAPI believes something, what sources support a recommendation, or what recent human/source/opinion/history signals exist. This is a trust and provenance follow-up, not the first recommendation tool.

vendors.resolve

First stop for category-specific vendor recommendations and vendor ID discovery. Finds BuyAPI vendor IDs for a user question; provide category when known. Use this when the user asks which provider in a category fits their constraints. With a covered category, the response includes ranked results plus a top-3 decision matrix with fit labels, confidence, tradeoffs, cost notes, freshness, and sources. Do not use this for local coding/debugging/docs questions unless they involve choosing a software vendor or tool. If the category is outside BuyAPI's corpus, the tool returns an explicit "not in corpus yet" result instead of inventing vendors.

stacks

stacks.findSimilar

Finds reviewed public stack examples related to a vendor, or recent curated stack examples. Use this when the user asks who uses a tool, what similar builders use, or wants examples of real stack combinations. Do not use it as a generic recommendation tool.

stacks.recommend

Recommends a complete stack from BuyAPI's corpus with a structured decision matrix, cost estimate, assumptions, unknowns, alternatives, and sources. Use this when the user is starting a project or asks for a complete multi-layer stack choice. Do not use this for local coding/debugging/docs questions that do not involve software or vendor selection. Do not call vendors.resolve first; this tool handles retrieval and ranking.

Endpoints

URL	Transport	State	Latency	Checked
https://buyapi.ai/api/mcp	streamable-http	answering	200 ms	7 min ago

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BuyAPI — questions

Answers built from our own checks of this server.

What can BuyAPI do?

It exposes 7 tools, read directly from the server on our last check. Among them: stacks.findSimilar, stacks.recommend, vendors.compare, vendors.details, vendors.estimateCost, vendors.evidence and 1 more. 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 →

What is BuyAPI mostly used for?

Its tools cluster around vendors and stacks. That is what this server is built to work with — the grouping comes from the actual tool names, not from a category we assigned.

Is BuyAPI working right now?

We send a real MCP handshake every 15 minutes. Over the last 24 hours 0 of 91 checks got a reply (0.0%), average response time 200 ms. The bar chart above shows every period we have measured.

The registry lists BuyAPI as active — why does it not respond?

The official MCP registry stores what the author submitted; it does not verify that the server still runs. We check the endpoint ourselves, and this one does not answer. Catalogues that copy the registry without checking will show it as working.

How do I connect BuyAPI?

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 BuyAPI need an API key?

No. BuyAPI completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 7 of them are readable on this page. This is what we observed, not what the docs claim.

How many people use BuyAPI?

The npm package buyapi was installed 52 times in the last week. Week over week that is -6%. We show installs rather than GitHub stars on purpose: a star is a bookmark, an install is someone actually running it.

Is BuyAPI open source?

Yes — it is published under the MIT licence, written in TypeScript and 1 stars on GitHub. The source link is on this page, so you can read exactly what it does with your data before you connect it.