io.github.codespar/mcp-nupay

mcp-nupay

Is the io.github.codespar/mcp-nupay MCP server down? No. It answered initialize and tools/list in the probe of 2026-10-31.

MCP server for NuPay — Nubank merchant checkout: Pix + wallet one-click for 100M+ BR users

alive probed 2026-11-14 · unchanged since 2026-10-31

22tools

5.2ktokens in Claude Opus 5.5

2.6 %of Claude's 200k window

2.1×the median server

322 msto initialize

10 msto list tools

Run it: npx -y @codespar/mcp-nupay@0.2.2 (stdio, probed in a container with the network off)
Host: npmjs.com
Reports itself as: mcp-nupay 0.2.1
Capabilities: tools
Instructions: 281 characters
Of a 1M window: 0.5 % of a 1M context window
Count: 5.2k tokens in Claude Opus 5.5, exact, measured 2026-10-17. With the Claude Code prefix mcp__…__ on each tool name: 5.4k. The o200k_base estimate is 2.7k. Counted again when the tool definitions change. Method.
Repository: https://github.com/codespar/mcp-dev-latam
Registry: active, updated 2026-06-22 · registry entry

Most expensive tools

The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.88×.

Tool	≈ Claude tokens	o200k estimate	Share of this server
create_payment	1 090	579	21 %
exchange_token	493	262	10 %
create_recipient	343	182	7 %
revoke_token	309	164	6 %
list_payments_by_date	281	149	5 %

Other registry entries on npmjs.com, the ones next to this name; all of them.

Servers that mention checkout or merchant.

The result of the latest probe, the tool count and the token cost. The feed has an entry for every probe that changed them.

Stops answering, comes back, tool set or cost changes. One confirmation mail first, a stop link in every mail.