io.github.codespar/mcp-z-api

mcp-z-api

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

MCP server for Z-API — WhatsApp messaging, contacts, media

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

27tools

3.7ktokens in Claude Opus 5.5

1.8 %of Claude's 200k window

1.5×the median server

328 msto initialize

8 msto list tools

Run it: npx -y @codespar/mcp-z-api@0.2.2 (stdio, probed in a container with the network off)
Host: npmjs.com
Reports itself as: mcp-z-api 0.2.1
Capabilities: tools
Instructions: 281 characters
Of a 1M window: 0.4 % of a 1M context window
Count: 3.7k tokens in Claude Opus 5.5, exact, measured 2026-10-17. With the Claude Code prefix mcp__…__ on each tool name: 4.0k. The o200k_base estimate is 2.0k. 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, 1.86×.

Tool	≈ Claude tokens	o200k estimate	Share of this server
send_option_list	406	219	11 %
send_button_actions	282	152	8 %
add_contacts	221	119	6 %
send_location	176	95	5 %
delete_message	160	86	4 %

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

Servers that mention codespar.

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.