io.github.alexar76/argus3

ARGUS-3 MCP Server

Is the ARGUS-3 MCP server down? No. It answered initialize and tools/list in the probe of 2026-11-12.

ARGUS-3 stdio MCP with WARDEN firewall: argus_ask, argus_status, argus_capabilities.

alive probed 2026-11-14 · unchanged since 2026-11-12

3tools

1.7ktokens in Claude Opus 5.5

0.8 %of Claude's 200k window

0.7×the median server

1.2 sto initialize

7 msto list tools

Run it: npx -y @alexar76/argus3@0.3.6 (stdio, probed in a container with the network off)
Host: npmjs.com
Reports itself as: argus 0.3.6
Capabilities: tools
Instructions: 444 characters
Of a 1M window: 0.2 % of a 1M context window
Count: 1.7k tokens in Claude Opus 5.5, exact, measured 2026-10-29. With the Claude Code prefix mcp__…__ on each tool name: 1.7k. The o200k_base estimate is 1.0k. Counted again when the tool definitions change. Method.
Repository: https://github.com/alexar76/argus
Registry: active, updated 2026-11-11 · registry entry
Changes: 2 recorded, reachable in 1 of them. A row is added when the result, the tool count or the cost changes.

Most expensive tools

The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.63×.

Tool	≈ Claude tokens	o200k estimate	Share of this server
argus_ask	997	612	59 %
argus_status	367	225	22 %
argus_capabilities	332	204	20 %

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

Servers that mention argus.

We add a row when the result changes. A server with no change keeps its last row.

Probed	Result	Init	Tools	Claude	o200k
2026-10-29 07:43	alive	1.2 s	3	1.7k	1.0k
2026-10-20 06:40	crashed on start

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.