io.github.artnames/nexart-mcp-server

NexArt MCP Server

Is the NexArt MCP server down? No. It answered initialize and tools/list in the probe of 2026-11-14.

Verify NexArt evidence and opt in to confidential AI recording and authorised Node certification.

alive probed 2026-11-15 · unchanged since 2026-11-14

7tools

1.3ktokens in Claude Opus 5.5

0.7 %of Claude's 200k window

0.5×the median server

181 msto initialize

9 msto list tools

Run it: npx -y @nexart/mcp-server@0.1.0 (stdio, probed in a container with the network off)
Host: npmjs.com
Reports itself as: nexart-mcp-server 0.1.0
Capabilities: tools
Instructions: none
Of a 1M window: 0.1 % of a 1M context window
Count: 1.3k tokens in Claude Opus 5.5, exact, measured 2026-11-14. With the Claude Code prefix mcp__…__ on each tool name: 1.4k. The o200k_base estimate is 701. Counted again when the tool definitions change. Method.
Repository: https://github.com/artnames/nexart-mcp-server
Registry: active, updated 2026-11-13 · registry entry

Most expensive tools

The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.89×.

Tool	≈ Claude tokens	o200k estimate	Share of this server
nexart_verify_node_receipt	271	143	20 %
nexart_lookup_cer	186	98	14 %
nexart_lookup_project_bundle	186	98	14 %
nexart_verify_governed_execution	180	95	14 %
nexart_verify_ai_cer	178	94	13 %

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

Servers that mention certification or confidential.

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.