io.github.vantioai/vantio-optics

Vantio Optics

Is the Vantio Optics MCP server down? No. It answered initialize and tools/list in the probe of 2026-10-31.

Vantio Optics — read-only Sight Loop observe for agents. Proofs, hosts, upgrade path.

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

6tools

976tokens in Claude Opus 5.5

0.5 %of Claude's 200k window

0.4×the median server

375 msto initialize

11 msto list tools

Run it: npx -y @vantio/optics-mcp@0.1.2 (stdio, probed in a container with the network off)
Host: npmjs.com
Reports itself as: vantio-optics 0.1.0
Capabilities: tools
Instructions: none
Of a 1M window: <0.1 % of a 1M context window
Count: 976 tokens in Claude Opus 5.5, exact, measured 2026-10-17. With the Claude Code prefix mcp__…__ on each tool name: 1.0k. The o200k_base estimate is 545. Counted again when the tool definitions change. Method.
Repository: https://github.com/vantioai/vantio-open-core
Website: https://vantio.ai/optics
Registry: active, updated 2026-08-23 · registry entry

Most expensive tools

The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.79×.

Tool	≈ Claude tokens	o200k estimate	Share of this server
optics_list_runs	177	99	18 %
optics_explain	176	98	18 %
optics_discover_local	168	94	17 %
optics_get_run	165	92	17 %
optics_prove	158	88	16 %

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

Servers that mention optics.

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.