mcpcost

org.vivesca/vivesca

vivesca

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

Opinionated MCP server — Pydantic output schemas, 7 domains, built to evolve.

alive probed 2026-11-14

24tools
2.7ktokens in Claude Opus 5.5
1.3 %of Claude's 200k window
1.1×the median server
7.6 sto initialize
418 msto list tools
Run it
uvx vivesca@0.2.3 (stdio, probed in a container with the network off)
Host
pypi.org
Reports itself as
vivesca 4.2.0
Capabilities
logging, prompts, resources, tools
Instructions
210 characters
Of a 1M window
0.3 % of a 1M context window
Count
2.7k tokens in Claude Opus 5.5, exact, measured 2026-10-17. With the Claude Code prefix mcp__…__ on each tool name: 2.9k. The o200k_base estimate is 1.4k. Counted again when the tool definitions change. Method.
Repository
https://github.com/vivesca/vivesca
Registry
active, updated 2026-03-21 · registry entry

Most expensive tools

The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.93×.

Tool≈ Claude tokenso200k estimateShare of this server
fasti_create_event2431269 %
oghma_search176917 %
fasti_move_event139725 %
navigator_screenshot137715 %
vigilis_log_symptom131685 %

Compare this server with others, or with the servers that share its tool set.

Same tool set as 1 other server

These registry entries have the same tool names and the same schema sizes.

More servers

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

Servers that mention vivesca or opinionated or pydantic.

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mcpcost: alive

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

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A mail when this server changes

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

For the publisher