mcpcost

io.github.eyal-gor/cerver

Cerver

Is the Cerver MCP server down? No. It answered initialize and tools/list in the probe of 2026-11-13.

Computers for your agents: sandboxes, desktops and your own machines, on your own keys.

alive probed 2026-11-14 · unchanged since 2026-11-13

13tools
2.1ktokens in Claude Opus 5.5
1.0 %of Claude's 200k window
0.8×the median server
34 msto initialize
2 msto list tools
Run it
npx -y @cerver/mcp@0.2.0 (stdio, probed in a container with the network off)
Host
npmjs.com
Reports itself as
cerver 0.2.0
Capabilities
tools
Instructions
185 characters
Of a 1M window
0.2 % of a 1M context window
Count
2.1k tokens in Claude Opus 5.5, exact, measured 2026-11-13. With the Claude Code prefix mcp__…__ on each tool name: 2.2k. The o200k_base estimate is 1.2k. Counted again when the tool definitions change. Method.
Website
https://cerver.ai/quickstart
Registry
active, updated 2026-11-13 · registry entry
Changes
3 recorded, reachable in 3 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, 1.67×.

Tool≈ Claude tokenso200k estimateShare of this server
start_computer35621317 %
connect_provider28717214 %
move_session25415212 %
find_computer21112610 %
stop_session1741048 %

Compare this server with others.

More servers

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

Servers that mention computers or sandboxes.

History

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

ProbedResultInitToolsClaudeo200k
2026-11-13 08:49alive92 ms132.1k1.2k
2026-11-11 08:27alive34 ms3424246
2026-11-05 08:36alive98 ms3424246

Badge for the README

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.

Atom feed

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