mcpcost

io.github.tsarlewey/proof-cli

Proof CLI (unofficial)

Is the Proof CLI (unofficial) MCP server down? No. It answered initialize and tools/list in the probe of 2026-11-08.

Notarize, e-sign, and verify identity with the Proof API. Unofficial; not affiliated with Proof.

alive probed 2026-11-14 · unchanged since 2026-11-08

62tools
16ktokens in Claude Opus 5.5
8.1 %of Claude's 200k window
6.4×the median server
272 msto initialize
4 msto list tools
Run it
docker run -i --rm ghcr.io/tsarlewey/proof-cli:0.4.1 (stdio, probed in a container with the network off)
Host
ghcr.io
Reports itself as
proof 0.4.1
Capabilities
logging, tools
Instructions
none
Of a 1M window
1.6 % of a 1M context window
Count
16k tokens in Claude Opus 5.5, exact, measured 2026-10-26. With the Claude Code prefix mcp__…__ on each tool name: 17k. The o200k_base estimate is 8.8k. Counted again when the tool definitions change. Method.
Repository
https://github.com/tsarlewey/proof-cli
Registry
active, updated 2026-11-07 · registry entry

Most expensive tools

The Claude column scales the o200k estimate of each tool by this server's ratio of exact to estimate, 1.85×.

Tool≈ Claude tokenso200k estimateShare of this server
business_transactions_update1 58485710 %
business_transactions_patch1 58085510 %
business_transactions_create1 4958099 %
business_documents_add7063824 %
credentials_authorize_url5512983 %

Compare this server with others.

More servers

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

Servers that mention proof.

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