mcpcost

io.github.theluckystrike/tax-calc

mcp-tax-calc

Is the io.github.theluckystrike/tax-calc MCP server down? No. It answered initialize and tools/list in the probe of 2026-10-30.

US federal income tax estimates: brackets, marginal rate, effective rate. Planning values.

alive probed 2026-11-15 · unchanged since 2026-10-30

1tools
136tokens in Claude Opus 5.5
<0.1 %of Claude's 200k window
0.1×the median server
123 msto initialize
3 msto list tools
Bundle
https://github.com/theluckystrike/mcp-servers/releases/download/v0.22.0/tax-calc.mcpb (MCPB, for a client that installs bundles; probed in a container with the network off)
Host
github.com
Reports itself as
mcp-tax-calc 1.0.0
Capabilities
tools
Instructions
none
Of a 1M window
<0.1 % of a 1M context window
Count
136 tokens in Claude Opus 5.5, exact, measured 2026-10-30. With the Claude Code prefix mcp__…__ on each tool name: 146. The o200k_base estimate is 72. Counted again when the tool definitions change. Method.
Repository
https://github.com/theluckystrike/mcp-servers
Registry
active, updated 2026-10-09 · 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 tokenso200k estimateShare of this server
us_federal_tax13672100 %

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