mcpcost

io.github.vikasny30/aletheia-mcp

Aletheia Runtime Safety & Scope Creep Filter

Is the Aletheia Runtime Safety & Scope Creep Filter MCP server down? No. It answered initialize and tools/list in the probe of 2026-10-30.

Deterministic pre-execution filter that blocks known scope-creep and prompt-injection tool calls

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

6tools
1.6ktokens in Claude Opus 5.5
0.8 %of Claude's 200k window
0.6×the median server
324 msto initialize
28 msto list tools
Run it
npx -y aletheia-mcp@0.3.1 (stdio, probed in a container with the network off)
Host
npmjs.com
Reports itself as
aletheia-mcp 0.3.1
Capabilities
prompts, resources, tools
Instructions
none
Of a 1M window
0.2 % of a 1M context window
Count
1.6k tokens in Claude Opus 5.5, exact, measured 2026-10-16. With the Claude Code prefix mcp__…__ on each tool name: 1.7k. The o200k_base estimate is 858. Counted again when the tool definitions change. Method.
Repository
https://github.com/vikasny30/aletheia-mcp
Website
https://github.com/vikasny30/aletheia-mcp
Registry
active, updated 2026-09-13 · 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
aletheia_set_mandate65234640 %
aletheia_intercept28515118 %
aletheia_safe_bash24513015 %
aletheia_safe_sql20210712 %
aletheia_get_telemetry1608510 %

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