← The evidence ledger
Evidence row 38936
Observed , by baseline/1.
- Kind
- listing
- About
- source_record mcp_registry:io.github.islobodan/cruncher-mcp
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 80e80c9cff0f9df0d9af3afbf093e59c4ce416371b486058a71857ab7138db04
- Leaf
- 0x3d36fc614071982cfad2390a9bb765a65231ebed3582d4a13b90861437621c95
What was observed
{
"endpoints": [
[
"web",
"https://github.com/islobodan/cruncher-mcp"
]
],
"name": "Cruncher",
"owner_address": null,
"raw": {
"_meta": {
"io.modelcontextprotocol.registry/official": {
"isLatest": true,
"publishedAt": "2026-05-08T09:33:02.932233Z",
"status": "active",
"statusChangedAt": "2026-05-08T09:33:02.932233Z",
"updatedAt": "2026-05-08T09:33:02.932233Z"
}
},
"server": {
"$schema": "https://static.modelcontextprotocol.io/schemas/2025-12-11/server.schema.json",
"_meta": {
"io.modelcontextprotocol.registry/publisher-provided": {
"category": "calculator",
"features": [
"43 tools across 8 categories",
"zero-dependency pure Node.js",
"worker thread isolation with timeout protection",
"strict JSON-Schema validation",
"MCP spec 2025-11-25 compliant",
"tool annotations for safety metadata",
"fuzzy tool name matching",
"LRU result caching"
],
"tiers": {
"full": 43,
"minimal": 5,
"standard": 34
},
"tool": "manual",
"toolCount": 43
}
},
"description": "Scientific calculator MCP server with 43 tools: arithmetic, trig, stats, unit conversion.",
"name": "io.github.islobodan/cruncher-mcp",
"packages": [
{
"environmentVariables": [
{
"description": "Tool exposure tier: 'minimal' (5 tools), 'standard' (34 tools, default), or 'full' (43 tools)",
"name": "CRUNCHER_TOOL_SET"
},
{
"description": "Worker thread timeout in milliseconds for heavy calculations (default: 3000, range: 100-60000)",
"name": "CRUNCHER_TIMEOUT"
}
],
"identifier": "@slbdn/cruncher-mcp",
"registryBaseUrl": "https://registry.npmjs.org",
"registryType": "npm",
"transport": {
"type": "stdio"
},
"version": "1.2.29"
}
],
"repository": {
"source": "github",
"url": "https://github.com/islobodan/cruncher-mcp"
},
"title": "Cruncher",
"version": "1.2.29",
"websiteUrl": "https://github.com/islobodan/cruncher-mcp#readme"
}
},
"source": "mcp_registry",
"summary": "Scientific calculator MCP server with 43 tools: arithmetic, trig, stats, unit conversion."
}What the leaf hashes
{"body":"80e80c9cff0f9df0d9af3afbf093e59c4ce416371b486058a71857ab7138db04","id":38936,"kind":"listing","method":"baseline/1","observed_us":1793025394299567,"prev":null,"subject":"mcp_registry:io.github.islobodan/cruncher-mcp","subject_kind":"source_record"}Proof
Its day has not closed yet. A day closes ten minutes after midnight UTC; the proof appears here then.