{"name": "io.github.cyanheads/calculator-mcp-server", "found": true, "identity": {"name": "io.github.cyanheads/calculator-mcp-server", "verdict": "block", "because": "unreachable \u2014 do not depend on this", "health": "dead / unreachable", "nature": null, "nature_evidence": "reported", "verifiability": null, "verifiability_scope": "V n/a \u2014 the ladder applies to public-fact retrieval only", "auth": "n/a", "paid": false, "latency_ms": 106, "as_of": "2026-08-15", "page": "https://robinsaige.com/s/io.github.cyanheads/calculator-mcp-server"}, "alternatives": {"note": "similar by what they say they do \u2014 never verified drop-in replacements; check each one before depending on it", "servers": [{"server": "io.github.clouatre-labs/math-mcp-learning-server", "verdict": "allow", "description": "Educational MCP server with 17 math/stats tools, visualizations, and persistent workspace", "shared_terms": ["calculate", "evaluate", "expressions", "mathematical"]}, {"server": "engineer.calc/calc", "verdict": "allow", "description": "88 free engineering calculators: RF link budgets, LoRa/Meshtastic, PCB, solar, homelab. Keyless.", "shared_terms": ["calculate", "differentiate", "expressions", "simplify"]}, {"server": "io.github.pipeworx-io/mathjs", "verdict": "allow", "description": "Math.js MCP \u2014 wraps the mathjs.org API (free, no auth)", "shared_terms": ["evaluate", "expressions", "mathematical", "simplify"]}, {"server": "io.github.ColinHughes2121/gocreative-agent-api", "verdict": "allow", "description": "17-model LLM gateway + 350+ data/KYB/sanctions tools. 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