MCP server for exact arithmetic: one safe calculator tool over an AST allowlist, with no unbounded dependencies.
Latest release v0.1.9 · 17 Sept 2026
2 files for Codex, OpenCode and Claude Code: calc-mcp-server AGENTS.md, calc-mcp-server CLAUDE.md — 1,678 tokens loaded in every session.
AGENTS.md A 1,658 tok CLAUDE.md A 20 tok These files are slettmayer/calc-mcp-server's own configuration — they tell Codex, OpenCode and Claude Code how to work on this repository, so they are not mods to install elsewhere. Copy one as a starting point and replace the parts that are about this project.