Add SageMath MCP (sagemath-mcp)

[csteinlxbp]

Adds registry/mcps/sagemath-mcp/ with entry.json and a 512 px icon.png. npm run validate passes (204 entries).

sagemath-mcp is an MIT-licensed MCP server that gives agents a sandboxed SageMath session: 40 tools for exact and symbolic mathematics, with state that persists between calls and a verify_claim tool that re-checks stated results.

• Install: local stdio through uvx --from "sagemath-mcp[passagemath]" sagemath-mcp. The [passagemath] extra brings the Sage runtime, about 1 GB on the first launch. Works on macOS and Linux.
• Maintained: current release 0.9.4 (2026-10-10). It is on PyPI, conda-forge, GHCR (signed images with SLSA provenance and an SBOM) and the official MCP Registry.
• Safe to install: caller code is deny-by-default. An AST validator and a namespace scrub refuse imports, file, network and shell access, and external interfaces. See SECURITY.md. The server sends nothing anywhere (PRIVACY.md, landing with Prepare the directory listings: registry fix, Claude plugin, privacy, icon XBP-Europe/sagemath-mcp#224).
• Tags: research and data. tags.json has no mathematics category, and I didn't want to add one in a single-entry PR.
• Not official: this is an independent project, not affiliated with the SageMath developers. The entry says so and is named sagemath-mcp rather than "SageMath".

🤖 Generated with Claude Code