Filesystem
Local file access for MCP clients. Read, write, list, search, move — with a real directory allowlist enforced at the boundary.
Filesystem is the one I run first on every new client. Read, write, list, move, search — local files exposed cleanly to the agent with the directory whitelist actually enforced at the boundary, not buried in a system prompt. Boring on purpose, and that's why it ships in production. If your agent touches files, this is the floor.
Seal evidence
Official reference server from the Model Context Protocol team. Code reviewed in-tree by Anthropic + MCP working group. Tier 1 by editorial decision.
L1-washL2-editorial
Pinned to main
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