This server gives your agent cryptographic handles for cognitive patterns. When two agents reference StateLock#5602, they're pointing to identical definitions down to the byte. Search 427 patterns across reasoning, coordination, and substrate layers, then call sema_handshake to verify alignment before proceeding. If the hashes match, you get PROCEED. If they drift, you HALT. Also exposes sema_mint for adding patterns, sema_resolve for dependency graphs, and sema_propose_context for multi-agent definition sets. Comes with a CLI and optional web frontend. Useful when you need agents to agree on what a word means before they use it, not after things break.
claude mcp add --transport stdio io.github.emergent-wisdom-semahash uvx semahash