{"slug":"sema","title":"sema","description":"Sema adds a content-addressed vocabulary of 452 cognitive patterns to Claude. Each pattern has a handle like StateLock#5602 — a SHA-256 hash of its definition — so two agents using the same handle are provably talking about the same thing. Any divergence in meaning produces a different hash, making silent misalignment impossible.\n\nKey features:\n\n- sema_search — semantic + keyword search across the pattern library\n• sema_resolve — full definition, mechanism, invariants, and dependency graph for any handle\n• sema_handshake — verify two agents share the exact same definition; halt on mismatch\n• sema_tree — browse the taxonomy (Physics / Mind / Society / Infrastructure)\n• sema_root — one-hash fingerprint of the whole vocabulary, for fast drift checks\n• sema_mint — add project-local patterns (survives pip upgrades)\n• sema pull — sync a project DB with upstream, auto-redirecting renamed handles","developer":null,"category":null,"reported_installs":null,"active":true,"first_seen_at":"2026-10-03T22:13:33.942Z","last_seen_at":"2026-11-07T00:08:29.147Z","last_changed_at":"2026-10-03T22:13:33.942Z","platform":"claude","sources":["Community"],"works_with":["Claude Code"],"marketplace_url":null,"repository_url":"https://github.com/emergent-wisdom/sema.git","web_data":{},"github_data":{},"catalog_sources":{"community":[{"name":"sema","source":{"sha":"495e4655b2b404fe8ec0329b193f0c36e2ea7b8a","url":"https://github.com/emergent-wisdom/sema.git","source":"url"},"homepage":"https://semahash.org/","description":"Sema adds a content-addressed vocabulary of 452 cognitive patterns to Claude. Each pattern has a handle like StateLock#5602 — a SHA-256 hash of its definition — so two agents using the same handle are provably talking about the same thing. Any divergence in meaning produces a different hash, making silent misalignment impossible.\n\nKey features:\n\n- sema_search — semantic + keyword search across the pattern library\n• sema_resolve — full definition, mechanism, invariants, and dependency graph for any handle\n• sema_handshake — verify two agents share the exact same definition; halt on mismatch\n• sema_tree — browse the taxonomy (Physics / Mind / Society / Infrastructure)\n• sema_root — one-hash fingerprint of the whole vocabulary, for fast drift checks\n• sema_mint — add project-local patterns (survives pip upgrades)\n• sema pull — sync a project DB with upstream, auto-redirecting renamed handles"}]},"manifest":{"url":"https://raw.githubusercontent.com/emergent-wisdom/sema/495e4655b2b404fe8ec0329b193f0c36e2ea7b8a/.claude-plugin/plugin.json","payload":{"name":"sema","hooks":"./hooks/hooks.json","skills":"./skills/","version":"0.4.0","mcpServers":{"sema":{"args":["--from","semahash[mcp]","sema","mcp"],"command":"uvx"}},"description":"Content-addressed vocabulary protocol — shared meaning for AI agents"},"observed_at":"2026-11-06T10:48:52Z"}}