sema
Developer not provided v0.4.0
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 ...
From the developer
Declared components
Skills · Hooks · Mcp servers
Works with
Claude Code
Description
From the marketplace listing
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. Key features: - sema_search — semantic + keyword search across the pattern library • sema_resolve — full definition, mechanism, invariants, and dependency graph for any handle • sema_handshake — verify two agents share the exact same definition; halt on mismatch • sema_tree — browse the taxonomy (Physics / Mind / Society / Infrastructure) • sema_root — one-hash fingerprint of the whole vocabulary, for fast drift checks • sema_mint — add project-local patterns (survives pip upgrades) • sema pull — sync a project DB with upstream, auto-redirecting renamed handles
What changed
No changes recorded yet. Follow this plugin to keep track of future changes.
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Files & skills
sema · catalog manifest
Saved declaration
{}
sema · catalog manifest
Saved declaration
{
"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"
}
sema · catalog manifest
Skills
"./skills/"
Hooks
"./hooks/hooks.json"
Mcp servers
{
"sema": {
"args": [
"--from",
"semahash[mcp]",
"sema",
"mcp"
],
"command": "uvx"
}
}
Saved declaration
{
"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"
}
plugin.json observed Nov 6, 2026 · 10:48 UTC. Manifest source ↗
Catalog declarations and available plugin.json metadata are saved. Referenced skills and executable source files are not downloaded or tested. Missing components in a manifest do not prove that the plugin has none.
Installation instructions
Community
/plugin marketplace add anthropics/claude-plugins-community
/plugin install sema@claude-community
Technical details
- Sources
- Community
- First seen
- Oct 3, 2026 · 22:13 UTC
- Last seen
- Nov 7, 2026 · 00:08 UTC
- Latest observed change
- Oct 3, 2026 · 22:13 UTC
- Collection status
- Listed
- Reported installs
- Not provided
Installation counts are source-reported, not independently verified active users. Observation dates are not release dates.
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