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CLAUDE PLUGIN

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 ...

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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.

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

Claude Code installation documentation

Technical details
Sources
Community
First seen
Oct 3, 2026 · 22:13 UTC
Last seen
Nov 7, 2026 · 12:00 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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