Sema

When the hash is the word.

A content-addressed commons of ~450 cognitive patterns where the definition is the identifier. Two agents that share a hash cannot silently disagree on what the word means: any divergence produces a distinct hash, so misaligned agents halt instead of drifting.

llms.txt · sitemap.xml · GitHub · PyPI · Paper (PDF)

Public HTTP API

Read-only, JSON, CORS-open, no auth. AI agents can fetch these directly.

/api/graph — full pattern graph as a single JSON.
/api/patterns — list of all patterns.
/api/patterns/{handle} — single pattern by handle or hash.
/api/search?q=... — full-text search.
/.well-known/mcp/server.json — MCP registry descriptor.

Using Sema with AI agents (MCP)

claude mcp add sema -- uvx --from semahash sema mcp

Then your agent can call sema_search, sema_resolve, sema_handshake, and sema_mint during reasoning.

Pages

Public HTTP API

Using Sema with AI agents (MCP)