Sema is an open-source library of content-addressed cognitive patterns, offering an interactive browser, HTTP API, and MCP server. It enables autonomous agents and developers to share and coordinate semantics using cryptographic identifiers. Designed for AI and semantic web applications.
In the Other AI space, Sema takes a focused approach. It focuses on providing a standardized, content-addressed vocabulary of cognitive patterns for autonomous agents and semantic coordination. It is built as an open-source project for AI researchers and developers. Sema is open source under the MIT license. Sema is available on the web, the command line, and API.
Behind Sema is Sema Project, and the product first shipped in 2026. Development happens publicly on GitHub with 206 commits in the last 90 days. PulseGate's similarity index finds few close equivalents — Sema occupies a relatively distinct niche. Key capabilities include pattern browser, HTTP API, and MCP server. It exposes integrations via an MCP server and a public API.
Latest indexed changes and source events
semahash.org discovered by the PulseGate indexer
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