Show HN: Stigmem – open-source federated knowledge fabric for AI agents (v1.0)

Category: ai-ml

Tags: federated, ai-agents, knowledge-graph, distributed-systems, mcp

Score: 6.3/10 (Innovation: 7, Technical: 7, Documentation: 7, Utility: 5)

Stigmem is an open-source federated knowledge substrate for AI agents, enabling agents to share typed, provenance-tagged facts across nodes via signed peer handshakes. It uses immutable facts with hybrid logical clocks and first-class conflict records, and includes an MCP adapter for easy integration. The project is spec-complete with a reference implementation and automated failure-mode tests.

Target audience: AI engineers, backend developers, distributed systems researchers

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