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Kremis

A knowledge graph that records, associates and retrieves — and never invents.

by TyKolt ↗NoSQL, Graph & Key-Value StoresCommunity

LABSCO SUMMARY

Absence is an answer here, and it comes with a proof.

Ask about something never ingested and you get an explicit not-found — and the certify tool will hand you a certificate of that absence, re-derivable offline against the graph's BLAKE3 state hash. Same input, same output: no randomness and no floating-point arithmetic in the core, with ACID persistence underneath.

What it is

A deterministic graph engine written in Rust, with an MCP bridge. It starts empty, every node comes from a signal you ingested, and a missing fact returns an explicit not-found rather than a plausible guess.

What you get

  • kremis_ingest — record an entity, attribute and value, or a relationship between two entities
  • kremis_lookup and kremis_properties — a node by id, and all of its properties
  • kremis_traverse — walk out from a node to a depth (default 2, maximum 100), optionally keeping only the top_k highest-weight edges
  • kremis_path for the strongest path between two nodes, and kremis_intersect for the nodes connected to all of several inputs
  • kremis_retract — decrement an edge's weight, floored at 0
  • kremis_status for node count, edge count and density; kremis_hash for the canonical BLAKE3 hash of the whole graph state
  • kremis_certify — a Verifiable Query Certificate carrying the verdict, the canonical state hash, and a base64 proof a third party re-derives offline, including proof that something is absent

Requirements

Rust 1.89+ and Cargo. A release build produces kremis — the CLI and HTTP server — and kremis-mcp, the MCP server; the Docker image runs the MCP server by default. KREMIS_URL points the bridge at the HTTP server, defaulting to http://localhost:8080. KREMIS_API_KEY enables bearer authentication and KREMIS_RATE_LIMIT defaults to 100. Marked alpha: breaking changes are possible before v1.0.

Setup effort

Run a container — build the image from the repository, then point your client at it