Kronroe — Temporal Graph Playground

Bi-temporal graph.
In your browser.

Track not just what's true — but when it became true, and when you recorded it. Query any point in time.

// Pure Rust → WebAssembly. No server. No network. No schema.

pip install kronroe or cargo add kronroe

What does bi-temporal mean?

Every fact in Kronroe carries four timestamps — not just "created_at"

Normal database

alice.employer = "Acme"

You know what's true now. You don't know what was true last month. If it changes, the old value is gone.

Kronroe

alice works_at Acme
valid: 2023-06 → 2024-01
recorded: 2024-03-14

You know what's true, when it was true, and when you learned it. Nothing is ever deleted — history is preserved.

Why Kronroe?

The only embedded, mobile-ready temporal graph engine

	Kronroe	Graphiti / Zep	mcp-memory-service
Requires server	No — single file	Yes — Neo4j	No
Temporal model	Bi-temporal	Bi-temporal (via Neo4j)	None
Mobile / edge	iOS, Android, WASM	No	No
LLM required	No	Yes	No
Contradiction detection	Engine-native	LLM-based	No
Confidence / uncertainty	Engine-native	No	No
Full-text search	BM25 + fuzzy	Via Neo4j	No
Vector search	Cosine + temporal	Via Neo4j	No

Built for

◈

AI agent memory

Give your agents persistent memory that tracks how knowledge evolves. No server, no LLM calls for storage — just assert facts and query any point in time.

◈

Mobile and edge apps

Full relationship graph on iOS and Android with zero network latency. Compiles to a native library under 6 MB. Privacy-first — data never leaves the device.

◈

MCP tool memory

Drop-in memory for Claude Desktop, Cursor, and any MCP client. Eight tools out of the box — remember, recall, assert, correct, invalidate, and more.

QUICK START

1) Click a TRY chip. 2) Press Assert. 3) Enter that subject in Find and press Find.

Shortcuts: Ctrl/Cmd+K focus Find · Ctrl/Cmd+Enter submit panel

Assert fact

valid from

TRY

Find entity

at time

Fact stream 0 facts

ALL

TEMPORAL RAIL

No temporal points yet. 0 visible

TIME DIFF A/B

Pick two points in time to compare state changes.

◈ No facts yet.
Click a TRY chip or run the Time-travel demo to begin.

e.g. alice · works_at → @Acme 12:34:05

ENTITY STORIES

Entity story cards appear here after facts are loaded.

Bi-temporal graph.In your browser.