# Odin

> Open-source Python library for guided knowledge-graph retrieval. Given seed entities, Odin returns ranked, scored paths through a graph using Personalized PageRank, beam search, and learned edge-plausibility scoring (NPLL). It is the compass for AI agents navigating knowledge graphs: structured, explainable evidence rather than hallucinated relationships.

Package: `odin-engine` on PyPI. Import name: `odin`. Python 3.9+. ArangoDB backend, with JanusGraph and custom adapters supported.

## Start here

- [Overview](https://odin.developers.prescottdata.io/): what Odin is and where to begin
- [Getting Started](https://odin.developers.prescottdata.io/getting-started/): install, connect ArangoDB, first retrieval
- [Architecture](https://odin.developers.prescottdata.io/concepts/architecture/): the retrieval pipeline end to end

## Concepts

- [Data Model](https://odin.developers.prescottdata.io/concepts/data-model/): entities, relationships, communities
- [Personalized PageRank](https://odin.developers.prescottdata.io/concepts/ppr/): the structural signal
- [Beam Search](https://odin.developers.prescottdata.io/concepts/beam-search/): bounded multi-hop exploration
- [NPLL Edge Scoring](https://odin.developers.prescottdata.io/concepts/npll/): learned edge plausibility
- [Motifs & Aggregation](https://odin.developers.prescottdata.io/concepts/aggregation/): patterns and summaries
- [Triage & Insight Scoring](https://odin.developers.prescottdata.io/concepts/scoring/): the 0-100 prioritization score
- [Caching](https://odin.developers.prescottdata.io/concepts/caching/): LRU graph access
- [Adapters](https://odin.developers.prescottdata.io/concepts/adapters/): ArangoDB, JanusGraph, custom backends

## Guides

- [Connecting ArangoDB](https://odin.developers.prescottdata.io/guides/arangodb/)
- [Your First Retrieval](https://odin.developers.prescottdata.io/guides/first-retrieval/): the full result shape
- [Scoring Edges](https://odin.developers.prescottdata.io/guides/edge-scoring/)
- [Finding Anchors](https://odin.developers.prescottdata.io/guides/anchors/)
- [Schema Introspection](https://odin.developers.prescottdata.io/guides/schema-introspection/)
- [Model Lifecycle](https://odin.developers.prescottdata.io/guides/npll-lifecycle/)
- [Tuning Retrieval](https://odin.developers.prescottdata.io/guides/tuning/)
- [AI Agent Integration](https://odin.developers.prescottdata.io/guides/agent-integration/)
- [Production Deployment](https://odin.developers.prescottdata.io/guides/production/)
- [AI Editor Setup](https://odin.developers.prescottdata.io/guides/ai-editors/): skill for Copilot, Claude Code, Cursor

## Examples

- [Healthcare Fraud Detection](https://odin.developers.prescottdata.io/examples/healthcare-fraud/)
- [Supply Chain Risk](https://odin.developers.prescottdata.io/examples/supply-chain/)
- [Regulatory Compliance](https://odin.developers.prescottdata.io/examples/compliance/)

## Reference

- [OdinEngine API](https://odin.developers.prescottdata.io/reference/engine/): every method and signature
- [SchemaInspector API](https://odin.developers.prescottdata.io/reference/schema/)
- [Configuration](https://odin.developers.prescottdata.io/reference/configuration/): every parameter and default
- [Result Schema](https://odin.developers.prescottdata.io/reference/result-schema/): the exact shape `retrieve()` returns
- [Troubleshooting](https://odin.developers.prescottdata.io/reference/troubleshooting/)
- [Changelog](https://odin.developers.prescottdata.io/changelog/)

## Enterprise

- [Odin Enterprise](https://odin.developers.prescottdata.io/infrastructure/enterprise/): Odin-2, federation, zero-trust security, domain intelligence, and professional services