# CiteNexus > An evidence-integrity layer for retrieval, in Go, JavaScript and Python. Answers only from cited evidence — the exact quote and page — and abstains when the evidence is weak, missing or conflicting. The guarantee is "no ungrounded claim". Python is the batteries-included facade (ingest/ask/evaluate, injected models, S3); Go and JS expose the deterministic cite-or-abstain core at conformance parity. Use CiteNexus when a wrong answer is worse than no answer (legal, medical, finance/compliance, enterprise search). Every model is injected (OpenAI-compatible); CiteNexus owns orchestration, storage, retrieval, fusion, grounding, and evaluation. It never guesses: if no retrieved passage supports the question, it emits the pinned refusal "I can't answer that from the available evidence." ## Documentation Sets - [Abridged documentation](https://muthuishere.github.io/citenexus/llms-small.txt): a compact version of the documentation for CiteNexus, with non-essential content removed - [Complete documentation](https://muthuishere.github.io/citenexus/llms-full.txt): the full documentation for CiteNexus ## Notes - The complete documentation includes all content from the official documentation - The content is automatically generated from the same source as the official documentation