Nucleus

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What Nucleus is

Nucleus is a knowledge infrastructure layer for collecting information in one searchable knowledge base and making it available across AI tools. It can ingest PDFs, Gmail, Google Drive, and web URLs. Search combines semantic and keyword methods, with entity extraction and a knowledge graph built with Neo4j. Its document chat is described as answering from source documents and including citations.

A feature called COVE checks factual claims against the knowledge base and labels them verified, contradicted, or unverifiable, with source attribution. Nucleus says MCP-compatible tools such as Claude, ChatGPT, Gemini, and Cursor can connect to the knowledge base through OAuth connectors. Developers can use the REST API for verification, knowledge-base search, and document management; API keys can be set to read, write, or admin access. The knowledge base page lists workspace-level, role-based permissions and document version tracking with an audit trail. The terms list SOC 2 Type I and II, ISO 27001:2022, ISO/IEC 42001:2023, and configurable HIPAA support with a BAA for eligible services. The homepage invites visitors to start free and join the beta, while pricing is available on request.

Who it suits

Nucleus is aimed at teams that need to organize source material for AI-assisted search or answers, including legal, medical, strategic intelligence, venture capital, and financial services teams. It also suits developers seeking API access to verification, search, and document management.

What it does well

Ingests PDFs, Gmail, Google Drive, and web URLs.
Document chat answers include citations to source documents.
COVE labels checked claims with source attribution.
MCP-compatible AI tools can access the knowledge base through OAuth connectors.
Lists role-based permissions and document version tracking with an audit trail.

What to know first

Pricing is available on request.
Beta services are provided as-is and excluded from SLA commitments.
Beta data may be retained for up to 90 days unless ZDR is elected.

Limits

The homepage says access is free to start but does not give plan limits. Beta services have no SLA commitment and may retain beta data for up to 90 days unless ZDR is elected.

Getting started

Visit https://nucleus.ae/ and use the homepage invitation to join the beta.
Add PDFs, Gmail, Google Drive, or web URLs as knowledge sources.
Connect an MCP-compatible AI tool through an OAuth connector, or use the REST API with an API key.

Verdict

Consider Nucleus if your team needs a searchable knowledge base that connects to AI tools and provides sourced answers or claim verification. Teams should ask about pricing and review beta terms, including the absence of SLA commitments for beta services.

Questions

Does Nucleus have a free plan?

The homepage says “Free to start” and invites visitors to join the beta. It does not give a price or plan limits there.

How much does Nucleus cost?

Pricing is available on request.

What information can it ingest?

It supports PDFs, Gmail, Google Drive, and web URLs.

Which AI tools can connect?

Nucleus says MCP-compatible tools including Claude, ChatGPT, Gemini, and Cursor can access its knowledge base through OAuth connectors.

Does Nucleus provide an API?

Yes. Its REST API provides verification, knowledge-base search, and document management; API keys can have read, write, or admin access.

What security standards and support does it list?

The terms list SOC 2 Type I and II, ISO 27001:2022, ISO/IEC 42001:2023, and configurable HIPAA support with a BAA for eligible services. For Enterprise, response targets range from one hour for critical issues to 72 hours for low priority.

Facts from Nucleus's own pages

Access controls: The knowledge base page lists workspace-level, role-based permissions and document version tracking with a full audit trail. · nucleus.ae, 4 Oct 2026
AI integrations: Nucleus says MCP-compatible AI tools including Claude, ChatGPT, Gemini, and Cursor can access its knowledge base through OAuth connectors. · nucleus.ae, 4 Oct 2026
Beta limitations: The terms say beta services are provided as-is without warranties, excluded from SLA commitments, and may retain beta data for up to 90 days unless ZDR is elected. · nucleus.ae, 4 Oct 2026
Company security: The terms list SOC 2 Type I and II, ISO 27001:2022, ISO/IEC 42001:2023, and configurable HIPAA support with a BAA for eligible services. · nucleus.ae, 4 Oct 2026
Data security: The terms specify AES-256 encryption at rest, TLS 1.3 in transit with TLS 1.2 minimum, and role-based access controls. · nucleus.ae, 4 Oct 2026
Developer access: The REST API provides access to verification, knowledge-base search, and document management, with API keys that can have read, write, or admin access. · nucleus.ae, 4 Oct 2026
Free access: The homepage says “Free to start” and invites visitors to join the beta; it does not give a price or plan limits there. · nucleus.ae, 4 Oct 2026
Grounded answers: Nucleus says its document chat answers are grounded in source documents and include citations. · nucleus.ae, 4 Oct 2026
Intended users: Nucleus presents use cases for legal, medical, strategic intelligence, venture capital, and financial services teams. · nucleus.ae, 4 Oct 2026
Knowledge sources: It supports ingesting PDFs, Gmail, Google Drive, and web URLs into a searchable knowledge base. · nucleus.ae, 4 Oct 2026
Product: Nucleus describes itself as a knowledge infrastructure layer that lets users add information once and make it available across AI tools. · nucleus.ae, 4 Oct 2026
Search and graph: The knowledge base offers hybrid semantic and keyword search, entity extraction, and a knowledge graph built with Neo4j. · nucleus.ae, 4 Oct 2026
Support: For Enterprise, the terms list response targets of 1 hour for critical, 4 hours for high, 24 hours for medium, and 72 hours for low priority issues. · nucleus.ae, 4 Oct 2026
Verification: COVE checks factual claims against a knowledge base and labels them verified, contradicted, or unverifiable, with source attribution. · nucleus.ae, 4 Oct 2026

Where Nucleus stands on Freedom251

AI Knowledge Base Software#14 of 36