How Clausix analyzes contracts.
Honest and specific.
What the AI checks, how accurate it is, what it can't do, and how your data is handled. No marketing fluff.
The AI model: Claude by Anthropic
Reads up to ~150 pages in a single pass. No chunking, no lost context between sections.
Claude consistently scores among the highest AI models on legal and long-document benchmarks.
Built by an AI safety company focused on reliable, interpretable AI — not optimized for engagement.
Clausix uses Claude via Anthropic's API. Unlike general-purpose AI tools, the analysis is structured — Claude is given a specific framework for what to look for, in what order, with what output format. This produces consistent, comparable results across contract types rather than free-form summaries that vary in depth.
The analysis process
Document parsing
Your uploaded PDF or Word file is parsed to extract plain text. Clausix preserves the structure of the document — sections, headings, and clause numbering — so the AI understands the context of each provision.
Jurisdiction detection
The governing law clause is identified and the applicable jurisdiction extracted. This determines which statutes and legal standards apply to the rest of the analysis. If no governing law is specified, Clausix flags this as a risk.
Structured risk analysis
Claude reads the entire contract in a single pass (up to ~150 pages / 200K tokens) and runs a structured analysis across 9 risk categories: liability, termination, IP, payment, restrictive covenants, auto-renewal, confidentiality, dispute resolution, and jurisdiction-specific issues.
Key term extraction
Parties, dates, financial terms, and critical provisions are extracted and structured. Each term is categorized (parties, financial, IP, liability, etc.) and presented in a scannable format.
Risk scoring
A composite risk score (0–100) is calculated based on the severity and number of flagged issues, weighted by category. The breakdown shows which dimensions (liability, IP, payment, etc.) contributed most to the score.
Plain-English summary + action items
Claude generates a plain-English summary explaining the contract's overall posture — who it favors, what the key risks are, and what's missing. Prioritized action items give specific next steps with negotiation leverage.
What Clausix does well
Clausix is optimized for the patterns that appear in commercial contracts and cause the most problems for the people who sign them. These are things it identifies reliably:
- Identifying missing liability caps in indemnification clauses
- Flagging auto-renewal provisions and calculating opt-out deadlines
- Detecting one-sided termination rights and asymmetric notice periods
- Spotting full IP assignment language and missing portfolio rights
- Identifying overbroad non-compete and non-solicitation clauses
- Citing specific statutes for 31+ US and international jurisdictions
- Extracting payment terms, milestones, and late-payment provisions
- Detecting mandatory arbitration, class-action waivers, and venue restrictions
- Flagging confidentiality definitions with no carve-outs
- Identifying force majeure scope, assignment restrictions, and governing law conflicts
Known limitations
We believe in honest tools. Here are the specific cases where Clausix may be less accurate:
Highly unusual or bespoke legal structures
Clausix is trained on standard commercial contract patterns. Highly customized financial instruments, complex M&A structures, or jurisdiction-specific specialty contracts (admiralty law, securities regulation) may be analyzed with less precision.
Cutting-edge case law and recent statutory changes
Claude's knowledge has a training cutoff. For rapidly evolving areas of law (AI regulation, emerging privacy laws, FTC enforcement trends), Clausix provides the best available analysis but may not reflect the most recent developments.
Handwritten, scanned, or heavily formatted PDFs
Contracts that are scanned images (rather than text-based PDFs), heavily formatted with tables, or contain significant handwriting may not parse accurately. Always verify the text extraction is complete before reviewing the analysis.
Legal advice and professional judgment
Clausix identifies patterns and surfaces information — it does not advise on whether to sign, what specific negotiation strategy to pursue, or how a court would rule in a dispute. That requires a licensed attorney with knowledge of your specific situation.
Jurisdiction coverage
Clausix detects the governing law in your contract and surfaces specific statutes — not generic summaries. Jurisdictions with deep coverage include:
United States (all 50 states + federal)
International
Jurisdiction coverage is continuously expanded. For contracts governed by jurisdictions not listed, Clausix still performs full structural analysis — statute citations may be limited.
Privacy & data handling
Contract text storage
Not stored permanently — discarded after analysis
Analysis results
Saved to your account — deletable at any time
AI training
Your data is never used to train any AI model
Third-party sharing
Never sold or shared with advertisers or third parties
Encryption
256-bit TLS in transit; AES-256 at rest for analysis data
Compliance
GDPR-aligned; SOC 2 Type II in progress
Not legal advice
Clausix is an AI-powered informational tool. It is not a law firm and does not provide legal advice. The analysis is intended to help you understand your contract and identify issues to discuss — not to substitute for the judgment of a licensed attorney. For high-stakes contracts, complex transactions, or legal disputes, always consult a qualified lawyer in your jurisdiction.
See it in action
Scan a contract and see the full analysis — risk score, flags, statute citations, and action items.