In the wild.
70+ examples. One primitive. Across industries and data flows.
Polymonial does a lot. These use case examples show how — across the flows your business already runs (a CSV, an API, an EDI feed, a healthcare record exchange etc) and the problems it already faces (proving compliance, sharing data with partners, migrating off legacy crypto etc). Filter by your sector, the data flow you have today, the theme you care about, or the problem you’re trying to solve.
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EXA2
Finance
Investor Due Diligence
Prove your financials match every diligence criterion — without opening a data room.
EXA4
Finance
Tenant References
Prove you qualify to rent — without handing over months of bank statements.
EXA6
Finance
Sanctions Screening
Screen your customers against sanctions lists — neither side sees the other's data.
EXA7
Finance
Trade Finance
Prove every clause of a letter of credit is satisfied — without exposing the trade.
EXA8
Finance
KYC Once, Reuse Many
Onboard once. Prove your identity to many institutions. Never re-upload a document.
EXA10
Insurance
Insurance Underwriting
Get a quote that reflects your real risk — without handing over your medical history.
EXA14
PublicSector
Sovereign AI Inference
Query foundation models hosted outside your jurisdiction without the prompt or response leaving home — Schrems II / FedRAMP High / DoD IL5 / EU AI Act Article 16 conformance via cryptography rather than via dedicated sovereign clouds.
EXA16
Universal
Private LLM Inference
Use the best LLM in the market — without exposing your prompts to the provider.
EXA20
Universal
Age Verification
Prove this user is over 18 — no name, no date of birth, no document upload.
EXA22
PublicSector
National ID Without Surveillance
A national identity scheme citizens trust — usable everywhere, observable nowhere.
EXA23
PublicSector
Election Integrity
Every voter gets a receipt. The total is publicly verifiable. Ballot secrecy holds.
EXA24
Media
Whistleblower Communication
Multi-hop confidential reporting where every byte of metadata reveals nothing.
EXA37
Universal
API Schema Wrapping
Wrap your existing OpenAPI in cryptographic policy enforcement — same callers, same endpoints, less leakage.
EXA40
Healthcare
FHIR Selective Disclosure
When healthcare systems exchange a Patient resource today, the receiver gets the full record — Polymonial wraps each FHIR field so they get only what their role requires.
EXA43
Universal
Privacy-Preserving Webhooks
SaaS webhooks deliver full event payloads to your endpoint — Polymonial wraps the payload so you unseal only the fields you actually need.
EXA47
Universal
Customer-to-Customer Sharing
Two of your SaaS customers want to share data — today's API integrations grant full read access. Polymonial gives field-level partnerships.
EXA50
Universal
Email Attachment Sealing
The biggest data leak in your organisation isn't a hacker — it's that email you sent yesterday with the customer spreadsheet attached.
EXA51
Universal
Internal Report Distribution
One Monday-morning exec report ships to ten inboxes today — Polymonial gives each exec their own view from the same sealed file.
EXA52
Universal
GDPR Subject Access Response
The Subject Access Request bundle that doesn't expose the subject — assemble from sealed slices, ship as a sealed package.
EXA54
Finance
Third-Party Data Feed Queries
Pay for the market-data, credit-reference, or weather feed without giving the vendor a free intelligence feed on your strategy.
EXA55
Universal
Customer Support Ticket Privacy
Customers paste credentials into support tickets — Polymonial detects and seals before tier-1 sees them.
EXA56
Universal
Document Signing Privacy
Multi-party contracts share the entire document — Polymonial gives each signatory only the slice they need to see.
EXA57
Universal
Mobile App Telemetry
Your app uploads everything the user touches — Polymonial seals events so the backend gets analytics, not behavioural fingerprints.
EXA59
Universal
Sealed Bids in Procurement
Procurement teams see all bids before deciding — Polymonial seals each bid so nobody peeks before the deadline.
EXA60
Universal
HR Onboarding Fan-Out
One new-hire form fans out to 7 systems — Polymonial gives each system only the fields it needs.
EXA61
Universal
Cross-Border Data Transfer
Schrems II says assume hostile foreign surveillance — Polymonial says the surveiller finds nothing usable.
EXA65
Insurance
Insurance Claims
Settle a claim in the browser — without the policy, the diagnosis or the loss report ever leaving the claimant.
EXA66
Finance
Loan Decisioning
Prove you qualify for the loan — without handing the lender your entire financial life.
EXA69
Universal
AI Agent Identity
Prove an autonomous agent is who it claims and authorised to act — with no central identity honeypot.
EXA70
Healthcare
Confidential Diagnostics
Run the diagnostic model in the browser — the patient scan never leaves the device.
EXA72
Telecoms
Proven Message Rail
Prove every message is authentic and unaltered — without the rail operator ever reading it.