Contact and support

Help with your service or payment.

For API access, integration questions, incidents or data rights, email herbreteaunicolas1@gmail.com.

Business telephone: +33 (0)6 79 84 93 62. Email is preferred for technical requests.

Help us identify the issue

Include your organisation, request reference if available, affected endpoint, approximate time with timezone and the observed error code. For billing, include the invoice reference or account email.

Never send API keys, passwords, full card numbers, identity documents or end-user credential payloads. Use a redacted technical example.

Orders and API budget access

For new API purchases, choose an exact total from €10 to €10,000, including applicable taxes, in an eligible billing country. This is a one-time payment, with no subscription or automatic recharge. The net amount funds your available API operations. An access request or account registration does not charge you or grant paid API access.

Use budget recovery with your saved private code to check your payment and remaining balance. There is no automatic email delivery of that private code. If you lose its saved file and browser copy, contact support with the payment receipt reference before paying again; do not send card details or secrets. That code also grants API access; follow the API documentation. Save each report when you receive it: we do not store reports or submitted documents for this budget.

Previously accepted subscriptions retain their own terms. Use existing guest subscription recovery or sign in to your existing account for their access and billing controls. A checkout redirect alone is not payment confirmation. If you have a payment receipt but access is unavailable, contact Xynthera with the receipt reference before attempting another payment.

Payments, cancellation and refunds

If your receipt identifies the order as Sold through Link, use Link support for payment, invoice, subscription or refund questions. You can manage eligible orders, payment details and subscriptions through Link. Xynthera remains your contact for the API product and integration.

You may also contact Xynthera about a refund. Stripe may ask us for information and may refund a transaction if we do not respond within 48 hours. This is a provider response window, not a promise that a refund will be approved or received within 48 hours. Refund requests follow the applicable purchase terms and law.

For a directly agreed pilot or existing direct subscription, contact Xynthera or use the billing portal already provided for that agreement. Cancellation timing is shown in the applicable confirmation; cancelling future renewals does not itself request a refund for an earlier charge. See the service and billing conditions.

Service incidents

You can inspect the Assurance health endpoint. This is the existing Assurance family, not a health test of the three prepaid checks. A healthy endpoint alone does not prove a particular trust source is fresh or sufficient for your use case.

Standard access has no 24/7 response-time commitment or contractual uptime SLA. Any different commitment must be agreed in writing.

Privacy requests

Use the subject “Xynthera AI — privacy request” for data handled by Xynthera. We may ask only for the information needed to verify the requester's identity. Contact Link separately for Link account or transaction data. See the privacy notice.