# OpenCard

> Build on OpenCard. Real-time card data, digital receipts, zero bullshit.

## Docs

- [Get your account](https://next-developers.opencard.io/api-reference/ems/account/get-your-account.md)
- [Update your account](https://next-developers.opencard.io/api-reference/ems/account/update-your-account.md)
- [EMS Authentication](https://next-developers.opencard.io/api-reference/ems/authentication.md): OAuth2 account_client credentials for the EMS API.
- [Create billing profile](https://next-developers.opencard.io/api-reference/ems/billings/create-billing-profile.md)
- [Create card holder](https://next-developers.opencard.io/api-reference/ems/card-holders/create-card-holder.md): Path A: `email` → PDPC email + eID. Path B: `identity_id` → instant, transactions flow immediately.
- [List card holders](https://next-developers.opencard.io/api-reference/ems/card-holders/list-card-holders.md)
- [Enable issuer](https://next-developers.opencard.io/api-reference/ems/card-issuers/enable-issuer.md)
- [List enabled issuers](https://next-developers.opencard.io/api-reference/ems/card-issuers/list-enabled-issuers.md)
- [List identities on TPA](https://next-developers.opencard.io/api-reference/ems/identities/list-identities-on-tpa.md): Physical persons linked to this TPA. Use `id` as `identity_id` for instant card holder onboarding.
- [Create OAuth client](https://next-developers.opencard.io/api-reference/ems/oauth-clients/create-oauth-client.md)
- [List OAuth clients](https://next-developers.opencard.io/api-reference/ems/oauth-clients/list-oauth-clients.md)
- [Get access token](https://next-developers.opencard.io/api-reference/ems/oauth/oauth/get-access-token.md)
- [Create organization](https://next-developers.opencard.io/api-reference/ems/organizations/create-organization.md)
- [Get organization](https://next-developers.opencard.io/api-reference/ems/organizations/get-organization.md)
- [List organizations](https://next-developers.opencard.io/api-reference/ems/organizations/list-organizations.md)
- [EMS API Overview](https://next-developers.opencard.io/api-reference/ems/overview.md): api.opencard.io — for Expense Management Systems only.
- [Lookup company + signing combinations](https://next-developers.opencard.io/api-reference/ems/public-records/lookup-company-+-signing-combinations.md)
- [OCR scan receipt](https://next-developers.opencard.io/api-reference/ems/receipt-scanner/ocr-scan-receipt.md)
- [Add signatory (sends email)](https://next-developers.opencard.io/api-reference/ems/tpa-signatories/add-signatory-sends-email.md)
- [List signatories](https://next-developers.opencard.io/api-reference/ems/tpa-signatories/list-signatories.md)
- [Create TPA](https://next-developers.opencard.io/api-reference/ems/tpas/create-tpa.md): Creates TPA, fetches registry data, generates legal text.
- [Delete TPA](https://next-developers.opencard.io/api-reference/ems/tpas/delete-tpa.md)
- [Get TPA](https://next-developers.opencard.io/api-reference/ems/tpas/get-tpa.md)
- [List TPAs](https://next-developers.opencard.io/api-reference/ems/tpas/list-tpas.md)
- [Create webhook](https://next-developers.opencard.io/api-reference/ems/webhooks/create-webhook.md)
- [Delivery log](https://next-developers.opencard.io/api-reference/ems/webhooks/delivery-log.md)
- [List webhooks](https://next-developers.opencard.io/api-reference/ems/webhooks/list-webhooks.md)
- [Create callback request](https://next-developers.opencard.io/api-reference/receipts/callback-requests/create-callback-request.md): Submit transaction for receipt matching. OpenCard calls your callback_url when matched.
- [Delete callback request](https://next-developers.opencard.io/api-reference/receipts/callback-requests/delete-callback-request.md)
- [Get callback request](https://next-developers.opencard.io/api-reference/receipts/callback-requests/get-callback-request.md)
- [List callback requests](https://next-developers.opencard.io/api-reference/receipts/callback-requests/list-callback-requests.md)
- [Update (e.g. clearing status)](https://next-developers.opencard.io/api-reference/receipts/callback-requests/update-eg-clearing-status.md)
- [Digital Receipts API Overview](https://next-developers.opencard.io/api-reference/receipts/overview.md): receipts.opencard.io — card issuers request digital receipt matching.
- [List active merchants](https://next-developers.opencard.io/api-reference/receipts/publishers/list-active-merchants.md)
- [Digital Receipts (receipts.opencard.io)](https://next-developers.opencard.io/card-issuers/digital-receipts.md): How card issuers request digital receipt matching from OpenCard.
- [Card Issuer Integration](https://next-developers.opencard.io/card-issuers/index.md): Offer digital receipts to your cardholders via receipts.opencard.io.
- [Card Holder Onboarding](https://next-developers.opencard.io/ems/card-holders.md): Two ways to onboard card holders. Email + eID, or instant via identity_id. Pick the right one.
- [Data Model](https://next-developers.opencard.io/ems/data-model.md): Every entity, every relationship. Text diagram, no images.
- [eID Signing — 4 Countries](https://next-developers.opencard.io/ems/eid-signing.md): How TPA and PDPC signing works via Assently CoreID in SE, DK, NO, FI.
- [Environmental Impact](https://next-developers.opencard.io/ems/environmental-impact.md): CO₂ data on transactions. Åland Index and Deedster.
- [Error Handling](https://next-developers.opencard.io/ems/error-handling.md): HTTP errors, webhook retries, and common gotchas.
- [Organizations](https://next-developers.opencard.io/ems/organizations.md): Your end-clients in OpenCard. One org per customer, usually.
- [PDPC Flow — Cardholder Consent](https://next-developers.opencard.io/ems/pdpc-flow.md): Path A only — email + eID consent. For instant onboarding see identity_id path.
- [Embed Plugins](https://next-developers.opencard.io/ems/plugins.md): ocTPA and ocPDPC JS widgets for self-service flows on your site.
- [Receipt Scanner (OCR)](https://next-developers.opencard.io/ems/receipt-scanner.md): Scan photo receipts via API. Your EMS uploads, OpenCard extracts.
- [Digital Receipts](https://next-developers.opencard.io/ems/receipts.md): How receipt matching works and what webhooks you get.
- [TPA Flow — Full Walkthrough](https://next-developers.opencard.io/ems/tpa-flow.md): Create TPA, add signatories, email, eID signing in 4 countries. Every step, every field.
- [Webhook Event Reference](https://next-developers.opencard.io/ems/webhooks/events.md): Every webhook event, header, and payload. Copy-paste ready.
- [Webhook Setup](https://next-developers.opencard.io/ems/webhooks/setup.md): Create webhook, pass challenge, configure auth. Step by step.
- [Handling Transaction States](https://next-developers.opencard.io/ems/webhooks/transactions.md): authorized vs cleared vs deleted vs invoiced. The logic you need to get right.
- [Authentication](https://next-developers.opencard.io/getting-started/authentication.md): OAuth2 account_client credentials for EMS integrations.
- [Quickstart — Zero to First Webhook](https://next-developers.opencard.io/getting-started/quickstart.md): Complete integration walkthrough. Every API call. No gaps.
- [Register & Setup](https://next-developers.opencard.io/getting-started/register.md): Create your sandbox account and get your first OAuth client.
- [Environments](https://next-developers.opencard.io/introduction/environments.md): Sandbox vs production URLs. Don't mix them up.
- [Glossary](https://next-developers.opencard.io/introduction/glossary.md): Every term you'll see in the API and docs.
- [How It Works](https://next-developers.opencard.io/introduction/how-it-works.md): The OpenCard data model and event flow, explained without corporate fluff.
- [OpenCard Developers](https://next-developers.opencard.io/introduction/index.md): Real-time card data, digital receipts, and webhooks for EMS, card issuers, and receipt providers.
- [About OpenCard](https://next-developers.opencard.io/introduction/welcome.md): What OpenCard does, who it's for, and what lands in your webhook.
- [Callback Delivery](https://next-developers.opencard.io/receipt-providers/callback-delivery.md): Send collected receipts to OpenCard. Headers, signature, payload.
- [How It Works](https://next-developers.opencard.io/receipt-providers/how-it-works.md): Collect receipts, deliver to OpenCard, EMS gets enriched data.
- [Receipt Provider Integration](https://next-developers.opencard.io/receipt-providers/index.md): Collect receipts and deliver them to OpenCard so EMS apps get enriched transaction data.
- [Payload Formats](https://next-developers.opencard.io/receipt-providers/payload-formats.md): How to format receipts you deliver to OpenCard.

## OpenAPI Specs

- [receipts-api](https://next-developers.opencard.io/openapi/receipts-api.json)
- [oauth](https://next-developers.opencard.io/openapi/oauth.json)
- [ems-api](https://next-developers.opencard.io/openapi/ems-api.json)
- [receipt-provider-callback](https://next-developers.opencard.io/openapi/receipt-provider-callback.json)