> For the complete documentation index, see [llms.txt](https://docs.toolkit.equs.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.toolkit.equs.ai/standards/issuance/flow-1/auto-issuance/method-1-api.md).

# Method 1: API

Create an auto-issuance Offer from your back end in a single call

**Before you start** you need an [Issuer and VC Schema](/standards/issuance/configuration-issuer-and-vc-schema.md), and your identity provider registered with the platform - see [Bring Your Own IdP](/standards/onboarding/bring-your-own-idp.md). The Holder has to be signed in to an EQUS Wallet as one of your users, or the Offer cannot be auto-issued.

### Create the Offer

One call to `POST /api/v1/oid4vci/offers`. `userId` is your own identifier for the Holder - the same subject your IdP reports when they sign in to the wallet. `autoIssuance.email` is where the notification goes.

{% hint style="info" %}
The address in `autoIssuance.email` is used to notify the Holder and is **not** stored. The claim values you send **are** stored - encrypted, scoped to your Tenant - until the credential is issued, or for five days if it never is.
{% endhint %}

The presence of `autoIssuance` is what makes this an auto-issuance Offer. There is no delivery call to make and no link for you to share - the Offer lands in the Holder's Pending Offers by itself, announced by email and a push notification.

{% hint style="info" icon="rectangle-api" %}
All calls mentioned on this page are on the [Integration API](https://docs.toolkit.equs.ai/standards/issuance/flow-1/auto-issuance/pages/MvAvsnLQU3ER2hOIIDU2#id-2.4.1-apis).
{% endhint %}

## Create Credential Offer

> Create Credential Offer with provided claims based on VC Schema Version and Issuer. Optionally, intended User ID can be provided

```json
{"openapi":"3.0.0","info":{"title":"EqusDTK Integration API Documentation","version":"0.1.2"},"tags":[{"name":"Oid4Vci","description":""}],"security":[{"sp":[]},{"tenant":[]},{"sp":[]}],"components":{"securitySchemes":{"sp":{"type":"http","scheme":"bearer","bearerFormat":"JWT","description":"Service Provider. Token of the Service Provider client in the `agents` realm, with no `tenantId` claim. Authorize one bearer scheme at a time."},"tenant":{"type":"http","scheme":"bearer","bearerFormat":"JWT","description":"Tenant. Token of a Tenant machine client or of a Tenant portal user, carrying the `tenantId` claim. Authorize one bearer scheme at a time."}},"schemas":{"CreateCredentialOfferRequest":{"type":"object","properties":{"vcSchemaVersionId":{"type":"string","description":"VC schema version unique ID"},"claims":{"type":"object","description":"Claims to include in the issued credential."},"issuerId":{"type":"string","description":"Issuer unique ID"},"userId":{"type":"string","description":"User unique ID"},"autoIssuance":{"description":"When provided, the offer is automatically bound and issued to the given holder.","allOf":[{"$ref":"#/components/schemas/AutoIssuance"}]}},"required":["vcSchemaVersionId","claims","issuerId","userId"]},"AutoIssuance":{"type":"object","properties":{"email":{"type":"string","description":"Email address the offer notification is sent to when auto-issuance completes."}},"required":["email"]},"CreateCredentialOfferResponse":{"type":"object","properties":{"params":{"description":"OID4VCI credential offer parameters.","allOf":[{"$ref":"#/components/schemas/OfferParams"}]},"byValue":{"type":"string","description":"Credential offer deep link encoding the offer payload by value."},"byReference":{"type":"string","description":"Credential offer deep link referencing the offer by URI."},"txCode":{"type":"string","description":"Transaction code the holder must input to accept the offer."},"uriId":{"type":"string","description":"Credential offer URI unique ID"}},"required":["params","byValue","byReference","txCode","uriId"]},"OfferParams":{"type":"object","properties":{"credential_issuer":{"type":"string","description":"Base URL identifying the credential issuer."},"credential_configuration_ids":{"description":"Identifiers of the credential configurations offered.","type":"array","items":{"type":"string"}},"grants":{"description":"Grants supported for redeeming this credential offer.","allOf":[{"$ref":"#/components/schemas/OfferGrants"}]}},"required":["credential_issuer","credential_configuration_ids"]},"OfferGrants":{"type":"object","properties":{"urn:ietf:params:oauth:grant-type:pre-authorized_code":{"description":"Pre-authorized code grant details.","allOf":[{"$ref":"#/components/schemas/OfferGrantPreAuth"}]}}},"OfferGrantPreAuth":{"type":"object","properties":{"pre-authorized_code":{"type":"string","description":"Pre-authorized code the wallet exchanges for an access token."},"tx_code":{"description":"Transaction code requirements for the pre-authorized code grant.","allOf":[{"$ref":"#/components/schemas/PreAuthTxCode"}]},"authorization_server":{"type":"string","description":"Identifier of the authorization server issuing the pre-authorized code grant."}},"required":["pre-authorized_code"]},"PreAuthTxCode":{"type":"object","properties":{"input_mode":{"type":"string","description":"Format expected for the user-entered transaction code."},"length":{"type":"number","description":"Expected length of the transaction code."},"description":{"type":"string","description":"Human-readable guidance shown to the user for entering the transaction code."}}}}},"paths":{"/api/v1/oid4vci/offers":{"post":{"description":"Create Credential Offer with provided claims based on VC Schema Version and Issuer. Optionally, intended User ID can be provided","operationId":"Oid4VciController_createCredentialOffer_api/v1","parameters":[],"requestBody":{"required":true,"content":{"application/json":{"schema":{"$ref":"#/components/schemas/CreateCredentialOfferRequest"}}}},"responses":{"200":{"description":"When Offer is created successfully.","content":{"application/json":{"schema":{"$ref":"#/components/schemas/CreateCredentialOfferResponse"}}}},"400":{"description":"- When no VC Schema Version exists with such id.\n- When no Issuer exists with such id.\n- When the Credentials don't match the schema."}},"summary":"Create Credential Offer","tags":["Oid4Vci"]}}}}
```

### Track the result

Every Offer leaves a record you can read at any time, and it is where you find the handle you need to revoke the credential later. See [Issuance Results](/standards/issuance/issuance-results.md).


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