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POST

Authorizations

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Authorization
string
header
required

A JWT signed using the developer's own JWT private key (in the case of JWT authentication), or an end user JWT signed by CDP, encoded in base64. This is used for End User Account APIs.

Headers

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X-Wallet-Auth
string

A JWT signed using your Wallet Secret, encoded in base64. Refer to the Generate Wallet Token section of our Authentication docs for more details on how to generate your Wallet Token.

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X-Idempotency-Key
string

An optional string request header for making requests safely retryable. When included, duplicate requests with the same key will return identical responses. Refer to our Idempotency docs for more information on using idempotency keys.

Required string length: 1 - 128
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X-Developer-Auth
string

A JWT signed using your Wallet Secret, encoded in base64. Refer to the Generate Wallet Token section of our Authentication docs for more details on how to generate your Wallet Token.

Path Parameters

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userId
string
required

The ID of the end user.

Pattern: ^[a-zA-Z0-9-]{1,100}$
Example:

"e051beeb-7163-4527-a5b6-35e301529ff2"

Query Parameters

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projectID
string

The ID of the CDP Project. Required for end users authenticated using custom auth (i.e. a non-CDP JWT provider).

Pattern: ^[0-9a-f]{8}-[0-9a-f]{4}-4[0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$
Example:

"8e03978e-40d5-43e8-bc93-6894a57f9324"

Body

application/json
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paymentRequired
object
required

The complete x402 payment required response body from the resource server. Top-level fields (x402Version, resource, error, extensions) are preserved in the signed payment payload; acceptsIndex selects which entry from accepts is signed as paymentPayload.accepted.

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acceptsIndex
integer
required

Zero-based index into paymentRequired.accepts selecting which payment option to sign. Must be less than the length of accepts. The entry at this index must be a Solana network payment option for this endpoint.

Required range: x >= 0
Example:

0

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address
string
required

The base58 encoded address of the end user's Solana account to sign with.

Pattern: ^[1-9A-HJ-NP-Za-km-z]{32,44}$
Example:

"HpabPRRCFbBKSuJr5PdkVvQc85FyxyTWkFM2obBRSvHT"

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walletSecretId
string

Required when not using delegated signing. The ID of the Temporary Wallet Secret that was used to sign the X-Wallet-Auth Header.

Pattern: ^[a-zA-Z0-9-]{1,100}$
Example:

"e051beeb-7163-4527-a5b6-35e301529ff2"

Response

Successfully signed x402 payment payload.

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paymentPayload
x402V2PaymentPayload · object
required

The signed x402 payment payload. Base64-encode this and send it in the PAYMENT-SIGNATURE header of the resource request.

Example: