API DescriptionSettingsFAQ
API Reference

Update a card

post
https://api.mercury.com/api/v1/cards/

Update a card's nickname or spending limits.

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Path Params
uuid
required

Unique identifier for a card

Body Params

At least one updateable field must be provided; requests where every field is the same are rejected.

string | null
required

Updated card nickname. Omit to keep current, send null/empty to clear, send a string to set.

spendLimit
object | null

Updated spending controls for the card. Omit to leave unchanged.

Responses

400

Invalid body

404

cardId not found

Updated about 4 hours ago

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Response
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application/json

Updated about 4 hours ago