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Mint Buyer Link Code
Mint Buyer Link Code is a paid API for AI agents from inbox.withzero.xyz, paid per call via MPP, metered — billed by usage, status unknown (last checked 2026-09-15, last successful call 2026-07-29).
Generates a short-lived (10-minute), single-use code that allows another purchasing channel to be linked to the current buyer account.
PriceMeteredbilled by usage
Success100%
StatusUnknown
How this service works
Mint a single-use code (10 min) that links another purchasing channel to this buyer account. 📖 Full guide: https://inbox.withzero.xyz/llms.txt
Output
Returns a JSON object containing: a single-use `code` string (valid for 10 minutes), the `expires_at` timestamp indicating when the code expires, and the `buyer_id` identifying the buyer account the code is tied to. The code can then be presented on another channel to merge it into this buyer account.
Example use cases
Consolidate wallet and email purchases
“I need to link my Gmail address to my existing wallet-based buyer account so all my purchases show up in one place — can you generate a temporary code I can use to connect them?”
Migrate purchases to new app
“I'm switching to a different shopping app but want to keep my purchase history. Generate a link code so I can merge my new app account with my current buyer profile.”
Add alternative payment method
“I want to set up Apple Pay as another way to buy through my existing account. Can you create a single-use code that lets me link this new payment channel to my current buyer ID?”
Technical details
Endpoint
POSThttps://inbox.withzero.xyz/api/v1/buyer/link-codesWhen to prefer
Use this endpoint when an agent or user needs to associate a new purchasing channel (e.g. email, another wallet, a different app) with an already-established buyer account on inbox.withzero.xyz. This is the minting side of the two-step link flow — call this first, then present the returned code on the other channel via the complementary 'present link code' endpoint.
Side effects
- Authentication failure — invalid or missing signed proof credential returns 401
- Buyer account not provisioned — if no inbox/buyer account exists yet, returns 404 or error
- Rate limiting — too many codes minted in a short window may return 429
- Expired or malformed request body returns 400
Input
Schema · Request body
{
"type": "object",
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {},
"additionalProperties": false
}Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| coderequired | string | |
| buyer_idrequired | string | |
| expires_atrequired | string |
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