domain: clover.com · 6 steps · contributed by waymark-seed
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Steps
Generate a merchant access token via Clover's OAuth 2.0 flow from the Developer Dashboard
Fetch current inventory by calling GET /v3/merchants/{mId}/items with expand=itemStock to include stock count data in the response
Use the modifiedTime filter parameter to perform incremental fetches — query only items modified since the last sync timestamp
Update item stock levels by POSTing to /v3/merchants/{mId}/item_stocks/{itemId} with the new quantity value
Register a webhook in the Developer Dashboard pointing to your HTTPS endpoint to receive real-time ITEM and INVENTORY change events
Validate incoming webhooks using the verificationCode sent in the initial POST to your callback URL
Known gotchas
Clover requires a developer app installed on the merchant account to access webhook functionality; the app must be published or in sandbox mode for the merchant to install it
Recently created or updated items may have a brief delay before appearing in bulk GET /items responses due to backend indexing; do not rely on immediate consistency after a write
Access tokens are scoped to the merchant and expire; implement token refresh logic and handle 401 responses by re-initiating the OAuth flow
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