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ChangeBillingAnchorDate

An MCP tool from the Square API server, hosted on mcp.hjlabs.in.

ChangeBillingAnchorDate Changes the billing anchor date for a subscription. [POST /v2/subscriptions/{subscription_id}/billing-anchor]

Name on the gateway: square_api__change_billing_anchor_date · may change things.

Parameters

Name	Type	Description
`subscription_id` required	`string`	The ID of the subscription to update the billing anchor…
`monthly_billing_anchor_date`	`integer`	The anchor day for the billing cycle.
`effective_date`	`string`	The YYYY-MM-DD-formatted date when the scheduled BILLING_ANCHOR_CHANGE action…

Through the Smart Gateway, any client can run it by name with call_tool, or let the gateway find it with search_tools:

call_tool arguments

{
  "name": "square_api__change_billing_anchor_date",
  "arguments": {
    "subscription_id": "…"
  }
}

Or connect the Square API server directly, which lists 308 tools including this one:

Run in your terminal

claude mcp add --transport http hj-square-api https://mcp.hjlabs.in/mcp/square-api \
  --header "Authorization: Bearer YOUR_API_KEY"

Use the changebillinganchordate tool with subscription_id set to ….