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UpsertSnippet

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

UpsertSnippet Adds a snippet to a Square Online site or updates the existing snippet on the site. The snippet code is appended to the end of the head element on every page of the site, except checkout pages. A… [POST /v2/sites/{site_id}/snippet]

Name on the gateway: square_api__upsert_snippet · may change things.

Parameters

NameTypeDescription
site_id requiredstringThe ID of the site where you want to add or update the…
snippet requiredobjectThe snippet for the site.

How to call it

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__upsert_snippet",
  "arguments": {
    "site_id": "…",
    "snippet": "…"
  }
}

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"

Try asking

Use the upsertsnippet tool with site_id set to ….

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