GTM API / Get my credits

Return the Sales Navigator InMail credit balance (the LSS_INMAIL grant) for the connected account. Requires a Sales Navigator seat: the balance is read from the Sales Navigator credits API, so an account without a seat is refused with 422 sales_nav_required instead of being dispatched into a guaranteed LinkedIn 403. Contract: - MCP tool get_linkedin_account_my_credits, registry package mcp.linkedin/linkedin_accounts, mount linkedin.accounts. - Operation action, response envelope action. - Flags: read only; paced: a call spends the self_account_sync smart-limit bucket of the account it runs on, and calls of one bucket are spaced per account. A short wait is slept by the server; a longer one answers 429 rate_limited with context.retry_after, and the same call succeeds from that moment. Parallel calls on one account queue behind each other.