GTM API / Check premium subscription

Refresh the account's subscription state and persist it: Premium, the Sales Navigator and Recruiter seats, and the InMail balances (self-probe, no target, no credits). checks picks which of those four to run and omitting it runs all four, which is the call you want when you just need the picture. Ask for a subset when you need one answer cheaply: recruiter reads a marker in the already-open tab, while the full run opens a background tab for the profile. Each result is written to the account record, and a probe that fails leaves the previous value alone rather than clearing it, so a failure never reads as "seat lost". On the full run a false Premium settles both seats without probing them, because each includes Premium. A Recruiter seat whose member holds several contracts is bound to the only corporate contract on offer by this check itself; with several on offer the seat stays unstamped until the seat holder picks one in the account's browser. Contract: - MCP tool check_linkedin_account_premium_subscription, 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.