Retainer runs on your own machine — the client starts it, so there is no endpoint to ping. Last commit 9 Sep 2026.
Client retainers held on account: record one, draw it down against invoices, refund it.
Nothing serious here today
Today is the operative word: we check Retainer every 15 minutes and re-read its code on every release. Watch it and you find out the day that stops being true.
Alternatives to Retainer
same job, measured the same waySecurity and retainer deposits per client: hold, apply to an invoice, refund, statement.
Take a client deposit, hold it, set it against an invoice or give it back.
MCP server for QuickBooks Online — accounts, customers, invoices, bills, and reports.
MCP server for QuickBooks Online — accounts, customers, invoices, bills, and reports.
QuickBooks MCP Pack — query customers, invoices, and accounts via QuickBooks Online API.
MCP server for QuickBooks Online (Intuit) — customers, invoices, payments, items, accounts, P&L
Statements of account, aging buckets and dunning letters from your invoices.
Credit notes against your invoices and purchase orders to suppliers, with VAT and A4 PDFs.
Retainer — questions
Answers built from our own checks of this server.