Customers
5 min read
How Ledgerline signed up 41,000 agents without a sales call
An invoicing tool, a weekend with Opero and a new kind of customer. Half of last quarter’s accounts were agents.
Maya Lindqvist
Ledgerline noticed strange traffic: thousands of sessions that filled the sign-up form perfectly, failed the CAPTCHA and gave up. They were agents, trying to send invoices for their owners.
Opening the front door
The team pointed Opero at their existing API spec. By Monday they had an MCP server, a CLI and an llms.txt file live, plus an agent sign-up endpoint with spend caps.
The results
41,000 agent accounts later, support tickets from agents sit at zero. Median time from discovery to first paid call is 41 seconds.