About Assembly
Assembly is a client operations platform for service firms. It combines a CRM for contacts and companies, a branded client experience on the firm's own domain where clients message the team, share files, sign contracts and pay, and more than 30 ready made apps for intake, onboarding, proposals, payments and project tracking. Where an app is missing, an AI builder creates one from a written description.
It is aimed at accounting practices, agencies, consultancies and other firms that currently run client work across separate tools. The builder works in four steps: describe what you want, approve the plan, publish, then keep refining by chat. Published apps arrive in the workspace with sign in, permissions and branding already handled, and each app runs in its own sandbox. The company states that authentication, permissions and data isolation are platform infrastructure rather than generated code, and that it holds SOC 2 Type II certification. Higher plans add custom domains, removal of the Assembly badge, an automation builder, model selection, audit logs, client access permissions, enforced multi factor authentication and a HIPAA business associate agreement.
Published plans are Free at $0 with five active contacts, one internal user and 50 build credits a month, Starter at $29 per month billed annually with 50 contacts and an API and MCP connector, Professional at $99 per month billed annually with 500 contacts and three users, and Advanced at $499 per month billed annually with unlimited contacts and five users. Enterprise is quoted on request. Paid plans include 200 build credits a month, extra credits cost $0.60 each, and extra apps beyond the five included cost $5 per month each. Starter is $49 when billed monthly rather than annually.