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Turns a signed engagement letter into a complete onboarding: a tailored document checklist, automatic follow-ups on missing items, a scheduled kickoff, and weekly status emails drafted for staff approval. Designed for accounting and advisory firms.
Solution blueprint: a system Callimachus Forge can architect for your operation. Not a case study, and not a claim of past deployment.
At a glance
Stack candidates
n8n · GoHighLevel · Typeform · Gmail or Outlook · Calendly · Twilio · Airtable · QuickBooks
System run
A simulated run of the exact steps documented on this page, from first trigger to final handoff. Nothing here is live client activity.
Simulation · Loops
The problem
New clients decide quickly whether a firm is organized, and the first weeks after a signed engagement letter are mostly administrative: collecting documents, answering the same questions, scheduling the first meeting. In most accounting and advisory firms this work sits in one coordinator's inbox. Requests go out late, uploads arrive unnamed, and nobody can say what is still missing without rereading a long email thread. Meanwhile, active clients hear nothing between deliverables, so they call, and staff stop billable work to reconstruct a status from the job tracker. The firm's expertise is not the problem. The mechanics of intake and communication are.
This blueprint fits accounting and advisory firms where every engagement starts with a document collection phase and runs for weeks or months: tax preparation, bookkeeping cleanup, audit support, fractional CFO work. The firm already has an engagement letter process, an email system, and some form of job tracking, often a spreadsheet. Intake is usually owned by an office manager or the partner who sold the work. Document requests differ by service line: a tax engagement needs different items than a CFO engagement. Status communication is ad hoc, sent when a client asks or a deliverable ships. The design layers onto the tools the firm already uses instead of replacing them.
The manual process
The automation opportunity
The signed engagement letter is the natural trigger. From that moment, a system can read the letter, work out what kind of engagement it is, and build the exact document list this client needs to provide. It sends the welcome email, watches uploads arrive, checks items off, and follows up on anything missing at a steady, polite cadence. Staff step in at two points: confirming the document set is complete before kickoff, and approving the short weekly status email the system drafts for every active client. Reminders follow rules the firm sets, and anything written by AI is approved by a person before it reaches a client. The coordinator stops being the bottleneck and becomes the reviewer.
Architecture
Every step is typed: triggers, AI decision points, business logic, actions, data, and the human checkpoints that keep judgment where it belongs.
AI components
Human checkpoints
A webhook fires when the e-signature tool marks the engagement letter signed or the client submits the intake form. The event carries the client's name, contact details, service line, and form answers into the workflow.
n8n writes or updates the client in the CRM, sets the pipeline stage to Onboarding, and creates an engagement row in the tracking base with a unique id that every later step references.
A language model reads the engagement letter and intake answers, classifies the service line, and adapts the matching checklist template: entity type, filing year, and known lenders change which items appear.
The client receives a welcome email with the kickoff scheduling link and a secure upload link tied to their engagement id. The checklist is written in plain language, with an example for any unusual item.
As files arrive, a model reads each one and labels it (bank statement, prior year return, payroll report), then matches it to a checklist item. Low confidence labels route to a person instead of being auto-filed.
n8n marks matched items complete and computes what is outstanding. Missing items trigger a reminder sequence, email first and then SMS, spaced over days. The sequence stops the moment the item arrives.
When the checklist shows complete, the assigned staff member gets a review task. They open the filed documents, confirm nothing is mislabeled or unusable, and click approve. Nothing kicks off until they do.
On approval the system confirms the kickoff meeting, creates the engagement task list in the tracker, notifies the team channel, and moves the CRM stage to Active.
On a weekly schedule, the workflow pulls each active engagement's task states and recent notes, and a model drafts a short plain-language update: what was done, what is next, and anything needed from the client.
Drafts land in a review queue. The engagement manager edits or approves each one. Unapproved drafts never send, and recurring edits inform adjustments to the drafting prompt.
Approved updates go out by email, the send is logged on the client record, and a firm-wide view shows every engagement's stage, outstanding items, and last client contact date.
Engineering notes
Benefits are qualitative by design. We do not publish numbers we cannot verify.
The free audit maps your actual tools and process against this architecture, and tells you honestly what is worth building.