# Tone calibration

A reusable skill the "Collect what's overdue, keep the relationship" recipe pulls in. Add it once and every agent on the team can use it.

Draft the collections email in the tone that matches the invoice's
rung, never escalating faster than the days overdue justify.

## Method
1. Read the tone definition for the assigned rung from memory.
2. Draft the email body using only that rung's approved language.
3. Check the draft doesn't borrow language from a later rung (no
   "final notice" wording on a reminder).
4. Include invoice-specific facts: account name, amount, days overdue.
5. Attach the draft to the approval queue instead of sending it.

## Rules
- Never use a tone harsher than the rung assigned.
- Never send a collections email without explicit approval — every
  draft waits in the queue.
- Tone definitions per rung (set on first run, then stored in memory).
- Never threaten legal or credit action unless the rung's tone
  explicitly allows it.

## Output
A drafted email per invoice: `{invoice_id, rung, tone, subject,
body}`, queued to `{{approval_channel}}` for one-tap approval.