> ## Documentation Index
> Fetch the complete documentation index at: https://docs.useagentbank.com/llms.txt
> Use this file to discover all available pages before exploring further.

# update_recipient

> Register a confirmed replacement for an existing recipient.

**Authentication:** `recipient:write`\
**Mutates state:** Yes\
**Idempotency:** Stable `request_id`\
**Confirmation:** `confirmed_by_user=true`

```json theme={null}
{
  "request_id": "stable retry ID",
  "recipient_id": "recipient_...",
  "fields": {},
  "confirmed_by_user": true
}
```

Core has no in-place recipient update endpoint. This tool registers a
replacement and returns `replaced_recipient_id`; it does not automatically
revoke the old record.