---
title: "Create or claim a mailbox (Markdown)"
method: POST
path: "/agent/mailboxes/ensure"
---

# Create or claim a mailbox (Markdown)

`POST /agent/mailboxes/ensure`

## Request

- Base URL: `https://fluidrecall.com/api/v1`
- URL: `https://fluidrecall.com/api/v1/agent/mailboxes/ensure`
- Auth: one of:
  - HTTP bearer
  - HTTP dpop

Write. Body { address, displayName? }. Seed Heidi with heidi@fluidrecall.com.

## Request body

- object
  - `address` string, required
  - `displayName` string, nullable

## Response `200`

Mailbox plus created/claimed flags.

## Other responses

- `400`: Invalid JSON or fields.
- `401`: Missing or wrong token.

---

[API](https://skmtc.dev/fluidrecall/apis/fluid-recall.md) · [All operations](https://skmtc.dev/fluidrecall/apis/fluid-recall/llms.txt) · [OpenAPI document](https://skmtc.dev/fluidrecall/apis/fluid-recall/revisions/7bf2563c3d2a?raw)