curl -X GET 'https://api.resend.com/inboxes/inbox-id/agent' \
  -H "Authorization: Bearer $RESEND_API_KEY" \
  -H 'User-Agent: my-app/1.0'

# GET /inboxes/{inbox_id}/agent (Resend API)
Base URL: https://api.resend.com
Auth: Authorization: Bearer <RESEND_API_KEY>
Last verified: 2026-10-20

> Retrieve the agent settings for an inbox

## Critical Gotchas
* All requests must include a `User-Agent` header (e.g. `User-Agent: my-app/1.0`) or the API returns HTTP 403.

## cURL
curl -X GET 'https://api.resend.com/inboxes/inbox-id/agent' \
  -H "Authorization: Bearer $RESEND_API_KEY" \
  -H 'User-Agent: my-app/1.0'

## Parameters
| Name | In | Type | Required | Description |
| :--- | :--- | :--- | :--- | :--- |
| inbox_id | path | string | Yes | The Inbox ID or the inbox email address, such as `support... |

## Response (200 OK)
{"object":"inbox_agent","instructions":"Answer refund questions yourself. Escalate legal threats."}

---
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GET

GET /inboxes/{inbox_id}/agent — Resend API

Resend API

Retrieve the agent settings for an inbox

Base URL: https://api.resend.com
Auth: Authorization: Bearer <RESEND_API_KEY>
Last verified: 2026-10-20 · upstream hash matched

Actions Try in browser→

Agents: curl -H "Accept: text/markdown" this URL
→ 160 tokens · Vary: Accept

Critical gotchas

All requests must include a User-Agent header (e.g. User-Agent: my-app/1.0) or the API returns HTTP 403.

cURL

curl -X GET 'https://api.resend.com/inboxes/inbox-id/agent' \  -H "Authorization: Bearer $RESEND_API_KEY" \  -H 'User-Agent: my-app/1.0'

Parameters

Name	In	Type	Required	Description
inbox_id	path	string	Yes	The Inbox ID or the inbox email address, such as `[email protected]`. A value that contains `@` must be a valid email address, and any other value must be a UUID, or the request returns a 422. The address match is case-insensitive and never falls back to the inbox `name`. An address that matches no inbox returns a 404.

Response 200 OK

{
  "object": "inbox_agent",
  "instructions": "Answer refund questions yourself. Escalate legal threats.",
  "tone": "concise_professional",
  "actions": [
    "draft_reply",
    "add_labels"
  ]
}

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