# Claim a domain for an organization

`POST /v1/organization-domains` · permission `organization-domains:write`

Adds a domain to an organization. `domain` may be Unicode or an A-label and is stored as a lower-case A-label. With `dns_txt` (the default) the domain starts `pending`; publish the returned TXT record and the domain is verified by `:verify` or by the scheduled check; a domain not verified within 72 hours becomes `expired`. `manual` records your own statement of ownership: the domain is `verified` at once and the statement is written to the management audit log. Each organization can hold at most 100 domains.

## Request

| Field | Type | Required | Description |
|---|---|---|---|
| `Idempotency-Key` | header | no | Optional key (16-64 characters) that makes a retried request safe. |
| `organization_id` | string | yes | The organization that claims the domain (`org_…`). |
| `domain` | string | yes | Domain name, at most 253 characters. Public suffixes and free email providers cannot be claimed. |
| `verification_method` | string | no | `dns_txt` (default) or `manual`. |

Request body:

```json
{
  "organization_id": "org_01j9xk3m7q8r2s4t6v8w0y2z4a",
  "domain": "acme.com"
}
```

## Response

`201 Created` with the domain and an `ETag` header.

```json
{
  "id": "odm_01j9xk3m7q8r2s4t6v8w0y2z4c",
  "organization_id": "org_01j9xk3m7q8r2s4t6v8w0y2z4a",
  "domain": "acme.com",
  "status": "pending",
  "verification_method": "dns_txt",
  "txt_record_name": "_akp-verify.acme.com",
  "txt_record_value": "idp-verify=EXAMPLEtokenEXAMPLEtokenEXAMPLEtokenEXAMPLEtok",
  "verification_started_at": "2026-10-12T09:30:00.123456Z",
  "verified_at": null,
  "last_checked_at": null,
  "unverified_at": null,
  "next_check_at": "2026-10-12T09:31:00.123456Z",
  "last_failure_code": null,
  "capture_mode": "off",
  "sso_routing_enabled": false,
  "created_at": "2026-10-12T09:30:00.123456Z",
  "updated_at": "2026-10-12T09:30:00.123456Z",
  "version": 1
}
```

## Errors

| HTTP | code | When |
|---|---|---|
| 400 | `unknown_field` | The body has a field that is not in the schema or is read-only. |
| 404 | `not_found` | No organization with this ID exists in this environment. |
| 409 | `conflict` | This organization already has this domain. |
| 409 | `domain_already_verified` | Another organization has already verified this domain. |
| 409 | `domain_limit_reached` | The organization already has 100 domains. |
| 409 | `organization_disabled` | The organization is disabled. |
| 409 | `organization_pending_deletion` | The organization is waiting for self-service deletion; cancel the deletion first. |
| 422 | `domain_not_claimable` | The domain is a public suffix or a free email provider. |
| 422 | `validation_failed` | A field is invalid (`organization_id`, `domain`, `verification_method`). |
| 401 | `unauthenticated` | The credential is missing, invalid or revoked. |
| 403 | `insufficient_permissions` | The credential lacks the required permission. |
| 429 | `rate_limited` | The rate limit was exceeded; retry after the `Retry-After` period. |
| 503 | `service_unavailable` | A dependency is temporarily unavailable; retry after the `Retry-After` period. |

## Example

```bash
curl -X POST https://api.eu.keenauth.com/v1/organization-domains \
  -H "Authorization: Bearer $KEENAUTH_SECRET_KEY" \
  -H "Content-Type: application/json" \
  -d '{"organization_id":"org_01j9xk3m7q8r2s4t6v8w0y2z4a","domain":"acme.com"}'
```