# reorder_chapter

Move a chapter between two neighbours.

`PUT /v1/chapters/{collectionId}/position` · MCP tool `reorder_chapter` · scope `write` · stable · since 2026-09-17

Place the chapter after previousId and before nextId (either may be omitted for the ends).

## Path parameters

- `collectionId` (string, required): Id of the chapter to move.

## Body parameters

- `nextId` (string, optional): Id of the chapter that should follow it.
- `previousId` (string, optional): Id of the chapter that should precede it.

## Returns

200.

- `ok` (boolean, required): Always true: the write went through. Always `true`.
- `collectionId` (string, required): The chapter's or collection's id.

## Examples

### Move Top picks between the introduction and Yellowstone

```bash
curl -X PUT "https://sceniq.earth/api/v1/chapters/kn7a2s4d6f8g0h2j4k6k8z0x2c4v6b8n/position" \
  -H "Authorization: Bearer $SCENIQ_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
  "previousId": "kn7q65ntqkryzm6y45h5dyxqt0p454y8",
  "nextId": "kn7e5r9t3y7v1j5p9p3a7s1d5f9g3h7j"
}'
```

MCP `tools/call`:

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "reorder_chapter",
    "arguments": {
      "collectionId": "kn7a2s4d6f8g0h2j4k6k8z0x2c4v6b8n",
      "previousId": "kn7q65ntqkryzm6y45h5dyxqt0p454y8",
      "nextId": "kn7e5r9t3y7v1j5p9p3a7s1d5f9g3h7j"
    }
  }
}
```

Response 200:

```json
{
  "ok": true,
  "collectionId": "kn7a2s4d6f8g0h2j4k6k8z0x2c4v6b8n"
}
```

## Errors

- `invalid_argument` (400): A required field is missing, a field is unknown, or a value does not match its type (the Convex validator's path and value are in the message).
- `invalid_request` (400): A writer refused a value: a map link on a host that is not allowed, a title that is too long, a date that does not exist, too many items in a list. The message is the writer's own sentence.
- `unauthenticated` (401): The request carries no key. Send it as Authorization: Bearer sk_sceniq_... (or X-Api-Key).
- `invalid_api_key` (401): The key is unknown, revoked or expired.
- `api_scope_required` (403): A read-only key called a write operation, or a key without the publish option called publish_changes.
- `forbidden` (403): The key belongs to a creator account that is no longer active.
- `not_found` (404): The id does not exist or belongs to another creator. The two answers are identical on purpose, so ids never reveal what exists.
- `payload_too_large` (413): A JSON body over 2 MB, an image over 6 MB, a batch upload over 19 MB, or an MCP message over 2 MB.
- `rate_limited` (429): Over a limit: requests per key per minute, per creator per hour, uploads per key per minute, or check_links per guide per hour.
- `internal_error` (500): An unexpected failure. The message is hidden on purpose.

Reference: https://developers.sceniq.earth/reference/reorder_chapter