---
title: "Register interest for a sort key"
method: POST
path: "/interests"
---

# Register interest for a sort key

`POST /interests`

## Request body

- Interest — Describes a recon interest range to store and synchronize
  - `sep` string, required — Separator key, typically 'model' (sometimes called sort_key)
  - `sepValue` string, required — Multibase encoded separator value (sometimes called sort_value, typically a stream ID)
  - `controller` string — Decentralized identifier (DID) string
  - `streamId` string — Multibase encoded stream ID.

## Response `204`

success

## Other responses

- `400` — bad request
- `500` — Internal server error

---

[API](https://skmtc.net/ceramicnetwork/apis/ceramic-api.md) · [All operations](https://skmtc.net/ceramicnetwork/apis/ceramic-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/ceramicnetwork/ceramic-api/versions/f6dfb5c90009/schema)