---
title: "Scholar lookup by DOI or query"
method: POST
path: "/v1/scholar/lookup"
tags: ["scholar"]
---

# Scholar lookup by DOI or query

`POST /v1/scholar/lookup`

## Request

- Base URL: `https://api.hyperresearch.ai`
- URL: `https://api.hyperresearch.ai/v1/scholar/lookup`
- Auth: one of:
  - HTTP bearer
  - API key in cookie `hr_session`

Scholarly metadata for a DOI, or a search when you send `query` instead. Metered: each call past the plan’s monthly scholar allowance is a billable scholar query; the response carries its `usage_event_id`.

## Request body

- ScholarLookupBody
  - `doi` string
  - `query` string
  - `limit` integer

## Response `200`

Lookup result

- ScholarResult
  - `usage_event_id` string, required
  - `data` object, required

## Other responses

- `400`: Invalid request
- `401`: Authentication failed
- `403`: Insufficient scope or plan
- `404`: Not found
- `429`: Rate limited or over quota
- `500`: Internal error

---

[API](https://skmtc.dev/hyperresearch/apis/hyperresearch-cloud-api.md) · [All operations](https://skmtc.dev/hyperresearch/apis/hyperresearch-cloud-api/llms.txt) · [OpenAPI document](https://skmtc.dev/hyperresearch/apis/hyperresearch-cloud-api/revisions/726ef831ebf4?raw)