> For the complete documentation index, see [llms.txt](https://doc.duaer.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.duaer.com/getting-started/single-cell-atlas.md).

# Search Single Cell Atlas in Duaer

In Duaer, search single-cell experiments in Single Cell Expression Atlas. One successful search uses 1 credit.
## What you get

Single Cell Atlas in the Duaer data market uses 1 credit per successful search.

Related: [Expression Atlas](/getting-started/expression-atlas.md).

## Search on the canvas

1. Open the node creator, select Duaer Data, then Single Cell Atlas.
2. Enter Words (default lung) or an id.
3. Limit defaults to 10, max 20.

A successful search uses 1 credit.

## Call the API

- GET https://api.duaer.com/v1/data/single-cell-atlas?...
- Authorization: Bearer <Duaer key>

Below is the same English call skill as Copy skill.

## Call skill

Same text as Copy skill.

```
---
name: duaer-single-cell-atlas
description: >-
  Search single-cell experiments in Single Cell Expression Atlas through Duaer.
  One successful search uses 1 Duaer credit.
---

# Duaer Single Cell Atlas

Search single-cell experiments in Single Cell Expression Atlas through Duaer with a Duaer key.

## Call

`GET https://api.duaer.com/v1/data/single-cell-atlas?words=lung&limit=10`

Header: `Authorization: Bearer <Duaer key>`

Use an account key or a model API key.

Provide `words` or `id`.
- `words` — experiment words, such as lung.
- `id` — optional. Accession such as E-HCAD-14.
- `limit` — optional. From 1 to 20. Default 10.

## Result

Each item has `source`, `title`, `url`, `summary`, `accession`, `species`, `experimentType`, and `assayCount`.

```
## Questions

### How many credits does a Single Cell Atlas search use in Duaer?

One successful search uses 1 credit.