> 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/complexes.md).

# Search complexes in Duaer

In Duaer, search protein complexes via Complex Portal with Duaer Data. One successful search uses 1 credit. This page includes the full English call skill.
## What you get

Complexes in the Duaer data market returns Complex Portal records (accession, organism, members). One successful search uses 1 credit.

Add the node from the [Duaer Data category](/getting-started/duaer-data.md) (Complexes), or copy the skill on the [data market](/getting-started/data-market.md). Related: [Interactions](/getting-started/interactions.md).

## Search on the canvas

1. Open the node creator, select Duaer Data, then Complexes.
2. Words is required (a new node starts with insulin). Complex Portal ids (CPX-) also work.
3. Organism is optional (scientific name or taxonomy id). Limit defaults to 10, max 20. Select Execute step.

A successful search uses 1 credit. Production deliverables land in the [data pool](/getting-started/data-pool.md).

## Call the API

- GET https://api.duaer.com/v1/data/complexes?...
- Authorization: Bearer <Duaer key>
- words is required.

For keys, refer to [Authentication for the Duaer public API](/api/authentication.md). Below is the same English call skill as Copy skill.

## Call skill

Same text as Copy skill on the Duaer data market. Keep it English.

```
---
name: duaer-complexes
description: >-
  Search protein complexes through Duaer via Complex Portal.
  One successful search uses 1 Duaer credit.
---

# Duaer complexes

Search protein complexes through Duaer with a Duaer key (Complex Portal / IntAct).

## Call

`GET https://api.duaer.com/v1/data/complexes?words=insulin&organism=Homo%20sapiens&limit=10`

Header: `Authorization: Bearer <Duaer key>`

Use an account key or a model API key.

`words` is required.

- `words` — words in the complex name or description, or a Complex Portal id (`CPX-4305`).
- `organism` — optional. Keep complexes whose organism contains this text, or an NCBI taxonomy id (`9606`).
- `limit` — optional. From 1 to 20. Default 10.

## Result

Each item has `source`, `title`, `url`, `summary`, `complexAc`, `organism`, `description`, `predicted`, `interactors`, and `interactorCount`.
Related interactions: https://skills.duaer.com/interactions.md.
Related proteins: https://skills.duaer.com/proteins.md.
Related organisms: https://skills.duaer.com/organisms.md.

## Credits

One successful search uses 1 credit.
An empty search, a failed search, a compound that matches nothing, or no remaining credits uses 0.
No remaining credits returns 402 and does not search.
A missing key returns 401.

```
## Questions

### What goes in Organism for Duaer Complexes?

A scientific name such as Homo sapiens, or an NCBI taxonomy id such as 9606.

## Related

- [Search interactions in Duaer](https://doc.duaer.com/getting-started/interactions.md)
- [Search proteins in Duaer](https://doc.duaer.com/getting-started/proteins.md)
- [Search organisms in Duaer](https://doc.duaer.com/getting-started/organisms.md)
- [Use the Duaer data market](https://doc.duaer.com/getting-started/data-market.md)