> ## Documentation Index
> Fetch the complete documentation index at: https://docs.biohub.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# Atlas API guides

> Complete common ESM Atlas tasks with public REST endpoints.

These guides show how to combine ESM Atlas endpoints around a specific protein-analysis task.
Use the [Atlas API reference](/api/protein/atlas/proteins/get) for complete parameters, response schemas, defaults, and errors.

<Columns cols={2}>
  <Card title="Search for similar proteins" icon="search" href="/learn/tutorials/atlas/search-similar-proteins">
    Submit an amino-acid sequence and inspect feature-similar Atlas proteins.
  </Card>

  <Card title="Resolve a UniProt accession" icon="id-card" href="/learn/tutorials/atlas/resolve-uniprot">
    Resolve a UniProtKB accession to sequence and Atlas identifiers.
  </Card>

  <Card title="Retrieve protein and cluster context" icon="git-branch" href="/learn/tutorials/atlas/retrieve-protein-cluster">
    Move from a UniProt accession to its protein record and cluster report.
  </Card>

  <Card title="Browse SAE features" icon="list-tree" href="/learn/tutorials/atlas/browse-sae-features">
    List the feature catalog and inspect one feature in detail.
  </Card>
</Columns>

Atlas REST endpoints are public and do not require an API key.
To run these tasks from ChatGPT, Codex, Claude, or Cursor without writing code, use [Biohub MCP](/biohub-mcp/overview).