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What Is a Feed

A feed is Atria’s core primitive for building event-driven workflows. It listens to a specific type of blockchain data, decides what matters, and emits a structured payload when the feed logic matches.

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Anatomy

  • Source: Network, data type, and optional block range.
  • Filter: Feed logic that decides whether to emit and can shape the payload it returns. In the current runtime, filters are authored in JavaScript.
  • Function: Optional post-filter logic for heavier enrichment, integration-specific formatting, or complex transformation.
  • Outputs: Connectors that use the emitted payload to trigger the next action.
  • Cursor: Stored progress that tells the runtime which block to process next.
  • Metadata: Name, version, tags, description, status, and deployment history.

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Feed Input

Feed input comes from one data type, such as BlockWithTransactions or BlockWithLogs.

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Feed Output

If the feed returns null or undefined, Atria emits no result. If it returns an object, Atria wraps it as feed output data and sends it to configured outputs.