---
id: workflow-revision-read
title: Read a revision
description: Returns one revision with its full definition.
sidebar_label: Read a revision
hide_title: true
hide_table_of_contents: true
api: >-
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sidebar_class_name: get api-method
info_path: docs/api/nullplatform-api
custom_edit_url: null
canonical: 'https://docs.nullplatform.com/docs/api/workflow-revision-read'
---
<Heading
  as={"h1"}
  className={"openapi__heading"}
  children={"Read a revision"}
>
</Heading>

<MethodEndpoint
  method={"get"}
  path={"/workflows/definitions/{id}/revisions/{revision}"}
  context={"endpoint"}
>

</MethodEndpoint>

Returns one revision with its full definition.

<Heading
  id={"request"}
  as={"h2"}
  className={"openapi-tabs__heading"}
  children={"Request"}
>
</Heading>

<ParamsDetails
  parameters={[{"in":"path","name":"id","required":true,"schema":{"type":"string"},"description":"Workflow reference: a server-minted id (`wf_...`) or the workflow's client-chosen key (lowercase slug, unique per organization).","example":"wf_ifWBbWfpug0n"},{"in":"path","name":"revision","required":true,"schema":{"type":"integer"},"description":"The revision number (positive integer).","example":3}]}
>

</ParamsDetails>

<RequestSchema
  title={"Body"}
  body={undefined}
>

</RequestSchema>

<StatusCodes
  id={undefined}
  label={undefined}
  responses={{"200":{"description":"The revision.","content":{"application/json":{"schema":{"title":"Revision","type":"object","required":["workflowId","revision","createdAt"],"properties":{"workflowId":{"type":"string","example":"wf_ifWBbWfpug0n"},"revision":{"type":"integer","description":"Revision number, starting at 1.","example":3},"definition":{"type":"object","nullable":true,"description":"The full definition. `null` in list responses unless `includeDefinition=true`."},"createdAt":{"type":"string","format":"date-time"},"createdBy":{"type":"string"},"releaseNotes":{"type":"string"},"semanticVersion":{"type":"string"}}}}}},"4XX":{"description":"Client error. The body says what went wrong: an error `type`, a human-readable `detail`, and, on validation failures, one entry per offending field.","content":{"application/problem+json":{"schema":{"title":"Problem","type":"object","description":"The standard error body (RFC 7807 problem details, served as `application/problem+json`).","properties":{"type":{"type":"string","description":"Error type URI, e.g. `https://workflow-system.dev/errors/workflow-not-found`.","example":"https://workflow-system.dev/errors/workflow-not-found"},"title":{"type":"string","example":"Not found"},"status":{"type":"integer","example":404},"detail":{"type":"string","example":"No workflow with id wf_ifWBbWfpug0n exists"},"instance":{"type":"string","example":"/workflows/definitions/wf_ifWBbWfpug0n"},"errors":{"type":"array","description":"Present on validation failures: one entry per offending field.","items":{"type":"object","properties":{"path":{"type":"string","example":"/steps/scan/config"},"message":{"type":"string","example":"must have required property 'code'"}}}}}}}}},"5XX":{"description":"Unexpected server error.","content":{"application/problem+json":{"schema":{"title":"Problem","type":"object","description":"The standard error body (RFC 7807 problem details, served as `application/problem+json`).","properties":{"type":{"type":"string","description":"Error type URI, e.g. `https://workflow-system.dev/errors/workflow-not-found`.","example":"https://workflow-system.dev/errors/workflow-not-found"},"title":{"type":"string","example":"Not found"},"status":{"type":"integer","example":404},"detail":{"type":"string","example":"No workflow with id wf_ifWBbWfpug0n exists"},"instance":{"type":"string","example":"/workflows/definitions/wf_ifWBbWfpug0n"},"errors":{"type":"array","description":"Present on validation failures: one entry per offending field.","items":{"type":"object","properties":{"path":{"type":"string","example":"/steps/scan/config"},"message":{"type":"string","example":"must have required property 'code'"}}}}}}}}}}}
>

</StatusCodes>