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POST
/
v2
/
workflow
/
definitions
/
update
Update Definition
curl --request POST \
  --url https://api.velt.dev/v2/workflow/definitions/update \
  --header 'Content-Type: application/json' \
  --header 'x-velt-api-key: <x-velt-api-key>' \
  --header 'x-velt-auth-token: <x-velt-auth-token>' \
  --data '
{
  "data": {
    "definitionId": "<string>",
    "ifVersion": 123,
    "name": "<string>",
    "description": "<string>",
    "nodes": [
      {}
    ],
    "edges": [
      {}
    ],
    "groups": [
      {}
    ],
    "loops": [
      {}
    ],
    "triggers": [
      {}
    ],
    "tags": [
      "<string>"
    ],
    "custom": {},
    "organizationId": "<string>",
    "documentId": "<string>"
  }
}
'
{
  "result": {
    "definitionId": "marketing-copy-approval",
    "name": "Marketing copy approval (Q2 revision)",
    "description": null,
    "version": 2,
    "scope": { "level": "apiKey", "organizationId": null, "documentId": null },
    "nodes": [],
    "edges": [],
    "groups": [],
    "triggers": null,
    "tags": null,
    "custom": null,
    "createdAt": 1731432000000,
    "updatedAt": 1731518400000,
    "status": "active"
  }
}
Use this API to update an existing workflow definition. Atomically increments the version, snapshots the prior content, and rejects if the stored version mismatches ifVersion. In-flight executions keep running on the version they started with.

​
Endpoint

POST https://api.velt.dev/v2/workflow/definitions/update

​
Headers

​
x-velt-api-key
string
required
Your API key.
​
x-velt-auth-token
string
required
Your Auth Token.

​
Body

​
Params

Accepts every field from Create Definition plus:
​
data
object
required
Every successful update increments version and snapshots the prior content. In-flight executions are immune to updates — they keep running on the pinned definitionVersion from their dispatch.

​
Example Requests

​
Rename a definition

{
  "data": {
    "definitionId": "marketing-copy-approval",
    "ifVersion": 1,
    "name": "Marketing copy approval (Q2 revision)"
  }
}

​
Response

​
Success Response

{
  "result": {
    "definitionId": "marketing-copy-approval",
    "name": "Marketing copy approval (Q2 revision)",
    "description": null,
    "version": 2,
    "scope": { "level": "apiKey", "organizationId": null, "documentId": null },
    "nodes": [ /* current */ ],
    "edges": [ /* current */ ],
    "groups": [ /* current */ ],
    "triggers": null,
    "tags": null,
    "custom": null,
    "createdAt": 1731432000000,
    "updatedAt": 1731518400000,
    "status": "active"
  }
}

​
Failure Response

{
  "error": {
    "message": "ERROR_MESSAGE",
    "status": "FAILED_PRECONDITION"
  }
}
Errors: NOT_FOUND (definition does not exist) / FAILED_PRECONDITION (ifVersion mismatch) / INVALID_ARGUMENT (schema or linter failure). 
{
  "result": {
    "definitionId": "marketing-copy-approval",
    "name": "Marketing copy approval (Q2 revision)",
    "description": null,
    "version": 2,
    "scope": { "level": "apiKey", "organizationId": null, "documentId": null },
    "nodes": [],
    "edges": [],
    "groups": [],
    "triggers": null,
    "tags": null,
    "custom": null,
    "createdAt": 1731432000000,
    "updatedAt": 1731518400000,
    "status": "active"
  }
}