Validate campaign draft

Validate the stored editor draft graph for an already-created campaign by campaignId and return blocking errors plus non-blocking warnings. Use this to inspect an existing saved draft, including incomplete or complex internal drafts. This does not validate an arbitrary request payload.

This endpoint validates a campaign that already exists in Enginy. It reconstructs the stored draft graph for the requested campaignId and does not validate a newly submitted campaign payload.

Responses include direct Enginy app URLs when available. Responses include an appUrl that opens the campaign in Enginy. MCP agents should return those URLs to users whenever they are present in the response.

Required scope: CAMPAIGNS_READ

Rate limit: 100 requests per minute