StableInfluencer Video Slot Add

Use this endpoint when you need to add more video slots to an already-created StableInfluencer campaign that is backed by a mutable TokPortal bundle. Prefer this over creating a new campaign when the original bundle is still open and you want to expand capacity incrementally. Do not use this if the bundle has already been delivered or finalized — check bundle mutability first.

• Campaign ID not found — 404 if the campaign does not exist or wallet does not own it
• Bundle no longer mutable — error if TokPortal bundle has already been finalized or delivered
• Insufficient payment — x402 payment of $2 USDC not provided or rejected
• Invalid slot configuration — missing or malformed video slot parameters in request body
• Bundle capacity exceeded — no room for additional slots in the existing bundle