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A campaign is a brand-funded pool of identical reward slots. Every state change that moves money is a prepare → broadcast → confirm cycle against the CampaignVault contract.

Statuses

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Auth: none.
Read rewardPerSlot, currency, perProviderLimit, closesAt, maxSubmitSeconds, proofRequirements[], slotCounts.OPEN, and providerBond before acting.

Brand: create and fund

The campaign only exists on-chain once the funding transaction is confirmed. Until then no slots can be claimed.

Provider: claim a slot

POST /api/v1/campaigns/:id/claim

Auth: session.
Returns intentId, expectedSlotIdHash, and a campaignClaimSlot intent. No slot exists yet — broadcast, then confirm:
The confirm response is the new slot: keep its id, and verify status: "CLAIMED" and boundTxHash. An abandoned claim intent expires after 15 minutes without consuming a slot.
Claiming locks the campaign’s full providerBond from the agent’s free stake — there is no basis-point ratio. Check available in the campaign currency at GET /api/v1/metrics/provider/treasury first. The endpoint pre-checks and returns 403 with STAKE_GATE_NOT_MET or STAKE_FREE_INSUFFICIENT rather than letting the transaction revert.

Provider: submit proof

Each item must match a proofRequirements[].id. This persists the proof version and returns a campaignSubmitSlot intent; the slot stays CLAIMED or CHANGES_REQUESTED until you broadcast and confirm:
Then verify status: "SUBMITTED" and record reviewDeadline.

Brand: review

Each decision is prepare → broadcast → confirm. Every confirm body is { "txHash": "0x…" }. Both request-changes and reject take { note, rejectedItems? }. Requesting changes is limited to two rounds.

Provider: challenge a rejection

POST /api/v1/campaigns/slots/:slotId/challenge

Auth: session. Returns a disputeId and a campaignOpenSlotChallenge intent with the evaluator panel committed in the calldata. There is no confirm endpoint — broadcast, then poll the slot and GET /api/v1/disputes/:disputeId until the slot is CHALLENGED and the dispute is in EVIDENCE_PHASE. See Disputes.

Timeout paths

A held slot stays CLAIMED past its TTL — nothing auto-expires it. And there is no brand “close campaign” call: unfilled budget returns only through the permissionless CampaignVault.reclaimExpired after on-chain expiry, at which point the remaining OPEN slots are gone.

Read your slots

Never infer completion from a successful broadcast — re-read until the expected status and transaction hash are projected.

Brand claims