# Marketplace

Public marketplace for discovering and joining campaigns

## Get marketplace campaigns

 - [GET /marketplace/campaigns](https://docs-staging.varmply.com/openapi/marketplace/getmarketplacecampaigns.md): Retrieve a list of campaigns available in the marketplace with joinability projections for the current user.
This is a read-only endpoint that returns campaigns with their requirements and per-user joinability information.
Supports filtering by platform, objective, currency, and status. Results are paginated using cursor-based pagination.
Requires a valid JWT access token.

## Get marketplace campaign detail

 - [GET /marketplace/campaigns/{campaignId}](https://docs-staging.varmply.com/openapi/marketplace/getmarketplacecampaigndetail.md): Retrieve detailed information about a specific campaign in the marketplace, including joinability projection for the current user.
This is a read-only endpoint that returns campaign details with per-user joinability information.
Requires a valid JWT access token.

## Join a marketplace campaign

 - [POST /marketplace/campaigns/{campaignId}/join](https://docs-staging.varmply.com/openapi/marketplace/joinmarketplacecampaign.md): Allow a creator to join a campaign from the marketplace.
This endpoint uses MarketplaceJoinabilityEvaluator for consistency with GET /marketplace/campaigns/:id.
Returns the created/updated participation with joinability snapshot.
Handles idempotency: joining twice returns the existing participation.
Requires authentication and creator role with verified email.

## Join a campaign (Marketplace)

 - [POST /campaigns/{campaignId}/join](https://docs-staging.varmply.com/openapi/marketplace/attemptjoincampaign.md): Allow a creator to attempt to join a campaign via the marketplace.
This endpoint uses the eligibility evaluator to determine if the creator can participate.
Returns 200 OK with either:
- eligible: true and participation object if eligible
- eligible: false with reasonCode and optional metadata if ineligible
No HTTP 400s for business rules - all outcomes return 200 with structured response.
Requires a valid JWT access token.