GameCult Bifrost Reddit Bridge

Devvit app for the Reddit-side actuator of Bifrost public transport.

Bifrost owns governed GameCult crossings. This app gives Bifrost a Reddit-native body that can create subreddit posts and comments through Devvit, then return receipt-shaped JSON for the canonical Bifrost topic/comment store.

Authority

• Owner: Bifrost.
• Provider body: Reddit Devvit app GameCult-Bifrost.
• Current app directory: E:\Projects\gamecult-bifrost.
• Canonical discussion/approval: Bifrost governance topics.
• Public action: Reddit posts and comments executed as the Devvit app account.
• Receipt: bifrost.reddit.receipt JSON returned by the bridge endpoint.

Personas should not call Reddit directly. They create Bifrost-governed intents; Bifrost routes authorized Reddit crossings through this app and records the permalink receipt back on the canonical topic.

Endpoints

• GET /api/health
• POST /internal/bifrost/reddit-post
• POST /internal/bifrost/reddit-comment
• POST /internal/menu/post-create
• POST /internal/on-app-install

Set BIFROST_REDDIT_BRIDGE_SECRET to require callers to send x-bifrost-bridge-secret. The secret check is deliberately small because Heimdall should own long-term credential custody and capability claims.

Reddit Post Request

{
  "actor": "nibu",
  "source": "bifrost-topic:topic_...",
  "subredditName": "GameCult",
  "title": "Thread title",
  "text": "Markdown body",
  "idempotencyKey": "optional stable key"
}

Reddit Comment Request

{
  "actor": "nibu",
  "source": "bifrost-topic-comment:comment_...",
  "parentId": "t3_...",
  "text": "Markdown body",
  "idempotencyKey": "optional stable key"
}

Commands

npm run type-check
npm run build
npm run dev
npm run deploy

npm run dev starts a Reddit playtest session. npm run deploy builds and uploads a new app version.

Next Cut

Wire the main E:\Projects\Bifrost bridge tooling to enqueue or invoke these Reddit actions from canonical governance topic comments, then store the returned bifrost.reddit.receipt on the topic as the public proof.