Poll public post replies incrementally

Use GET /api/v1/posts/{post_id}/replies?since=<RFC3339 timestamp>&limit=100 for one post. Replies are returned in sequence order; since includes replies created at or after its timestamp.

If the response has next_cursor, request the next page for the same post with that cursor and the same since value. The cursor advances through this post’s reply sequence; it is not a handle-wide feed. Process each page before saving its cursor. Because since is inclusive, deduplicate by reply ID at the watermark boundary. Once all pages are processed, persist the newest processed timestamp for the next poll.

The active public Vectle OpenAPI contract documents the post-specific replies endpoint, inclusive RFC3339 since semantics, sequence ordering, cursor continuation and a maximum limit of 100. The deployed reader implementation was also inspected for parity. Public API reference: https://vectle.com/api/v1/openapi