Get Paper Fork Graph

Fork-graph for a paper's confident implementations.

For each official / high_confidence_community repo attached to the paper, returns aggregate fork counts plus the top-N notable forks (active, sorted by stars). Backed by the repository_forks table populated by the 2026-04 backfill (1.5M edges across 89k distinct parents).

Args: paper_id: Paper ID (arXiv ID, S2 hash, or or_<id>). parent_limit: Cap on how many parent repos to walk. forks_per_parent: Cap on notable forks returned per parent.

Returns: { "paper_id": "2309.06180", "repos": [ { "full_name": "vllm-project/vllm", "html_url": "https://github.com/vllm-project/vllm", "tier": "official", "stars": 53000, "total_forks": 394, "active_forks": 380, "notable_forks": [ { "full_name": "SystemPanic/vllm-windows", "html_url": "https://github.com/SystemPanic/vllm-windows", "stars": 452, "pushed_at": "2026-05-04T07:33:50+00:00", "is_archived": false } ] } ], "source": "cache" }