fastCRW Research

Find EVERY arXiv paper that answers a research query. Recall = union of arXiv ids; extra ids never hurt, so cast wide but on-topic. The Research API is a live, drop-in Firecrawl-research-compatible surface — your job is query strategy + intent routing, the endpoints do the retrieval.

This skill reaches 61.0% recall on the 191-question ArXivQA benchmark, a number fastCRW measured directly. Firecrawl publishes 53.3% for its own Research Index on the same benchmark in their Research Index launch post (2026-06-17): "On arXivQA, the index hits 53.3% recall at $0.32 per task, against 45.4% for the next best provider."

Set FASTCRW_API_KEY (a crw_live_… key from https://fastcrw.com/dashboard). Base URL https://api.fastcrw.com. Every endpoint is a GET; pull arXiv ids out of results[].ids.arxiv / results[].primaryId.