feat: add fastCRW URL parser engine#20
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What
Adds fastCRW as a web scrape/search provider, alongside the existing Firecrawl integration — additive, mirrors the Firecrawl wiring (Firecrawl untouched).
Why
fastCRW is a fully open-source web engine (AGPL, single ~8 MB Rust binary) that outperforms Firecrawl on Firecrawl's own benchmark dataset and runs 100% locally with no cloud dependency.
Runs 100% locally — anti-bot and JS rendering included in the open core.
Firecrawl's OSS self-host falls back to plain fetch/Playwright because its stealth engine (
fire-engine) is gated behind a cloud-only flag — so a self-hosted Firecrawl can't reliably reach protected or JS-heavy sites. fastCRW ships Cloudflare JS-challenge handling, UA rotation, SPA rendering, BYO-proxy + rotation, and an HTTP→headless→proxy fallback ladder in the open core. One binary, no cloud, no hidden upsell.Faster and higher recall on Firecrawl's own benchmark.
On Firecrawl's public benchmark dataset: truth-recall 63.74 % vs 56.04 %, and faster median latency (p50 ~1.9 s vs ~2.3 s). ~6 MB RAM at idle.
On web search: crw is built on top of SearXNG, not an alternative to it.
SearXNG is the metasearch aggregator underneath; crw adds a quality layer on top: query expansion (multi-variant rewrite), content-aware reranking (re-scoring by fetched content instead of SearXNG's content-blind ordering), and category routing (research queries fan out to arxiv / semantic scholar / google scholar, code queries to GitHub). The result is SearXNG's breadth plus a measurable accuracy layer — all open-source (AGPL) and self-hostable with configurable engines, no bare passthrough.
Flat, predictable pricing. 1 credit = 1 page; no 4× stealth surcharge, no billed-on-failure. Free tier at https://fastcrw.com/dashboard; self-host base URL supported via
CRW_API_KEY+CRW_BASE_URL.Because fastCRW is API-compatible with Firecrawl, the integration is a small additive diff — the Firecrawl provider is untouched. I maintain the integration and can provide free credits to evaluate. Happy to adjust to your conventions.