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docs(claude-md): document search, map, and perf; refresh stale details
Bring core/CLAUDE.md current with the slices rescued this cycle, and fold in earlier /init corrections that were never committed. New capabilities documented: - search: webclaw-fetch `search.rs` (Serper BYO-key) + the CLI `search` subcommand + the OSS `POST /v1/search` route (gated on SERPER_API_KEY) + the now-local-first MCP `search` tool. - map: webclaw-fetch `map.rs` (`discover_urls`/`MapOptions`, sitemap + bounded crawl fallback), gzip sitemap support, and the new `--map-pages`/`--no-map-crawl`/`--map-limit` CLI flags. - perf: shared `extractors/og.rs` parser and the QuickJS runtime gate / parsed-document reuse noted on `js_eval.rs`. Corrections folded in: real browser fingerprint versions live in tls.rs (not browser.rs), accurate module/route lists, Repo Layout section, and removal of the now-false "search lives only in production" notes. Bumped the stated workspace version to 0.6.13. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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CLAUDE.md
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CLAUDE.md
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@ -15,6 +15,7 @@ webclaw/
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# + proxy pool rotation (per-request)
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# + PDF content-type detection
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# + document parsing (DOCX, XLSX, CSV)
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# + layered URL discovery (map) + Serper web search (BYO key)
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webclaw-llm/ # LLM provider chain (Ollama -> OpenAI -> Anthropic)
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# + JSON schema extraction, prompt extraction, summarization
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webclaw-pdf/ # PDF text extraction via pdf-extract
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@ -30,25 +31,34 @@ Three binaries: `webclaw` (CLI), `webclaw-mcp` (MCP server), `webclaw-server` (R
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- `extractor.rs` — Readability-style scoring: text density, semantic tags, link density penalty
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- `noise.rs` — Shared noise filter: tags, ARIA roles, class/ID patterns. Tailwind-safe.
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- `data_island.rs` — JSON data island extraction for React SPAs, Next.js, Contentful CMS
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- `structured_data.rs` — JSON-LD, Next.js `__NEXT_DATA__`, and SvelteKit data-island extraction
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- `js_eval.rs` — QuickJS sandbox (rquickjs) that runs inline `<script>` tags to recover JS-assigned blobs (`window.__PRELOADED_STATE__`, Next.js `self.__next_f`) the static path can't see. Behind the default `quickjs` feature, gated `cfg(not(target_arch = "wasm32"))` — rquickjs links a C lib and won't build for wasm. Never ungate it (see Hard Rules). Runtime-gated for speed: the VM is skipped entirely when the page has no JS-candidate markers (`has_js_candidate_data`), and it reuses the already-parsed document instead of re-parsing.
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- `endpoints.rs` — API surface discovery: REST paths, GraphQL, and WebSocket endpoints mined from inline scripts + JS bundle text (regex over string literals, DoS-bounded). Pure: caller passes raw text.
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- `markdown.rs` — HTML to markdown with URL resolution, asset collection
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- `llm.rs` — 9-step LLM optimization pipeline (image strip, emphasis strip, link dedup, stat merge, whitespace collapse)
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- `llm/` — directory module (`mod` + `body`/`cleanup`/`images`/`links`/`metadata`): 9-step LLM optimization pipeline (image strip, emphasis strip, link dedup, stat merge, whitespace collapse)
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- `domain.rs` — Domain detection from URL patterns + DOM heuristics
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- `metadata.rs` — OG, Twitter Card, standard meta tag extraction
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- `types.rs` — Core data structures (ExtractionResult, Metadata, Content)
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- `filter.rs` — CSS selector include/exclude filtering (ExtractionOptions)
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- `types.rs` — Core data structures (ExtractionResult, Metadata, Content, plus ExtractionOptions for include/exclude CSS selectors — applied in `extractor.rs`; there is no `filter.rs`)
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- `diff.rs` — Content change tracking engine (snapshot diffing)
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- `brand.rs` — Brand identity extraction from DOM structure and CSS
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- `reddit.rs` — old.reddit.com thread vertical extractor (parses server-rendered HTML directly; no JS/API key). Test fixtures under `testdata/reddit/*.html` are `exclude`d from the published crate (Cargo.toml).
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- `youtube.rs` — `ytInitialPlayerResponse` parser, structured markdown for `youtube.com/watch` URLs (title, channel, views, published, duration, description). Produces the legacy markdown shape — for transcripts and a structured `YoutubeData` block see the production server's `youtube_transcript.rs` short-circuit (yt-dlp via proxy pool).
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### Fetch Modules (`webclaw-fetch`)
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- `client.rs` — FetchClient with wreq BoringSSL TLS impersonation; implements the public `Fetcher` trait so callers (including server adapters) can swap in alternative implementations
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- `browser.rs` — Browser profiles: Chrome (142/136/133/131), Firefox (144/135/133/128)
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- `client.rs` — `FetchClient` with wreq BoringSSL TLS impersonation; also implements batch (`BatchResult`/`BatchExtractResult` — there is no `batch.rs`). Implements the public `Fetcher` trait so callers (incl. server adapters) can swap implementations.
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- `fetcher.rs` — the public `Fetcher` trait (`Send + Sync`). Vertical extractors take `&dyn Fetcher`, not `&FetchClient`.
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- `browser.rs` — `BrowserProfile`/`BrowserVariant` enums only (Chrome, ChromeMacos, Firefox, Safari, SafariIos26, Edge). No version numbers live here.
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- `tls.rs` — the real fingerprint builder: per-variant wreq `Emulation` (cipher/sigalg/curve lists, TLS extension order, HTTP/2 SETTINGS, header wire-order). Browser versions are set HERE: Chrome 145, Firefox 135, Edge 145, Safari 18.3.1, Safari iOS 26. SafariIos26 composes on top of `wreq_util::Profile::SafariIos26`. SSRF-safe redirect policy lives here too.
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- `extractors/` — ~28 vertical site extractors (Amazon, eBay, GitHub, Instagram, LinkedIn, Reddit, YouTube, npm, PyPI, HuggingFace, ...); `extractors/mod.rs` is the dispatch table. All reach the network through `&dyn Fetcher`. `extractors/og.rs` is the shared single-pass Open Graph (`og:*`) meta parser the verticals use (`raw()` vs `unescaped()`).
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- `crawler.rs` — BFS same-origin crawler with configurable depth/concurrency/delay
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- `sitemap.rs` — Sitemap discovery and parsing (sitemap.xml, robots.txt)
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- `batch.rs` — Multi-URL concurrent extraction
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- `sitemap.rs` — Sitemap discovery and parsing (sitemap.xml, robots.txt; gzip `.xml.gz` supported via `decode_sitemap_body`, sitemap-index recursion)
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- `map.rs` — layered URL discovery (`discover_urls` / `MapOptions`): sitemaps first, then a bounded same-origin crawl fallback when the sitemap is thin, harvesting links from fetched pages + the unfetched frontier (deduped against the sitemap set)
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- `search.rs` — web search via Serper.dev with the caller's own key (`search` / `SearchOptions` / `SearchResult`; pure `parse_serper_organic`). Plain wreq client (JSON API, no fingerprinting); optional bounded concurrent fetch+extract of result pages. Powers the CLI `search` subcommand, the MCP `search` tool, and the OSS server `POST /v1/search`.
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- `proxy.rs` — Proxy pool with per-request rotation
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- `document.rs` — Document parsing: DOCX, XLSX, CSV auto-detection and extraction
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- `search.rs` — Web search via Serper.dev with parallel result scraping
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- `cloud.rs` — `CloudClient` for hosted antibot escalation, exposed via `Fetcher::cloud()`
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- `locale.rs` — Accept-Language by TLD (`accept_language_for_tld` / `_for_url`)
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- `url_security.rs` — SSRF guards + SSRF-safe redirect policy
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### LLM Modules (`webclaw-llm`)
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- Provider chain: Ollama (local-first) -> OpenAI -> Anthropic
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@ -59,26 +69,31 @@ Three binaries: `webclaw` (CLI), `webclaw-mcp` (MCP server), `webclaw-server` (R
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### MCP Server (`webclaw-mcp`)
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- Model Context Protocol server over stdio transport
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- 8 tools: scrape, crawl, map, batch, extract, summarize, diff, brand
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- 12 tools: scrape, crawl, map, batch, extract, summarize, diff, brand, research, search, list_extractors, vertical_scrape. `search` is local-first via the caller's `SERPER_API_KEY` (falls back to the hosted API when unset); `research` uses the hosted deep-research API. The rest run locally.
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- Works with Claude Desktop, Claude Code, and any MCP client
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- Uses `rmcp` crate (official Rust MCP SDK)
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### REST API Server (`webclaw-server`)
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- Axum 0.8, stateless, no database, no job queue
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- 8 POST routes + /health, JSON shapes mirror api.webclaw.io where the
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capability exists in OSS
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- 10 POST routes (incl. `POST /v1/scrape/{vertical}` and `POST /v1/search`) +
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`GET /v1/extractors` + `GET /health`. JSON shapes mirror api.webclaw.io
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where the capability exists in OSS. The vertical surface
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(`routes/structured.rs`) mirrors the MCP `list_extractors` /
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`vertical_scrape` tools. `POST /v1/search` is gated on `SERPER_API_KEY`
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(returns 501 when unset).
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- Constant-time bearer-token auth via `subtle::ConstantTimeEq` when
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`--api-key` / `WEBCLAW_API_KEY` is set; otherwise open mode
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- Hard caps: crawl ≤ 500 pages, batch ≤ 100 URLs, 20 concurrent
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- Does NOT include: anti-bot bypass, JS rendering, async jobs,
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multi-tenant auth, billing, proxy rotation, search/research/watch/
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multi-tenant auth, billing, proxy rotation, research/watch/
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agent-scrape. Those live behind api.webclaw.io and are closed-source.
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(Web search IS available here as a bring-your-own-Serper-key path.)
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## Hard Rules
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- **Core has ZERO network dependencies** — takes `&str` HTML, returns structured output. Keep it WASM-compatible.
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- **webclaw-fetch uses wreq 6.x** (BoringSSL). No `[patch.crates-io]` forks needed; wreq handles TLS internally.
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- **No special RUSTFLAGS** — `.cargo/config.toml` is currently empty of build flags. Don't add any.
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- **Core has ZERO network dependencies** — takes `&str` HTML, returns structured output. Keep it WASM-compatible. The `quickjs` feature (default ON) pulls in rquickjs, which links a C lib and can't target wasm32; it's gated `cfg(not(target_arch = "wasm32"))` in `lib.rs`. CI compiles webclaw-core for wasm32 both with AND without default features — never ungate that.
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- **webclaw-fetch pins wreq exactly**: `wreq = "=6.0.0-rc.29"` + `wreq-util = "=3.0.0-rc.12"` (BoringSSL). The `=` pin is deliberate — these are release candidates with no semver stability between rc.N builds. No `[patch.crates-io]` forks needed; wreq handles TLS internally.
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- **No build flags in `.cargo/config.toml`** (it is comments-only) — don't add any locally. BUT CI (`.github/workflows/ci.yml`, `deps.yml`) DOES export `RUSTFLAGS: "--cfg reqwest_unstable"` for the wreq path; don't remove it from CI.
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- **webclaw-llm uses plain reqwest**. LLM APIs don't need TLS fingerprinting, so no wreq dep.
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- **Vertical extractors take `&dyn Fetcher`**, not `&FetchClient`. This lets the production server plug in a `ProductionFetcher` that adds domain_hints routing and antibot escalation on top of the same wreq client.
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- **qwen3 thinking tags** (`<think>`) are stripped at both provider and consumer levels.
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@ -86,12 +101,28 @@ Three binaries: `webclaw` (CLI), `webclaw-mcp` (MCP server), `webclaw-server` (R
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## Build & Test
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```bash
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cargo build --release # Both binaries
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cargo build --release # All three binaries (webclaw, webclaw-mcp, webclaw-server)
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cargo test --workspace # All tests
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cargo test -p webclaw-core # Core only
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cargo test -p webclaw-llm # LLM only
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```
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CI (`.github/workflows/ci.yml`, with `RUSTFLAGS=--cfg reqwest_unstable`) runs four jobs — match them locally before pushing:
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- `cargo test --workspace`
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- `cargo fmt --check --all` + `cargo clippy --all -- -D warnings` (warnings fail CI)
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- `cargo check --target wasm32-unknown-unknown -p webclaw-core` **with and without** `--no-default-features` (guards the WASM-safe rule)
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- `cargo doc --no-deps --workspace`
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## Repo Layout & Packaging
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Workspace is version **0.6.13**, edition **2024**, license **AGPL-3.0** (matters for the public-OSS scrubbing rules). No crate declares `rust-version`, so MSRV is implicit — edition 2024 floors it at Rust 1.85+; CI pins `dtolnay/rust-toolchain@stable`.
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Artifacts outside `crates/` that need separate attention:
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- `packages/create-webclaw/` — `npx create-webclaw` Node scaffolder that installs/configures the MCP server for AI agents (Claude, Cursor, Windsurf, ...). Versioned independently (own `package.json`) — bump it separately when MCP setup changes.
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- `smithery.yaml` + `glama.json` — MCP-registry manifests (Smithery stdio config spawning `webclaw-mcp` with optional `WEBCLAW_API_KEY`; Glama). Update when the MCP launch command or env changes.
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- `examples/` — runnable demos (cloudflare-diagnostics, firecrawl-compatible-api, html-to-markdown-rag, mcp-web-scraping, proxy-backed-crawling).
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- `Dockerfile` / `Dockerfile.ci` / `docker-compose.yml`, `benchmarks/` (`/benchmark` skill), `SKILL.md` + `skill/` (Claude Code skill).
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## CLI
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```bash
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@ -107,12 +138,18 @@ webclaw https://example.com --only-main-content
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webclaw url1 url2 url3 --proxy-file proxies.txt
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webclaw --urls-file urls.txt --concurrency 10
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# Sitemap discovery
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# URL discovery (--map): sitemaps first, bounded crawl fallback when the sitemap is thin
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webclaw https://docs.example.com --map
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webclaw https://news.ycombinator.com --map --map-pages 150 --map-limit 500
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webclaw https://docs.example.com --map --no-map-crawl # sitemap-only (no crawl fallback)
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# Crawling (with sitemap seeding)
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webclaw https://docs.example.com --crawl --depth 2 --max-pages 50 --sitemap
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# Web search via Serper.dev (bring your own key: --serper-key or SERPER_API_KEY)
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webclaw search "rust async runtime" --num 5
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webclaw search "best web scraper" --scrape -f json # also fetch + extract result pages
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# Change tracking
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webclaw https://example.com -f json > snap.json
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webclaw https://example.com --diff-with snap.json
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@ -140,8 +177,8 @@ cat page.html | webclaw --stdin
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- Scoring minimum: 50 chars text length
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- Semantic bonus: +50 for `<article>`/`<main>`, +25 for content class/ID
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- Link density: >50% = 0.1x score, >30% = 0.5x
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- Data island fallback triggers when DOM word count < 30
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- Link density (generic divs): >50% = 0.1x score, >30% = 0.5x. Semantic nodes (article/main/role=main) get a milder curve: >70% = 0.3x, >50% = 0.5x (`extractor.rs`)
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- Data island fallback triggers when DOM word count < 500 (`SPARSE_THRESHOLD` in `data_island.rs`)
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- Eyebrow text max: 80 chars
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## MCP Setup
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