google-surf-mcp

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npm version npm downloads ci MCP Toplist google-surf-mcp MCP server

demo

Demo only. Actual searches run headless by default (no visible browser). Set SURF_HEADLESS=false to make Chrome visible like in the clip above.

Google search MCP. Browser mode needs no API key. SearchApi is optional.

One MCP replaces three: search + URL fetcher + academic-paper extractor.

  • ✅ Actually works (tested 6 free Google search MCPs, all failed)
  • ✅ Search + URL + academic PDF extract in one MCP (replaces the search MCP + fetch MCP + academic-search MCP combo)
  • ✅ Academic PDFs extracted inline: arxiv, biorxiv, Nature, OpenReview, NeurIPS, JMLR, PMLR, Springer, PubMed (via PMC)
  • search_extract defaults to abstract mode (~1500 chars/result, token-cheap), mode="full" for whole bodies
  • ✅ Sponsored ads + knowledge panels dropped (geometric verification, not just text matching)
  • ✅ CAPTCHA recovery in 4 modes: OS notification (default) / SURF_HEADLESS=false / SURF_REMOTE_DEBUG / SURF_CLOUD_MODE (fail-fast)
  • ✅ Browser mode needs no API key, proxy, or solver

6 tools: search / scholar_search / search_parallel / extract / search_extract / health

What

Plug it into any MCP client and you get Google search as a tool.

No CAPTCHA solver. When CAPTCHA fires on any tool, a Chrome window opens for a human to solve. Each solve preserves the profile's reputation with Google.

First call auto-bootstraps the warm profile. Designed for local use. For headless / serverless environments set SURF_CLOUD_MODE=true (fail-fast on CAPTCHA, worker pool disabled).

Numbers

result
sequential ~1.5s/query (first call ~4s, includes setup)
parallel x4 ~1.5s wall (first call ~9s, includes pool warm)
parallel x10 ~4.5s wall
search_extract x5 (abstract, default) ~3s wall
search_extract x5 (full) ~5s wall (search + 5 parallel extracts)

Measured on a workstation with a 1Gb/s connection.

Stack

  • Playwright + persistent Chrome profile
  • playwright-extra stealth as a cascade fallback tier
  • Multi-strategy SERP parser + geometric verification (drops sponsored / knowledge_panel / related)
  • @llamaindex/liteparse for PDF text extraction (PDFium spatial parsing, optional OCR); Mozilla Readability + Turndown for HTML
  • Resource-blocked images / media / fonts for speed
  • Auto-bootstrap on first call; pool falls back to single-context after repeated warm failures
  • Self-healing: runtime parser-strategy reorder (deterministic) + daily cron repair PR (synthesis → optional LLM → triple-gate validation, human review)

Install

Requires Node 18+. Browser mode also requires Google Chrome or Chromium.

npx google-surf-mcp   # actual MCP - register in client config

First tool call auto-bootstraps the warm profile (you may see Chrome open briefly).

Or local clone:

git clone https://github.com/HarimxChoi/google-surf-mcp
cd google-surf-mcp
npm install

If auto-bootstrap fails (rare), run it manually:

npm run bootstrap

Override paths if needed:

CHROME_PATH=/path/to/chrome SURF_TZ=America/New_York npm run bootstrap

Use with Claude Code

Paste this into your ~/.claude.json:

{
  "mcpServers": {
    "google-surf": {
      "command": "npx",
      "args": ["-y", "google-surf-mcp"]
    }
  }
}

Restart Claude Code. Done. search, scholar_search, search_parallel, extract, search_extract, health are now available.

For other MCP clients, use the same JSON shape in their config file.

Search providers

Browser search remains the default. SearchApi can be selected as the primary provider or used only when browser search fails.

value behavior
browser Default. Uses the existing Google Surf browser path and does not require SEARCH_API.
searchapi Uses SearchApi as the primary provider and does not initialize Chrome for that tool.
fallback Uses the browser first, then SearchApi on browser errors, CAPTCHA/rate limits, profile failure, or parser degradation. Successful and normal empty browser responses are not repeated.

SURF_SEARCH_PROVIDER controls search and search_parallel. SURF_SCHOLAR_PROVIDER controls scholar_search. SearchApi modes require your own SearchApi account, key, and available credits.

{
  "mcpServers": {
    "google-surf": {
      "command": "npx",
      "args": ["-y", "google-surf-mcp"],
      "env": {
        "SEARCH_API": "your-searchapi-key",
        "SURF_SEARCH_PROVIDER": "fallback",
        "SURF_SCHOLAR_PROVIDER": "searchapi"
      }
    }
  }
}

Local clone variant:

{
  "mcpServers": {
    "google-surf": {
      "command": "node",
      "args": ["/abs/path/to/google-surf-mcp/build/index.js"]
    }
  }
}

Tools

  • search(query, limit?) - single query, ~1.5s in browser mode. Returns title / url / snippet. Sponsored ads + knowledge-panel dropped on the browser path. Results cached 24h (SURF_CACHE_TTL_SEARCH_MS=0 to bypass).
  • scholar_search(query, limit?) - Google Scholar search, max 10 papers. Returns authors, publication, year, snippet, citation count, related/version links, and an available full-text link. Supports browser, SearchApi primary, and fallback modes.
  • search_parallel(queries[], limit?) - pool of 4 in browser mode, max 10 queries per call. Follows SURF_SEARCH_PROVIDER.
  • extract(url, max_chars?, mode?) - fetch a URL, return article content.
    • mode="full" (default): whole body. HTML via Readability, PDFs via liteparse (spatial parsing, multi-column reading order).
    • mode="abstract": ~1500-char survey (PDF page 1 or HTML meta description). Triage relevance before paying for full text.
    • mode="metadata": PDF page count only.
    • Response: content, title, excerpt, length, is_pdf, page_count, extraction_quality. Failures return { error }, never throw.
  • search_extract(query, limit?, max_chars?, mode?) - search + parallel extract in one call. Default mode="abstract" returns SERP enriched with ~1500-char summaries (cheap triage). Use mode="full" when you actually need the article texts (slower, more tokens).
  • health() - server status. Response: cascade / pool (warmFailures + fallback) / rateLimiter / cache / telemetry / selfHealing (current strategy order + stats) / config. Call it if searches start failing — pool.fallback=true or rising cascade.totalCaptchas are the usual culprits.

Env vars

var default notes
SEARCH_API unset SearchApi API key. Required only when either provider setting is searchapi or fallback. Sent as a bearer token and never placed in the request URL.
SEARCHAPI_API_KEY unset Alias for SEARCH_API.
SURF_SEARCH_PROVIDER browser Provider for search and search_parallel: browser, searchapi, or fallback.
SURF_SCHOLAR_PROVIDER browser Provider for scholar_search: browser, searchapi, or fallback.
CHROME_PATH auto-detected absolute path to Chrome binary
SURF_PROFILE_ROOT ~/.google-surf-mcp where the warm profile lives
SURF_LOCALE en-US browser locale
SURF_TZ system tz e.g. America/New_York
SURF_HEADLESS true set false to run Chrome visibly (demos / debugging). When false, CAPTCHA recovery skips the OS notification (user is already watching).
SURF_REMOTE_DEBUG false set true on a headless server with remote DevTools. CAPTCHA path emits the DevTools port and throws instead of spawning a window; attach chrome://inspect from a local machine over SSH port-forward to solve.
SURF_IDLE_CLOSE_MS 30000 idle ms before closing the sequential ctx and pool. 0 disables idle auto-close. Lower = faster cleanup, higher = warmer cache for spaced-out calls.
SURF_ALLOW_PRIVATE false set true to allow extract to fetch private/loopback addresses (localhost, 127.0.0.1, 10.x, 192.168.x, 169.254.x, etc). Default blocks them as an SSRF guard.
SURF_EXTRACT_MAX_CHARS 8000 default extract truncation (200–50000); per-call max_chars still overrides
SURF_EXTRACT_OCR false OCR scanned/image PDFs via Tesseract (slower; off by default)
SURF_CLOUD_MODE false headless/serverless mode: TLS bypass + --no-sandbox + --disable-dev-shm-usage + worker pool disabled + fail-fast on CAPTCHA
SURF_CASCADE_DISABLED false pin a single stealth mode (chosen by SURF_USE_STEALTH) instead of the 3-tier auto-cascade
SURF_USE_STEALTH true initial stealth tier — only consulted when SURF_CASCADE_DISABLED=true
SURF_HUMANLIKE_MODE background off / background (fire-and-forget after returning results) / inline (await before returning, slower)
SURF_RATE_LIMIT_PER_MIN 10 internal cap on Google-facing requests per minute
SURF_CACHE_TTL_SEARCH_MS 86400000 search cache TTL (24h); 0 disables caching
SURF_CACHE_MAX_ENTRIES 1000 LRU cap per cache namespace
SURF_CACHE_ROOT <profile>/cache cache directory
SURF_INSECURE_TLS =SURF_CLOUD_MODE --ignore-certificate-errors (auto-on in cloud mode)
SURF_NO_SANDBOX =SURF_CLOUD_MODE --no-sandbox (auto-on in cloud mode)
SURF_TELEMETRY false set true to enable jsonl event logging (search outcomes, cache hits/misses, tool errors, parser staleness) under {SURF_TELEMETRY_ROOT}. Designed as the input feed for the self-healing pipeline. Off by default.
SURF_TELEMETRY_ROOT <profile>/telemetry directory for jsonl telemetry files. UTC-dated one file per day (YYYY-MM-DD.jsonl).
SURF_SELF_HEALING true per-strategy outcome tracking + persisted reordering. Healing must win by 3 outcomes before reorder kicks in, so single-call flapping is impossible. Set false to pin the default strategy order.
SURF_SELF_HEALING_FILE <profile>/.heal/strategy-order.json persistence path for healing state. Atomic tmp+rename writes; debounced 5s.
SURF_LLM_HEAL false opt-in for LLM-assisted selector repair in the workflow-only repairWithLLM helper. Off by default → no third-party LLM request ever fires. When true, requires ANTHROPIC_API_KEY (your own); the package never ships a maintainer key.
ANTHROPIC_API_KEY your Anthropic key. Read only when SURF_LLM_HEAL=true. The runtime self-healing in SURF_SELF_HEALING is deterministic and never reads this variable.

Troubleshooting

  • CAPTCHA in 4 modes (picked automatically from env):
    • default (local desktop): OS notification fires, headed Chrome opens, human solves, call retries
    • SURF_HEADLESS=false: headed Chrome opens, no notification (user is already watching)
    • SURF_REMOTE_DEBUG=true: DevTools port + instructions printed, attach chrome://inspect locally to solve
    • SURF_CLOUD_MODE=true: fail-fast with CAPTCHA_REQUIRED error
  • Headed Chrome opens to a plain search box instead of CAPTCHA: just type any query in the box and press Enter. Subsequent calls work.
  • "Chrome not found": install Chrome or set CHROME_PATH.
  • Stale selectors: two-layer mitigation — runtime per-strategy reorder (SURF_SELF_HEALING, deterministic) + daily cron that opens draft PRs with candidate fixes (SURF_LLM_HEAL optional, human review required, never auto-merged).
  • Searches feel slower than the Numbers table: check health().pool.fallback. true means the worker pool gave up after 3 warm failures and is using a single context. Usually fixed by npm run bootstrap to refresh the seed profile.
  • SSRF: extract blocks localhost, private IPs, AWS metadata by default. Set SURF_ALLOW_PRIVATE=true to allow them.

Changelog

See CHANGELOG.md.

License

MIT