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Web tools

OpenClaw ships two lightweight web tools:
  • web_search β€” Search the web via Brave Search API (default), Perplexity Sonar, or Gemini with Google Search grounding.
  • web_fetch β€” HTTP fetch + readable extraction (HTML β†’ markdown/text).
These are not browser automation. For JS-heavy sites or logins, use the Browser tool.

How it works

  • web_search calls your configured provider and returns results.
    • Brave (default): returns structured results (title, URL, snippet).
    • Perplexity: returns AI-synthesized answers with citations from real-time web search.
    • Gemini: returns AI-synthesized answers grounded in Google Search with citations.
  • Results are cached by query for 15 minutes (configurable).
  • web_fetch does a plain HTTP GET and extracts readable content (HTML β†’ markdown/text). It does not execute JavaScript.
  • web_fetch is enabled by default (unless explicitly disabled).

Choosing a search provider

ProviderProsConsAPI Key
Brave (default)Fast, structured results, free tierTraditional search resultsBRAVE_API_KEY
PerplexityAI-synthesized answers, citations, real-timeRequires Perplexity or OpenRouter accessOPENROUTER_API_KEY or PERPLEXITY_API_KEY
GeminiGoogle Search grounding, AI-synthesizedRequires Gemini API keyGEMINI_API_KEY
See Brave Search setup and Perplexity Sonar for provider-specific details.

Auto-detection

If no provider is explicitly set, OpenClaw auto-detects which provider to use based on available API keys, checking in this order:
  1. Brave β€” BRAVE_API_KEY env var or search.apiKey config
  2. Gemini β€” GEMINI_API_KEY env var or search.gemini.apiKey config
  3. Perplexity β€” PERPLEXITY_API_KEY / OPENROUTER_API_KEY env var or search.perplexity.apiKey config
  4. Grok β€” XAI_API_KEY env var or search.grok.apiKey config
If no keys are found, it falls back to Brave (you’ll get a missing-key error prompting you to configure one).

Explicit provider

Set the provider in config:
{
  tools: {
    web: {
      search: {
        provider: "brave", // or "perplexity" or "gemini"
      },
    },
  },
}
Example: switch to Perplexity Sonar (direct API):
{
  tools: {
    web: {
      search: {
        provider: "perplexity",
        perplexity: {
          apiKey: "pplx-...",
          baseUrl: "https://api.perplexity.ai",
          model: "perplexity/sonar-pro",
        },
      },
    },
  },
}

Getting a Brave API key

  1. Create a Brave Search API account at https://brave.com/search/api/
  2. In the dashboard, choose the Data for Search plan (not β€œData for AI”) and generate an API key.
  3. Run openclaw configure --section web to store the key in config (recommended), or set BRAVE_API_KEY in your environment.
Brave provides a free tier plus paid plans; check the Brave API portal for the current limits and pricing. Recommended: run openclaw configure --section web. It stores the key in ~/.openclaw/openclaw.json under tools.web.search.apiKey. Environment alternative: set BRAVE_API_KEY in the Gateway process environment. For a gateway install, put it in ~/.openclaw/.env (or your service environment). See Env vars.

Using Perplexity (direct or via OpenRouter)

Perplexity Sonar models have built-in web search capabilities and return AI-synthesized answers with citations. You can use them via OpenRouter (no credit card required - supports crypto/prepaid).

Getting an OpenRouter API key

  1. Create an account at https://openrouter.ai/
  2. Add credits (supports crypto, prepaid, or credit card)
  3. Generate an API key in your account settings
{
  tools: {
    web: {
      search: {
        enabled: true,
        provider: "perplexity",
        perplexity: {
          // API key (optional if OPENROUTER_API_KEY or PERPLEXITY_API_KEY is set)
          apiKey: "sk-or-v1-...",
          // Base URL (key-aware default if omitted)
          baseUrl: "https://openrouter.ai/api/v1",
          // Model (defaults to perplexity/sonar-pro)
          model: "perplexity/sonar-pro",
        },
      },
    },
  },
}
Environment alternative: set OPENROUTER_API_KEY or PERPLEXITY_API_KEY in the Gateway environment. For a gateway install, put it in ~/.openclaw/.env. If no base URL is set, OpenClaw chooses a default based on the API key source:
  • PERPLEXITY_API_KEY or pplx-... β†’ https://api.perplexity.ai
  • OPENROUTER_API_KEY or sk-or-... β†’ https://openrouter.ai/api/v1
  • Unknown key formats β†’ OpenRouter (safe fallback)

Available Perplexity models

ModelDescriptionBest for
perplexity/sonarFast Q&A with web searchQuick lookups
perplexity/sonar-pro (default)Multi-step reasoning with web searchComplex questions
perplexity/sonar-reasoning-proChain-of-thought analysisDeep research

Using Gemini (Google Search grounding)

Gemini models support built-in Google Search grounding, which returns AI-synthesized answers backed by live Google Search results with citations.

Getting a Gemini API key

  1. Go to Google AI Studio
  2. Create an API key
  3. Set GEMINI_API_KEY in the Gateway environment, or configure tools.web.search.gemini.apiKey
{
  tools: {
    web: {
      search: {
        provider: "gemini",
        gemini: {
          // API key (optional if GEMINI_API_KEY is set)
          apiKey: "AIza...",
          // Model (defaults to "gemini-2.5-flash")
          model: "gemini-2.5-flash",
        },
      },
    },
  },
}
Environment alternative: set GEMINI_API_KEY in the Gateway environment. For a gateway install, put it in ~/.openclaw/.env.

Notes

  • Citation URLs from Gemini grounding are automatically resolved from Google’s redirect URLs to direct URLs.
  • Redirect resolution uses the SSRF guard path (HEAD + redirect checks + http/https validation) before returning the final citation URL.
  • This redirect resolver follows the trusted-network model (private/internal networks allowed by default) to match Gateway operator trust assumptions.
  • The default model (gemini-2.5-flash) is fast and cost-effective. Any Gemini model that supports grounding can be used.
Search the web using your configured provider.

Requirements

  • tools.web.search.enabled must not be false (default: enabled)
  • API key for your chosen provider:
    • Brave: BRAVE_API_KEY or tools.web.search.apiKey
    • Perplexity: OPENROUTER_API_KEY, PERPLEXITY_API_KEY, or tools.web.search.perplexity.apiKey

Config

{
  tools: {
    web: {
      search: {
        enabled: true,
        apiKey: "BRAVE_API_KEY_HERE", // optional if BRAVE_API_KEY is set
        maxResults: 5,
        timeoutSeconds: 30,
        cacheTtlMinutes: 15,
      },
    },
  },
}

Tool parameters

  • query (required)
  • count (1–10; default from config)
  • country (optional): 2-letter country code for region-specific results (e.g., β€œDE”, β€œUS”, β€œALL”). If omitted, Brave chooses its default region.
  • search_lang (optional): ISO language code for search results (e.g., β€œde”, β€œen”, β€œfr”)
  • ui_lang (optional): ISO language code for UI elements
  • freshness (optional): filter by discovery time
    • Brave: pd, pw, pm, py, or YYYY-MM-DDtoYYYY-MM-DD
    • Perplexity: pd, pw, pm, py
Examples:
// German-specific search
await web_search({
  query: "TV online schauen",
  count: 10,
  country: "DE",
  search_lang: "de",
});

// French search with French UI
await web_search({
  query: "actualitΓ©s",
  country: "FR",
  search_lang: "fr",
  ui_lang: "fr",
});

// Recent results (past week)
await web_search({
  query: "TMBG interview",
  freshness: "pw",
});

web_fetch

Fetch a URL and extract readable content.

web_fetch requirements

  • tools.web.fetch.enabled must not be false (default: enabled)
  • Optional Firecrawl fallback: set tools.web.fetch.firecrawl.apiKey or FIRECRAWL_API_KEY.

web_fetch config

{
  tools: {
    web: {
      fetch: {
        enabled: true,
        maxChars: 50000,
        maxCharsCap: 50000,
        maxResponseBytes: 2000000,
        timeoutSeconds: 30,
        cacheTtlMinutes: 15,
        maxRedirects: 3,
        userAgent: "Mozilla/5.0 (Macintosh; Intel Mac OS X 14_7_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36",
        readability: true,
        firecrawl: {
          enabled: true,
          apiKey: "FIRECRAWL_API_KEY_HERE", // optional if FIRECRAWL_API_KEY is set
          baseUrl: "https://api.firecrawl.dev",
          onlyMainContent: true,
          maxAgeMs: 86400000, // ms (1 day)
          timeoutSeconds: 60,
        },
      },
    },
  },
}

web_fetch tool parameters

  • url (required, http/https only)
  • extractMode (markdown | text)
  • maxChars (truncate long pages)
Notes:
  • web_fetch uses Readability (main-content extraction) first, then Firecrawl (if configured). If both fail, the tool returns an error.
  • Firecrawl requests use bot-circumvention mode and cache results by default.
  • web_fetch sends a Chrome-like User-Agent and Accept-Language by default; override userAgent if needed.
  • web_fetch blocks private/internal hostnames and re-checks redirects (limit with maxRedirects).
  • maxChars is clamped to tools.web.fetch.maxCharsCap.
  • web_fetch caps the downloaded response body size to tools.web.fetch.maxResponseBytes before parsing; oversized responses are truncated and include a warning.
  • web_fetch is best-effort extraction; some sites will need the browser tool.
  • See Firecrawl for key setup and service details.
  • Responses are cached (default 15 minutes) to reduce repeated fetches.
  • If you use tool profiles/allowlists, add web_search/web_fetch or group:web.
  • If the Brave key is missing, web_search returns a short setup hint with a docs link.