Function webSearch

packages/mcp/src/services/textService.js:321–388

(params)

}

async function webSearch(params) {
    requireApiKey();

    const { query, model = "perplexity-fast", detailed = false } = params;

    if (!query || typeof query !== "string") {
        throw new Error("Query is required and must be a string");
    }

    const searchModels = [
        "perplexity-fast",
        "perplexity-reasoning",
        "gemini-search",
    ];
    if (!searchModels.includes(model)) {
        throw new Error(
            `Model "${model}" doesn't support web search. Use: ${searchModels.join(", ")}`,
        );
    }

    const systemPrompt = detailed
        ? "Search the web and provide a comprehensive answer with sources. Include relevant details and cite your sources."
        : "Search the web and provide a concise, accurate answer. Include source URLs.";

    const requestBody = {
        model,
        messages: [
            { role: "system", content: systemPrompt },
            { role: "user", content: query },
        ],
    };

    try {
        const response = await fetch(`${API_BASE_URL}/v1/chat/completions`, {
            method: "POST",
            headers: {
                "Content-Type": "application/json",
                ...getAuthHeaders(),
            },
            body: JSON.stringify(requestBody),
        });

        if (!response.ok) {
            const errorText = await response
                .text()
                .catch(() => "Unknown error");
            throw new Error(parseApiError(response.status, errorText));
        }

        const result = await response.json();
        const answer = result.choices?.[0]?.message?.content || "";

        const responseData = {
            answer,
            query,
            model: result.model || model,
        };