nansen-web-fetcher

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Web Fetch

Fetch and analyze content from one or more URLs using Gemini 2.5 Flash with URL context.

bash

nansen web fetch https://nansen.ai --question "What products does Nansen offer?"
nansen web fetch --url https://example.com --url https://other.com --question "Compare these two sites"
nansen web fetch https://docs.uniswap.org/contracts/v4/overview --question "What changed in v4?"

Positional args and

--url

flags can be combined — all become URLs to fetch.

Flag	Values	Default	Purpose
`--url`	URL	—	URL to fetch (repeatable for multiple URLs, up to 20)
`--question`	string	required	Question to answer about the URL content
`--pretty`	flag	off	Human-readable JSON

Returns:

```
analysis
```
— AI-generated answer to your question
```
retrieved_urls
```
— URLs successfully fetched
```
failed_urls
```
— URLs that could not be retrieved

Tip: Combine with

web search

— search first to find relevant URLs, then fetch to get full content.

bash

undefined

借助Gemini 2.5 Flash并结合URL上下文，抓取并分析一个或多个URL的内容。

bash

nansen web fetch https://nansen.ai --question "What products does Nansen offer?"
nansen web fetch --url https://example.com --url https://other.com --question "Compare these two sites"
nansen web fetch https://docs.uniswap.org/contracts/v4/overview --question "What changed in v4?"

位置参数和

--url

标志可以结合使用——所有指定的内容都会成为待抓取的URL。

标志	取值	默认值	用途
`--url`	URL	—	待抓取的URL（可重复指定多个URL，最多20个）
`--question`	字符串	必填	关于URL内容的待回答问题
`--pretty`	标志	关闭	生成人类易读的JSON格式

返回内容：

```
analysis
```
— AI生成的问题答案
```
retrieved_urls
```
— 成功抓取的URL列表
```
failed_urls
```
— 无法抓取的URL列表

提示： 与

web search

搭配使用——先搜索找到相关URL，再通过fetch获取完整内容进行分析。

bash

undefined

Find and analyze in two steps

分两步完成查找与分析

nansen web search "uniswap v4 launch" --num-results 3 --fields link nansen web fetch https://blog.uniswap.org/... --question "What are the key changes?"


**Note:** 30s timeout. Paywalled or bot-blocked pages may appear in `failed_urls`.

nansen web search "uniswap v4 launch" --num-results 3 --fields link nansen web fetch https://blog.uniswap.org/... --question "What are the key changes?"


**注意：** 超时时间为30秒。付费墙或被机器人拦截的页面可能会出现在`failed_urls`中。