# content.hugen.tokyo Content Summarizer

> content.hugen.tokyo Content Summarizer is a paid API for AI agents from content.hugen.tokyo, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15, last successful call 2026-05-02).

Fetches a URL, extracts clean article text, and returns a 2-4 sentence summary, 3-5 key points, and named entities (people, orgs, products, locations, events)

## Facts

- Endpoint: GET https://content.hugen.tokyo/content/summary
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Last successful call: 2026-05-02
- Success rate: 90% of calls made through Zero
- Activations on Zero: 20
- Tags: x402
- Canonical page: https://www.zero.xyz/c/content-hugen-tokyo-f4e360b6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4AGmOMZN8ASb5mgfzEs_P

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability content-hugen-tokyo-f4e360b6
```

Example prompt: Can you summarize https://techcrunch.com/2024/05/01/some-article and pull out the key points and any people, organizations, or locations mentioned?

## When to prefer this

Choose this endpoint when you need a combined summary + key points + named entity extraction in a single call without managing your own LLM prompts or NLP pipeline. Ideal for quickly digesting news articles, blog posts, or documentation pages when you need both the gist and the entities mentioned. Prefer over raw scraping endpoints when you need AI-processed output rather than raw HTML or text.

## Known failure modes

- URL is unreachable or returns non-200 — endpoint cannot fetch content
- URL points to a PDF or non-HTML resource not supported by the text extractor
- Page is JavaScript-heavy SPA with no server-side rendered content — extracted text may be empty
- Paywalled or login-gated content — extractor only sees the gate, not the article
- URL contains no meaningful article text (e.g. homepage, login page) — summary may be meaningless
- Payment not provided or insufficient — 402 Payment Required response

## How this service works

AI-powered content summarization — extracts clean text from any URL then generates a concise 2-4 sentence summary, 3-5 key points, and named entity extraction (people, organizations, products, locations, events). Handles articles, blog posts, documentation, and news pages. No LLM setup or prompt engineering needed. Accepts USDC payments on Base and Solana

## Output

Returns a 2-4 sentence prose summary of the article, a list of 3-5 key bullet points, and structured named entity extraction categorized into people, organizations, products, locations, and events — all derived from the cleaned article text at the provided URL.

## Example request

```json
{
 "url": "https://www.wikipedia.org/wiki/Machine_learning"
}
```

## Request schema (JSON Schema)

```json
{
 "properties": {
  "input": {
   "required": [
    "method"
   ]
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/content-hugen-tokyo-f4e360b6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from content.hugen.tokyo](https://www.zero.xyz/host/content.hugen.tokyo/llms.txt)