AI Text Summarizer API

Summarize raw text or any web URL into key points, with compression ratio and reading-time metrics. Pay-per-call via x402 (USDC on Base L2) — no API key, no signup.

Part of the klymax402 marketplace — 100 x402 micropayment APIs for AI agents, one wallet, USDC on Base.

Quickstart — MCP

{
  "mcpServers": {
    "ai-summarizer": {
      "url": "https://ai-summarizer.api.klymax402.com/mcp"
    }
  }
}

Quickstart — HTTP (x402)

curl "https://ai-summarizer.api.klymax402.com/api/summarize?url=https://example.com/article"
# → 402 Payment Required, with an x402 payment challenge in the response body

Any x402-aware client (@x402/fetch, x402-agent-tools, ATXP) handles the 402 → sign → retry cycle automatically.

Tools

Tool	Method	Path	Price	Description
ai_summarize_text	POST	/api/summarize	$0.01	Summarize raw text into key points
ai_summarize_url	GET	/api/summarize	$0.015	Fetch a URL and summarize its content

ai_summarize_text

Use this when you need to summarize long text into concise key points. Returns a structured summary with bullet points and reading metrics.

Parameters

Name	Type	Required	Description
text	string	yes	The text to summarize
maxLength	number	no	Maximum summary length in words (default 200)

Returns: summary, keyPoints[] (3-7 extracted takeaways), wordCountOriginal, wordCountSummary, reductionPercent, readingTimeMinutes.

Example response:

{"summary":"The article discusses...","keyPoints":["AI adoption grew 40%","Enterprise spending up"],"wordCountOriginal":2500,"wordCountSummary":180,"reductionPercent":92,"readingTimeMinutes":1}

When to use: before presenting lengthy content to users — digesting articles, reports, meeting notes, or documentation into actionable summaries.

Not for: full content extraction (use web_scrape_to_markdown), SEO analysis (use seo_audit_page), sentiment analysis (use text_analyze_sentiment).

ai_summarize_url

Use this when you need to summarize a web page by URL. Fetches the page, extracts text, and returns a structured summary with key points and reading metrics.

Parameters

Name	Type	Required	Description
url	string	yes	URL of the web page to summarize
maxLength	number	no	Maximum summary length in words (default 200)

Returns: summary, keyPoints[], wordCountOriginal, wordCountSummary, reductionPercent, readingTimeMinutes, title, sourceUrl.

Example response:

{"title":"OpenAI Blog","summary":"The post announces...","keyPoints":["GPT-5 launches Q3","API pricing drops 50%"],"wordCountOriginal":4200,"wordCountSummary":200,"reductionPercent":95,"readingTimeMinutes":1}

When to use: before citing or referencing web articles — quickly understanding web pages without reading the full content.

Not for: full content extraction (use web_scrape_to_markdown), SEO analysis (use seo_audit_page), screenshot capture (use capture_screenshot).

Example agent prompts

• "Summarize this article in 100 words: https://..."
• "Give me the key points from this text before I include it in my report"
• "Summarize this URL and tell me the reading time"

Payment

• Protocol: x402 — HTTP-native pay-per-call, no signup, no API key
• Network: Base L2 (eip155:8453)
• Asset: USDC
• Facilitator: Coinbase CDP (primary), PayAI (fallback)
• Also reachable via ATXP (OAuth-wrapped x402, RFC 9728 protected-resource metadata)

Part of klymax402

100 x402 micropayment APIs for AI agents — one wallet, USDC on Base, zero signup.

• Catalog: https://klymax402.com/llms.txt
• Full API reference: https://klymax402.com/llms-full.txt
• Live stats: https://klymax402.com/stats

License

MIT