# Semantic HTML Pruner – Web URL Distillation to Agent-Ready Tokens

> Semantic HTML Pruner – Web URL Distillation to Agent-Ready Tokens is a paid API for AI agents from serp-extract.agentdiet.dev, paid per call via MPP, $0.001/call, status unknown (last checked 2026-10-21).

Fetches a URL or raw HTML payload and distills it into compact, agent-ready Markdown, structured JSON, skeleton outline, or BM25-focused budget excerpts with token-saving metrics.

## Facts

- Endpoint: GET https://serp-extract.agentdiet.dev/v1/semantic-html-pruner?utm_source=zero.xyz
- Price: $0.001/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: serp-extract.agentdiet.dev
- Website: https://serp-extract.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/serp-extract-agentdiet-dev-semantic-html-pruner-web-url-distillation-7f851bed
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_3GcmPZre6QTPpTmo0gHKB

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 serp-extract-agentdiet-dev-semantic-html-pruner-web-url-distillation-7f851bed
```

Example prompt: Can you fetch the page at https://stripe.com/docs/payments and distill it into clean markdown, staying under 800 tokens and focusing on the topic of payment intents?

## When to prefer this

Choose this endpoint when an AI agent needs to consume web page content efficiently without exhausting its context window. It is especially valuable when the target page is HTML-heavy with navigation, ads, or boilerplate, and you need clean Markdown or structured JSON. Use budget mode with a BM25 query when you want only the most relevant passage within a strict token ceiling. Prefer this over generic scrapers when token cost savings and compression metrics are important inputs to your pipeline.

## Known failure modes

- Invalid or unreachable URL returns an error status
- max_tokens below minimum of 20 rejected with validation error
- mode=budget without a query may return unfiltered content
- Raw HTML too large may exceed processing limits
- Paywalled or bot-protected pages may return incomplete or empty content
- Payment/billing failure if x402 payment not provided or insufficient

## How this service works

Distill a web URL into compact agent-ready tokens (Live x402 v2, IETF MPP & MCP endpoint at https://serp-extract.agentdiet.dev/v1/semantic-html-pruner)

## Output

Returns a JSON object with a 'data' field containing the distilled content (Markdown text, structured JSON tables/metadata, skeleton outline, or BM25-focused excerpt depending on mode), plus an 'roi_proof' object showing raw vs distilled token counts, compression ratio percentage, tokens saved, ROI multiplier, and estimated LLM cost saved in USD. Also includes billing details and optional cache hit/miss status with latency.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "url"
 ],
 "properties": {
  "url": {
   "type": "string",
   "minLength": 1,
   "description": "Target webpage URL to distill (or builtin://stripe-docs)"
  },
  "mode": {
   "enum": [
    "markdown",
    "structured",
    "skeleton",
    "budget"
   ],
   "type": "string",
   "default": "markdown",
   "description": "Extraction mode: markdown, structured, skeleton, or budget"
  },
  "limit": {
   "type": "integer",
   "default": 20,
   "maximum": 100,
   "minimum": 1,
   "description": "Maximum number of items to return per page (1-100)"
  },
  "query": {
   "type": "string",
   "description": "BM25 focus query when mode=budget"
  },
  "cursor": {
   "type": "string",
   "description": "Opaque pagination cursor for fetching the next page"
  },
  "max_tokens": {
   "type": "integer",
   "minimum": 20,
   "description": "Strict token ceiling when mode=budget"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "status",
  "roi_proof",
  "data"
 ],
 "properties": {
  "data": {
   "type": "object",
   "description": "Distilled Markdown, structured JSON tables/metadata, skeleton outline, or BM25 budget excerpt."
  },
  "cache": {
   "type": "object",
   "properties": {
    "status": {
     "enum": [
      "HIT",
      "MISS"
     ],
     "type": "string"
    },
    "cache_key": {
     "type": "string"
    },
    "latency_ms": {
     "type": "number"
    }
   }
  },
  "status": {
   "type": "string",
   "description": "Execution status ('ok')"
  },
  "billing": {
   "type": "object",
   "properties": {
    "agent_id": {
     "type": "string"
    },
    "payment_method": {
     "type": "string"
    },
    "fee_charged_usd": {
     "type": "number"
    }
   }
  },
  "roi_proof": {
   "type": "object",
   "properties": {
    "raw_tokens": {
     "type": "integer"
    },
    "tokens_saved": {
     "type": "integer"
    },
    "roi_multiplier": {
     "type": "number"
    },
    "distilled_tokens": {
     "type": "integer"
    },
    "llm_cost_saved_usd": {
     "type": "number"
    },
    "compression_ratio_pct": {
     "type": "number"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/serp-extract-agentdiet-dev-semantic-html-pruner-web-url-distillation-7f851bed/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from serp-extract.agentdiet.dev](https://www.zero.xyz/host/serp-extract.agentdiet.dev/llms.txt)