# Web URL & HTML Distiller with BM25 Budget Control

> Web URL & HTML Distiller with BM25 Budget Control is a paid API for AI agents from preflight.agentdiet.dev, paid per call via MPP, $0.001/call, status unknown (last checked 2026-10-21).

Fetches a URL or raw HTML and compresses it into agent-ready tokens via markdown, structured, skeleton, or BM25-focused budget mode

## Facts

- Endpoint: GET https://preflight.agentdiet.dev/v1/dom-stripper?utm_source=zero.xyz
- Price: $0.001/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: preflight.agentdiet.dev
- Website: https://preflight.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/preflight-agentdiet-dev-web-url-html-distiller-with-bm25-budget-control-ea17af2c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_oRhTnLELdXtoDZhzCMZ9Y

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 preflight-agentdiet-dev-web-url-html-distiller-with-bm25-budget-control-ea17af2c
```

Example prompt: Fetch the page at https://stripe.com/docs/payments and distill it into clean markdown, keeping it under 1500 tokens and focusing on the payment intents section.

## When to prefer this

Choose this endpoint when an AI agent needs to read a webpage but must stay within a token budget, reduce LLM costs, or extract only relevant content matching a specific query. It is especially useful over raw HTTP fetch when the page is noisy with nav/footer/ads, when you need structured output from unstructured HTML, or when you want measurable compression metrics (ROI proof). Prefer budget mode with a BM25 query for targeted extraction from long pages; prefer markdown mode for general-purpose LLM ingestion.

## Known failure modes

- URL is unreachable or returns non-200 status — fetch failure error
- URL parameter missing — validation error since it is required
- mode=budget used without a query parameter — may return unfiltered or error
- max_tokens set below minimum of 20 — validation rejection
- HTML payload too large — may timeout or exceed processing limits
- Paywalled or JavaScript-rendered pages may yield thin or empty content
- x402 payment failure — endpoint returns 402 if payment not resolved

## How this service works

Distill a URL or raw HTML payload with BM25 budget control (Live x402 v2, IETF MPP & MCP endpoint at https://preflight.agentdiet.dev/v1/dom-stripper)

## Output

Returns a distilled representation of the webpage or HTML in the requested mode (markdown, structured JSON tables, skeleton outline, or BM25-ranked budget excerpt), along with an ROI proof object showing raw vs distilled token counts, compression ratio, tokens saved, and estimated LLM cost savings. Optionally includes billing details and cache hit/miss status.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "url"
 ],
 "properties": {
  "url": {
   "type": "string",
   "minLength": 1,
   "description": "Target webpage URL to fetch and distill (or builtin://stripe-docs)"
  },
  "html": {
   "type": "string",
   "description": "Optional raw HTML string to distill directly without fetching"
  },
  "mode": {
   "enum": [
    "markdown",
    "structured",
    "skeleton",
    "budget"
   ],
   "type": "string",
   "default": "markdown",
   "description": "Distillation mode"
  },
  "query": {
   "type": "string",
   "description": "BM25 focus query when mode=budget"
  },
  "max_tokens": {
   "type": "integer",
   "minimum": 20,
   "description": "Strict token budget 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/preflight-agentdiet-dev-web-url-html-distiller-with-bm25-budget-control-ea17af2c/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from preflight.agentdiet.dev](https://www.zero.xyz/host/preflight.agentdiet.dev/llms.txt)