# Web URL to Markdown Distiller with BM25 Budget Control

> Web URL to Markdown Distiller with BM25 Budget Control is a paid API for AI agents from x402broker.com, paid per call via MPP, $0.001/call, status unknown (last checked 2026-10-21).

Fetches a webpage URL (or raw HTML) and distills it into compact, agent-ready markdown, structured JSON, skeleton outline, or BM25-focused token-budget excerpt

## Facts

- Endpoint: GET https://x402broker.com/v1/spa-markdown-reader?utm_source=zero.xyz
- Price: $0.001/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: x402broker.com
- Website: https://x402broker.com
- Canonical page: https://www.zero.xyz/c/x402broker-com-web-url-to-markdown-distiller-with-bm25-budget-control-d21dc3f4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_1nDmwAgzPaoii6gsuqDjz

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 x402broker-com-web-url-to-markdown-distiller-with-bm25-budget-control-d21dc3f4
```

Example prompt: Distill https://docs.stripe.com/payments/accept-a-payment into compact markdown using budget mode, focused on 'payment intent setup', and keep it under 500 tokens.

## When to prefer this

Choose this endpoint when an AI agent needs to ingest live web content within a strict token budget, especially for documentation pages, research articles, or landing pages. It is ideal when you want BM25-ranked relevance filtering rather than raw full-page scraping, or when you need compression metrics (ROI proof) to justify the fetch cost. Prefer this over generic scrapers when LLM token cost savings and structured markdown output are priorities.

## Known failure modes

- URL is unreachable or returns non-200 status — endpoint may error or return empty data
- Paywalled or JavaScript-heavy SPA content may not render correctly without a full browser
- Token budget too low (below 20) causes validation rejection
- Raw HTML payload too large may exceed processing limits
- BM25 query not specified when mode=budget may produce unfocused results
- Payment failure via x402 protocol results in 402 response and no content returned

## How this service works

Distill a URL or raw HTML payload with BM25 budget control (Live x402 v2, IETF MPP & MCP endpoint at https://x402broker.com/v1/spa-markdown-reader)

## Output

Returns a data object containing the distilled content (markdown text, structured JSON tables/metadata, skeleton outline, or BM25-focused excerpt depending on mode), alongside an roi_proof block showing raw token count, distilled token count, tokens saved, compression ratio percentage, ROI multiplier, and estimated LLM cost saved in USD. Also includes cache status (HIT/MISS) and optional billing details.

## 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/x402broker-com-web-url-to-markdown-distiller-with-bm25-budget-control-d21dc3f4/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402broker.com](https://www.zero.xyz/host/x402broker.com/llms.txt)