# 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 whale-momentum.agentdiet.dev, paid per call via MPP, $0.001/call, status unknown (last checked 2026-10-21).

Fetches a webpage (or accepts raw HTML) and distills it into compact, agent-ready Markdown, structured JSON, skeleton outline, or BM25-ranked token-budgeted excerpts.

## Facts

- Endpoint: GET https://whale-momentum.agentdiet.dev/v1/url-to-markdown?utm_source=zero.xyz
- Price: $0.001/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: whale-momentum.agentdiet.dev
- Website: https://whale-momentum.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/whale-momentum-agentdiet-dev-web-url-to-markdown-distiller-with-bm25-52ebaad5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_PMR3aBnNpfTFCA1QwrDDb

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 whale-momentum-agentdiet-dev-web-url-to-markdown-distiller-with-bm25-52ebaad5
```

Example prompt: Distill https://stripe.com/docs/api into compact markdown using budget mode, focused on 'payment intents', and cap it at 500 tokens so it fits in my context window.

## When to prefer this

Choose this endpoint when you need to shrink a webpage's token footprint before passing it to an LLM, especially when you have a strict context budget. It is particularly valuable when you want BM25-ranked excerpts focused on a specific query rather than the full page. Prefer it over generic scrapers when you need built-in compression metrics (roi_proof) to track token savings and LLM cost reduction. It also supports raw HTML input, making it useful when you've already fetched the page yourself and just need distillation.

## Known failure modes

- Invalid or unreachable URL returns an error status and no data
- Raw HTML provided without url field may be rejected if html field is not recognized
- mode=budget without a query or max_tokens may return unfiltered results
- Pages behind authentication or bot-protection may return empty or incomplete content
- max_tokens set too low (below 20) is rejected by schema validation
- Rate limiting or payment failure via x402 may block the request

## How this service works

Distill a URL or raw HTML payload with BM25 budget control (Live x402 v2, IETF MPP & MCP endpoint at https://whale-momentum.agentdiet.dev/v1/url-to-markdown)

## Output

Returns a JSON object containing: a 'data' field with the distilled content (Markdown text, structured tables/metadata, skeleton outline, or BM25-ranked excerpt depending on mode); an 'roi_proof' object showing raw_tokens, distilled_tokens, tokens_saved, compression_ratio_pct, roi_multiplier, and llm_cost_saved_usd; optional 'cache' metadata (HIT/MISS, latency_ms); optional 'billing' details; and a 'status' field indicating execution success.

## 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/whale-momentum-agentdiet-dev-web-url-to-markdown-distiller-with-bm25-52ebaad5/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from whale-momentum.agentdiet.dev](https://www.zero.xyz/host/whale-momentum.agentdiet.dev/llms.txt)