# URL/HTML to Markdown Distiller with BM25 Budget Control

> URL/HTML to Markdown Distiller with BM25 Budget Control is a paid API for AI agents from alpha-stream.agentdiet.dev, paid per call via MPP, $0.001/call, status unknown (last checked 2026-10-23).

Fetches a URL or processes raw HTML and distills it into compact Markdown, structured JSON, or a BM25-ranked token-budget excerpt for AI agent consumption

## Facts

- Endpoint: POST https://alpha-stream.agentdiet.dev/v1/url-to-markdown?utm_source=zero.xyz
- Price: $0.001/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Provider: alpha-stream.agentdiet.dev
- Website: https://alpha-stream.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/alpha-stream-agentdiet-dev-url-html-to-markdown-distiller-with-bm25-be7a1f80
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_J9AmXNUYRxQysL3bLG8Jv

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 alpha-stream-agentdiet-dev-url-html-to-markdown-distiller-with-bm25-be7a1f80 -d '<json body>'
```

Example prompt: Distill the contents of https://stripe.com/docs/api into compact markdown using budget mode, focused on 'payment intents', and keep it under 2000 tokens.

## When to prefer this

Choose this endpoint when an AI agent needs to consume webpage content but must stay within a token budget, or when raw HTML needs to be cleaned into agent-readable Markdown. The BM25 budget mode is especially valuable when only the most query-relevant portions of a page are needed, minimizing LLM costs. Prefer over generic scrapers when you need built-in compression metrics and ROI proof of token savings.

## Known failure modes

- URL unreachable or returns non-200 status — fetch error with no distilled content
- Invalid or missing URL with no html fallback — validation error
- Token budget too low (below 20) — schema validation rejection
- Unsupported content type at URL (e.g. binary PDF) — distillation failure
- Rate limit or payment failure via x402 — 402 Payment Required response
- BM25 query provided without mode=budget — query silently ignored or misapplied

## How this service works

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

## Output

Returns a distilled payload in the requested mode (Markdown, structured JSON, skeleton outline, or BM25 budget excerpt), along with ROI proof metrics including raw token count, distilled token count, tokens saved, compression ratio percentage, and estimated LLM cost saved in USD. Also includes cache hit/miss status and billing info.

## 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/alpha-stream-agentdiet-dev-url-html-to-markdown-distiller-with-bm25-be7a1f80/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from alpha-stream.agentdiet.dev](https://www.zero.xyz/host/alpha-stream.agentdiet.dev/llms.txt)