# HTML-to-Markdown Web Distiller with BM25 Budget Control

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

Fetches and converts a URL or raw HTML payload into compressed Markdown, structured JSON, skeleton outline, or BM25-ranked token-budget excerpt

## Facts

- Endpoint: POST https://defi-yield.agentdiet.dev/v1/html-to-markdown?utm_source=zero.xyz
- Price: $0.001/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Provider: defi-yield.agentdiet.dev
- Website: https://defi-yield.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/defi-yield-agentdiet-dev-html-to-markdown-web-distiller-with-bm25-7b5666ec
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Xx2LkIq3c_ECmvf29oGUz

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 defi-yield-agentdiet-dev-html-to-markdown-web-distiller-with-bm25-7b5666ec -d '<json body>'
```

Example prompt: Distill the page at https://docs.uniswap.org/protocol/introduction into clean markdown using budget mode, focused on the query 'liquidity pools', and cap it at 2000 tokens so it fits in my prompt.

## When to prefer this

Choose this endpoint when you need to feed web page content into an LLM but want to minimize token usage and cost. It is especially valuable when the source page is large and you only care about a focused topic (use mode=budget with a BM25 query), or when you need structured tables and metadata extracted from HTML (use mode=structured). Prefer this over raw fetch-and-parse when you want built-in compression metrics and token-savings proof. It is also suitable when you already have raw HTML and want to avoid an extra fetch round-trip.

## Known failure modes

- URL is unreachable or returns non-200 status — endpoint may return an error status
- Raw HTML input is malformed or empty — distillation may produce empty or partial output
- Token budget too small (below 20 tokens) — rejected by schema validation
- BM25 query provided without mode=budget — query may be ignored
- Rate limiting or payment failure via x402 — call blocked until payment resolved
- Target page is JavaScript-rendered SPA — fetched HTML may lack meaningful content

## How this service works

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

## Output

Returns a 'data' object containing the distilled content (Markdown string, structured JSON tables/metadata, skeleton outline, or BM25-ranked excerpt depending on mode), alongside an 'roi_proof' block showing raw token count, distilled token count, tokens saved, compression ratio percentage, LLM cost saved in USD, and ROI multiplier. Also includes cache hit/miss status and 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/defi-yield-agentdiet-dev-html-to-markdown-web-distiller-with-bm25-7b5666ec/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from defi-yield.agentdiet.dev](https://www.zero.xyz/host/defi-yield.agentdiet.dev/llms.txt)