# Web URL & HTML Distiller with BM25 Budget Control

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

Fetches and distills a URL or raw HTML into compact, agent-ready tokens using BM25-ranked budget trimming with configurable output modes

## Facts

- Endpoint: POST https://onchain-risk.agentdiet.dev/v1/paywall-clean-extract?utm_source=zero.xyz
- Price: $0.001/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Provider: onchain-risk.agentdiet.dev
- Website: https://onchain-risk.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/onchain-risk-agentdiet-dev-web-url-html-distiller-with-bm25-budget-9fc804a5
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_iO1xRZvjmmfR1NvT8WAB-

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 onchain-risk-agentdiet-dev-web-url-html-distiller-with-bm25-budget-9fc804a5 -d '<json body>'
```

Example prompt: Fetch the page at https://stripe.com/docs/api and distill it in budget mode with the query 'payment intents' and a max of 500 tokens, so I only get the most relevant content.

## When to prefer this

Choose this endpoint when you need to reduce token consumption from web pages or HTML documents before feeding content to an LLM, especially when you have a specific topic query (BM25 mode) or a hard token budget ceiling. It is particularly valuable over raw fetch-and-paste approaches when context windows are limited or LLM API costs are a concern. The BM25 budget mode is uniquely suited for targeted content retrieval from long documents.

## Known failure modes

- URL unreachable or returns non-200 status — endpoint may return an error status
- Invalid or missing URL with no HTML fallback — required field validation error
- Token budget too small (below 20) — minimum validation failure
- BM25 query missing when mode=budget — may return unfiltered or error response
- Rate limiting or payment failure via x402 — 402 response requiring payment
- Malformed HTML input — may produce poor distillation quality

## How this service works

Distill a URL or raw HTML payload with BM25 budget control (Live x402 v2, IETF MPP & MCP endpoint at https://onchain-risk.agentdiet.dev/v1/paywall-clean-extract)

## Output

Returns a distilled version of the webpage or HTML in the requested mode (markdown, structured JSON, 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. Also includes cache 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/onchain-risk-agentdiet-dev-web-url-html-distiller-with-bm25-budget-9fc804a5/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from onchain-risk.agentdiet.dev](https://www.zero.xyz/host/onchain-risk.agentdiet.dev/llms.txt)