# Web Distillation with BM25 Budget Control

> Web Distillation 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 2026-10-23).

Fetches a URL or accepts raw HTML and distills it into clean Markdown, structured JSON, skeleton outline, or a BM25-ranked token-budgeted excerpt

## Facts

- Endpoint: POST https://x402broker.com/v1/distill?utm_source=zero.xyz
- Price: $0.001/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Provider: x402broker.com
- Website: https://x402broker.com
- Canonical page: https://www.zero.xyz/c/x402broker-com-web-distillation-with-bm25-budget-control-85b7c1a4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_iIspO1ZSCSqp_-nri6UWQ

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-distillation-with-bm25-budget-control-85b7c1a4 -d '<json body>'
```

Example prompt: Fetch the page at https://stripe.com/docs/payments/accept-a-payment and distill it into clean markdown using budget mode focused on the query 'payment intents API' with a max of 800 tokens.

## When to prefer this

Choose this endpoint when you need to feed live web content to an LLM cost-effectively — especially when token budgets matter. It is ideal for grounding agents on documentation, news, or research pages without passing full raw HTML. The BM25 budget mode makes it uniquely suited for query-focused extraction under strict token limits, distinguishing it from generic scrapers that return full page content. Prefer it over search APIs when you already have a URL and need the actual page content distilled.

## Known failure modes

- URL is unreachable or returns non-200 status — endpoint may return an error status
- Raw HTML payload is empty or malformed — distillation may fail or return minimal output
- Token budget too low (below 20) — rejected by schema validation
- BM25 query missing when mode=budget — may produce unranked or default output
- Rate limiting or payment failure via x402 — 402 response requiring payment
- Paywalled or JavaScript-heavy pages may yield incomplete or empty distillation

## 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/distill)

## Output

Returns a JSON object with a 'data' field containing the distilled content (Markdown string, structured JSON tables/metadata, skeleton outline, or BM25-ranked excerpt depending on mode), plus an 'roi_proof' object showing raw vs distilled token counts, compression ratio percentage, tokens saved, ROI multiplier, and estimated LLM cost saved in USD. Also includes optional cache hit/miss status and billing metadata.

## 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-distillation-with-bm25-budget-control-85b7c1a4/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)