# RAG-Diet: URL & HTML Distillation with BM25 Budget Control

> RAG-Diet: URL & HTML 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 and distills a URL or raw HTML into compressed Markdown, structured JSON, skeleton outlines, or BM25-scored token-budgeted excerpts for LLM-efficient retrieval.

## Facts

- Endpoint: POST https://x402broker.com/v1/rag-diet?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-rag-diet-url-html-distillation-with-bm25-budget-control-e0767a00
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_3CILF4PlwjFpAKxzCwR0A

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-rag-diet-url-html-distillation-with-bm25-budget-control-e0767a00 -d '<json body>'
```

Example prompt: Can you distill https://stripe.com/docs/api into compact markdown using BM25 budget mode focused on 'webhook events', keeping it under 500 tokens so I can feed it into my pipeline cheaply?

## When to prefer this

Choose this endpoint when you need to compress web content or HTML for LLM pipelines with strict token budgets, especially when you want BM25-ranked relevance filtering, ROI/cost-savings telemetry, or multiple distillation modes (markdown, structured, skeleton, budget). Prefer over generic scrapers when token efficiency and LLM cost reduction are primary concerns, or when you need structured JSON extraction from HTML rather than raw text.

## Known failure modes

- URL is unreachable or returns non-200 status — endpoint may return an error status
- Raw HTML payload is malformed or empty — distillation may fail or return minimal output
- BM25 query not provided when mode=budget — may default or error
- max_tokens set below minimum of 20 — validation error
- Rate limiting or payment failure via x402 — 402 response requiring payment
- Target URL returns non-HTML content (PDF, binary) — unexpected distillation results

## 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/rag-diet)

## Output

Returns a 'data' object containing the distilled content (Markdown, structured JSON, skeleton outline, or BM25-scored excerpt depending on mode), plus an 'roi_proof' block showing raw_tokens, distilled_tokens, tokens_saved, compression_ratio_pct, and llm_cost_saved_usd. Also includes cache status (HIT/MISS) 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/x402broker-com-rag-diet-url-html-distillation-with-bm25-budget-control-e0767a00/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)