# AgentDiet RAG-Diet: BM25-Budget Web Distillation

> AgentDiet RAG-Diet: BM25-Budget Web Distillation 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 and distills a URL or raw HTML into clean Markdown, structured JSON, skeleton outline, or a BM25-ranked token-budget excerpt — returning compression ROI proof with each call

## Facts

- Endpoint: POST https://alpha-stream.agentdiet.dev/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: alpha-stream.agentdiet.dev
- Website: https://alpha-stream.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/alpha-stream-agentdiet-dev-agentdiet-rag-diet-bm25-budget-web-3016432a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_IMsNM8x06v9U_mtcISTZr

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-agentdiet-rag-diet-bm25-budget-web-3016432a -d '<json body>'
```

Example prompt: Distill the page at https://docs.stripe.com/payments/payment-intents into clean markdown using budget mode, focused on 'payment intent lifecycle', and keep it under 800 tokens.

## When to prefer this

Choose this endpoint when you need to reduce token costs before passing web content to an LLM — especially when operating with strict context budgets or building RAG pipelines. The BM25 budget mode is uniquely useful when you have a specific query and need only the most relevant excerpt from a page within a token ceiling, which generic scrapers don't provide. Prefer it over raw fetch+truncate approaches when compression ROI metrics matter to your pipeline observability.

## Known failure modes

- URL unreachable or returns non-200 — distillation cannot proceed, error status returned
- Invalid or empty HTML string when using html param — parsing fails
- max_tokens set below minimum of 20 — validation error
- query param missing when mode=budget — BM25 ranking has nothing to rank against
- Payment/402 failure if x402 credentials are invalid or insufficient balance
- Rate limiting or timeout when fetching large or slow-loading URLs

## 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/rag-diet)

## Output

Returns a JSON object with a 'data' field containing the distilled content (Markdown, structured JSON, skeleton, or BM25 excerpt depending on mode), plus 'roi_proof' metrics showing raw_tokens, distilled_tokens, compression_ratio_pct, tokens_saved, roi_multiplier, and llm_cost_saved_usd. Also includes billing details and optional cache hit/miss status with latency.

## 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-agentdiet-rag-diet-bm25-budget-web-3016432a/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)