# AgentDiet BM25 Budget-Controlled Web Distillation API

> AgentDiet BM25 Budget-Controlled Web Distillation API 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 compact agent-ready content using BM25 budget control to enforce strict token ceilings

## Facts

- Endpoint: POST https://alpha-stream.agentdiet.dev/api/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-bm25-budget-controlled-web-f4e75c2c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_8nVMi9dt4k3fOsW4NPj5f

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-bm25-budget-controlled-web-f4e75c2c -d '<json body>'
```

Example prompt: Can you distill https://stripe.com/docs/payments into clean markdown using budget mode, focused on 'payment intents', and keep it under 800 tokens?

## When to prefer this

Choose this endpoint when you need to fetch and compress a specific web page or HTML payload to fit within a strict LLM token budget, especially when you want BM25 keyword-focused excerpting to surface only the most relevant content. It is particularly valuable over generic scraping tools when you need built-in ROI/token-savings metrics, support for multiple distillation modes (markdown, structured, skeleton, budget), and micropayment-native (x402) operation within an agent pipeline.

## Known failure modes

- URL is unreachable or returns non-200 response — endpoint may error or return empty data
- max_tokens set below 20 — rejected by schema validation
- mode=budget used without providing a query — BM25 focus is undefined
- Raw HTML provided but is malformed or empty — distillation may produce minimal output
- Rate limiting or payment failure via x402 — request not processed
- Target site blocks headless fetching — content unavailable

## 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/api/diet)

## Output

Returns a JSON object containing distilled content (as Markdown, structured JSON tables/metadata, skeleton outline, or BM25-focused excerpt), a cache status object (HIT/MISS), billing details (fee charged in USD), and an ROI proof block showing raw token count, distilled token count, tokens saved, compression ratio percentage, and estimated LLM cost savings in USD.

## 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-bm25-budget-controlled-web-f4e75c2c/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)