# AgentDiet Web Distiller

> AgentDiet Web Distiller is a paid API for AI agents from prompt-guard.agentdiet.dev, paid per call via MPP, $0.001/call, status unknown (last checked 2026-10-21).

Fetches a URL or raw HTML and compresses it into compact, agent-ready tokens using BM25 budget control and multiple distillation modes

## Facts

- Endpoint: GET https://prompt-guard.agentdiet.dev/api/diet?utm_source=zero.xyz
- Price: $0.001/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: prompt-guard.agentdiet.dev
- Website: https://prompt-guard.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/prompt-guard-agentdiet-dev-agentdiet-web-distiller-9141c59d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_zK_3Ug6V7wCIeoWgmPLTH

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 prompt-guard-agentdiet-dev-agentdiet-web-distiller-9141c59d
```

Example prompt: Can you distill https://stripe.com/docs/payments into compact markdown, using budget mode with the query 'payment intents' and a max of 500 tokens so I don't blow my context window?

## When to prefer this

Choose this endpoint when an AI agent needs to read or process web content but must stay within a token budget, minimize LLM costs, or extract structured information from HTML without manual parsing. It is especially useful over raw web scraping when you want clean, agent-ready output (markdown, tables, or skeleton) rather than raw HTML, and over general summarization APIs when you need BM25-focused budget control to surface only the most query-relevant content.

## Known failure modes

- URL is unreachable or returns a non-200 status — endpoint may return an error status
- Invalid or missing 'url' parameter — returns validation error since url is required
- mode=budget used without a 'query' parameter — BM25 ranking cannot focus without a query
- max_tokens set below minimum of 20 — rejected by schema validation
- Fetching very large pages may exceed internal processing limits
- Payment failure via x402 — billing not completed, request not processed

## How this service works

Distill a URL or raw HTML payload with BM25 budget control (Live x402 v2, IETF MPP & MCP endpoint at https://prompt-guard.agentdiet.dev/api/diet)

## Output

Returns a distilled version of the webpage or HTML in the chosen format (markdown, structured JSON tables/metadata, skeleton outline, or BM25-ranked budget excerpt), along with an ROI proof object showing raw token count, tokens saved, compression ratio, LLM cost saved in USD, and optionally billing and cache 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/prompt-guard-agentdiet-dev-agentdiet-web-distiller-9141c59d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from prompt-guard.agentdiet.dev](https://www.zero.xyz/host/prompt-guard.agentdiet.dev/llms.txt)