# Web Distill with BM25 Budget Control

> Web Distill with BM25 Budget Control is a paid API for AI agents from onchain-risk.agentdiet.dev, 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 compact, token-efficient content using BM25 ranking with strict token budget control

## Facts

- Endpoint: POST https://onchain-risk.agentdiet.dev/v1/distill?utm_source=zero.xyz
- Price: $0.001/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Provider: onchain-risk.agentdiet.dev
- Website: https://onchain-risk.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/onchain-risk-agentdiet-dev-web-distill-with-bm25-budget-control-6d91b3b6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_M5DDzVOMBxPqnHoClRcCF

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 onchain-risk-agentdiet-dev-web-distill-with-bm25-budget-control-6d91b3b6 -d '<json body>'
```

Example prompt: Distill the content at https://docs.stripe.com/payments into compact markdown, focusing on 'payment intents', and keep it under 1000 tokens using budget mode so I don't blow my context window.

## When to prefer this

Choose this endpoint when you need to feed webpage content into an LLM but want to minimize token usage and cost. It is especially valuable when you have a specific query focus (use mode=budget with BM25 ranking) and need to stay within a strict token ceiling. Prefer it over generic scrapers when ROI metrics (tokens saved, cost saved) matter to your workflow, or when you need structured/skeleton output rather than raw HTML.

## Known failure modes

- URL unreachable or returns non-200 status — distillation fails with error status
- Token budget too low (below 20) — rejected by schema validation
- Invalid mode enum value — request rejected
- HTML payload empty or malformed — poor distillation quality
- BM25 query missing when mode=budget — may return unranked or full content
- Rate limiting or payment failure via x402 — call blocked

## How this service works

Distill a URL or raw HTML payload with BM25 budget control (Live x402 v2, IETF MPP & MCP endpoint at https://onchain-risk.agentdiet.dev/v1/distill)

## Output

Returns a distilled version of the webpage or HTML in the requested format (markdown, structured JSON, skeleton outline, or BM25 budget excerpt), plus an roi_proof object showing raw vs. distilled token counts, compression ratio, tokens saved, and estimated LLM cost saved in 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/onchain-risk-agentdiet-dev-web-distill-with-bm25-budget-control-6d91b3b6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from onchain-risk.agentdiet.dev](https://www.zero.xyz/host/onchain-risk.agentdiet.dev/llms.txt)