# Semantic HTML Pruner with BM25 Budget Control

> Semantic HTML Pruner with BM25 Budget Control is a paid API for AI agents from 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 compressed Markdown, structured JSON, a skeleton outline, or a BM25-focused token-budget excerpt

## Facts

- Endpoint: POST https://agentdiet.dev/v1/semantic-html-pruner?utm_source=zero.xyz
- Price: $0.001/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Provider: agentdiet.dev
- Website: https://agentdiet.dev
- Canonical page: https://www.zero.xyz/c/agentdiet-dev-semantic-html-pruner-with-bm25-budget-control-42e41439
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_bHeYHgOParlCuN1yVDSMP

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 agentdiet-dev-semantic-html-pruner-with-bm25-budget-control-42e41439 -d '<json body>'
```

Example prompt: Distill the content at https://stripe.com/docs/api into clean Markdown using budget mode with the query 'payment intents' and cap it at 2000 tokens so I can feed it to my LLM without blowing my context window.

## When to prefer this

Choose this endpoint when you need to reduce token consumption before feeding web content to an LLM, especially when working within strict context window limits. It is ideal for agents that repeatedly fetch web pages and need cost-efficient content extraction. The BM25 budget mode is uniquely useful when you have a specific query and a hard token ceiling, outperforming generic scrapers that return full raw text. Prefer it over general-purpose scrapers when compression ratio and LLM cost savings matter.

## Known failure modes

- URL is unreachable or returns a non-200 status — endpoint cannot fetch the page
- HTML payload is empty or malformed — distillation yields no meaningful content
- mode=budget requested without a 'query' parameter — BM25 ranking cannot proceed
- max_tokens set below minimum of 20 — rejected with validation error
- Paywalled or JavaScript-rendered pages may return incomplete content
- x402 payment not completed — request blocked before processing

## How this service works

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

## Output

Returns a JSON object with a 'data' field containing the distilled output (Markdown text, structured JSON tables/metadata, skeleton outline, or BM25 excerpt), an 'roi_proof' object showing raw vs distilled token counts, tokens saved, compression ratio, estimated LLM cost saved in USD, and an ROI multiplier, plus optional cache hit/miss status 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/agentdiet-dev-semantic-html-pruner-with-bm25-budget-control-42e41439/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentdiet.dev](https://www.zero.xyz/host/agentdiet.dev/llms.txt)