# Context Bloat Eliminator — BM25-Budget Web Distiller

> Context Bloat Eliminator — BM25-Budget Web Distiller is a paid API for AI agents from hn-pulse.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, a skeleton outline, or a BM25-focused token-budget excerpt, returning compression stats and ROI proof.

## Facts

- Endpoint: POST https://hn-pulse.agentdiet.dev/v1/context-bloat-eliminator?utm_source=zero.xyz
- Price: $0.001/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-23
- Activations on Zero: 0
- Provider: hn-pulse.agentdiet.dev
- Website: https://hn-pulse.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/hn-pulse-agentdiet-dev-context-bloat-eliminator-bm25-budget-web-b6d73bc0
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_7KuQNFQyJtQy6r060TRgA

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 hn-pulse-agentdiet-dev-context-bloat-eliminator-bm25-budget-web-b6d73bc0 -d '<json body>'
```

Example prompt: Distill https://stripe.com/docs/api into clean Markdown using budget mode, focusing on 'authentication and API keys', and cap the output at 800 tokens — I want to see how many tokens you saved compared to the raw page.

## When to prefer this

Choose this endpoint when you need to shrink a webpage or HTML blob to fit inside an LLM context window, especially when you want fine-grained token-budget control via BM25 relevance scoring. It is ideal for agentic pipelines that must read external web content cheaply without blowing token budgets. Prefer it over generic scrapers when you need ROI proof (tokens saved, cost saved) or when you want structured output (tables, metadata, skeleton) rather than raw HTML. The budget mode with a query string is particularly powerful for targeted extraction from long documentation or news pages.

## Known failure modes

- URL unreachable or returns non-200 — endpoint may error or return empty distillation
- HTML payload too large — may exceed processing limits
- mode=budget without a query field — BM25 ranking has no focus term
- max_tokens set below 20 — rejected by schema validation
- Paywalled or JavaScript-rendered pages — raw HTML fetch may return login walls or empty shells
- Payment not attached or insufficient — returns HTTP 402 requiring x402 USDC payment

## How this service works

Distill a URL or raw HTML payload with BM25 budget control (Live x402 v2, IETF MPP & MCP endpoint at https://hn-pulse.agentdiet.dev/v1/context-bloat-eliminator)

## Output

Returns a JSON object with a 'data' field containing the distilled content (Markdown text, structured JSON tables/metadata, skeleton outline, or BM25-ranked excerpt depending on mode), plus an 'roi_proof' object showing raw_tokens, distilled_tokens, tokens_saved, compression_ratio_pct, roi_multiplier, and llm_cost_saved_usd. Also includes a cache status (HIT/MISS) and optional billing record.

## 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/hn-pulse-agentdiet-dev-context-bloat-eliminator-bm25-budget-web-b6d73bc0/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from hn-pulse.agentdiet.dev](https://www.zero.xyz/host/hn-pulse.agentdiet.dev/llms.txt)