# Context Bloat Eliminator – BM25 Budget-Controlled Web Distillation

> Context Bloat Eliminator – BM25 Budget-Controlled Web Distillation 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, agent-ready content with BM25-ranked token budget control, returning markdown, structured data, a skeleton outline, or a focused excerpt.

## Facts

- Endpoint: POST https://onchain-risk.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: onchain-risk.agentdiet.dev
- Website: https://onchain-risk.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/onchain-risk-agentdiet-dev-context-bloat-eliminator-bm25-budget-40c19a3e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_neLpGwhzGmRKM-T8xBRAy

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-context-bloat-eliminator-bm25-budget-40c19a3e -d '<json body>'
```

Example prompt: Distill this page https://stripe.com/docs/payments/checkout into budget mode, focusing the BM25 query on 'session creation' and keeping the output under 500 tokens — I need just the relevant bits without blowing my context window.

## When to prefer this

Choose this endpoint when you need to feed web content into an LLM but want strict token budget control and BM25-ranked relevance filtering rather than naive truncation. It is especially valuable when you have a specific query focus and need only the most relevant sections of a page, or when you want structured JSON tables or a skeleton outline rather than raw markdown. Prefer it over generic scrapers when LLM cost reduction and ROI proof are important, and over the simpler distill endpoint when you need the BM25 budget mode.

## Known failure modes

- URL unreachable or returns non-200 response — distillation fails with fetch error
- HTML payload too large to process within service limits
- max_tokens set below minimum of 20 — rejected with validation error
- mode=budget used without a query field — BM25 ranking has no focus signal
- Invalid or malformed URL string — schema validation rejects request
- Payment failure via x402 — 402 response returned if USDC payment not authorized

## 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/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 budget excerpt depending on mode), plus an 'roi_proof' object showing raw token count, distilled token count, tokens saved, compression ratio percentage, estimated LLM cost saved in USD, and ROI multiplier. Also includes optional cache status (HIT/MISS) and billing metadata.

## 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-context-bloat-eliminator-bm25-budget-40c19a3e/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)