# Web URL Context Compressor & Distiller

> Web URL Context Compressor & Distiller is a paid API for AI agents from shopify-spy.agentdiet.dev, paid per call via MPP, $0.001/call, status unknown (last checked 2026-10-21).

Fetches a webpage URL (or raw HTML) and distills it into compact, agent-ready tokens using BM25 budget control and multiple extraction modes

## Facts

- Endpoint: GET https://shopify-spy.agentdiet.dev/v1/context-compress?utm_source=zero.xyz
- Price: $0.001/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: shopify-spy.agentdiet.dev
- Website: https://shopify-spy.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/shopify-spy-agentdiet-dev-web-url-context-compressor-distiller-03796e65
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_bdZ6RXBpAj02P0JTrbUOB

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 shopify-spy-agentdiet-dev-web-url-context-compressor-distiller-03796e65
```

Example prompt: Can you distill https://stripe.com/docs/api into compact markdown so I can fit it in my context window — use budget mode with a max of 2000 tokens and focus the BM25 query on 'payment intents'?

## When to prefer this

Choose this endpoint when you need to compress or distill web page content before feeding it to an LLM, especially when token costs or context window limits are a concern. It is particularly valuable in budget mode with a BM25 focus query when you only want topically relevant passages from a large page. Prefer it over raw fetch-and-pass approaches when you want measurable ROI proof (tokens saved, cost saved) and multiple output format options (markdown, structured JSON, skeleton, budget excerpt).

## Known failure modes

- URL is unreachable or returns non-200 status — fetch fails with error
- Token budget (max_tokens) too small to produce meaningful output — returns minimal or empty excerpt
- BM25 query returns no matching passages — empty budget excerpt
- Raw HTML or URL produces no parseable content — empty data object
- Payment/402 authorization failure — endpoint returns HTTP 402 requiring payment
- Invalid mode enum value — request rejected with validation error

## How this service works

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

## Output

Returns a JSON object containing the distilled content (markdown text, structured JSON tables/metadata, skeleton outline, or BM25 budget excerpt depending on mode), an roi_proof block with raw_tokens, distilled_tokens, tokens_saved, compression_ratio_pct, roi_multiplier, and llm_cost_saved_usd, 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/shopify-spy-agentdiet-dev-web-url-context-compressor-distiller-03796e65/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from shopify-spy.agentdiet.dev](https://www.zero.xyz/host/shopify-spy.agentdiet.dev/llms.txt)