# Web URL Context Trimmer & Distiller

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

Fetches a web URL (or raw HTML) and compresses it into compact, agent-ready tokens using BM25 budget control and multiple distillation modes

## Facts

- Endpoint: GET https://workflows.agentdiet.dev/v1/context-trimmer?utm_source=zero.xyz
- Price: $0.001/call
- Payment: MPP
- Status: unknown
- Last checked: 2026-10-21
- Activations on Zero: 0
- Provider: workflows.agentdiet.dev
- Website: https://workflows.agentdiet.dev
- Canonical page: https://www.zero.xyz/c/workflows-agentdiet-dev-web-url-context-trimmer-distiller-48cf44a7
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_2aA_oJH3xDXP6EFOjivyk

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 workflows-agentdiet-dev-web-url-context-trimmer-distiller-48cf44a7
```

Example prompt: Distill https://stripe.com/docs/api into compact markdown so I can fit it into my context window — use budget mode with a 2000 token ceiling and focus the BM25 query on 'payment intents'.

## When to prefer this

Choose this endpoint when an AI agent needs to ingest web content but must stay within a strict token budget — especially for long documentation pages, news articles, or HTML-heavy sites. It is ideal when you need BM25-focused relevance trimming (only extracting sections matching a query), or when you want structured/skeleton extraction rather than raw HTML. Prefer it over generic scrapers when you need token-count telemetry and cost-savings proof. Use the builtin://stripe-docs shortcut for Stripe documentation without specifying a full URL.

## Known failure modes

- Invalid or unreachable URL returns an error status
- mode=budget without a query or max_tokens may return unfiltered content
- Very large pages may hit processing limits
- Private or auth-gated pages cannot be fetched
- Raw HTML provided alongside URL may conflict — only one source processed
- max_tokens below minimum of 20 is rejected
- Payment failure (402) if x402 micropayment not satisfied

## How this service works

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

## Output

Returns a JSON object with a 'data' field containing the distilled content (markdown, structured tables/metadata, skeleton outline, or BM25-focused excerpt), plus an 'roi_proof' object showing raw_tokens, distilled_tokens, tokens_saved, compression_ratio_pct, roi_multiplier, and llm_cost_saved_usd. Also includes 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/workflows-agentdiet-dev-web-url-context-trimmer-distiller-48cf44a7/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from workflows.agentdiet.dev](https://www.zero.xyz/host/workflows.agentdiet.dev/llms.txt)