# AgentDiet SPA Markdown Reader — URL/HTML Distiller with BM25 Budget Control

> AgentDiet SPA Markdown Reader — URL/HTML Distiller 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 a URL or accepts raw HTML and distills it into compressed Markdown, structured JSON, skeleton outline, or a BM25-focused excerpt within a strict token budget.

## Facts

- Endpoint: POST https://agentdiet.dev/v1/spa-markdown-reader?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-agentdiet-spa-markdown-reader-url-html-distiller-with-f033cb11
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_M1L2R1R-cjVzS3k3p84qR

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-agentdiet-spa-markdown-reader-url-html-distiller-with-f033cb11 -d '<json body>'
```

Example prompt: Fetch https://stripe.com/docs/payments and distill it into compressed markdown using budget mode focused on the query 'payment intents', with a max of 2000 tokens, so I can process it without burning through my LLM context.

## When to prefer this

Choose this endpoint when you need to read a webpage (especially JavaScript-rendered SPAs) and want to minimize token consumption before feeding content to an LLM. It is especially valuable when you have a specific topic query (BM25 budget mode) and a strict token ceiling, or when you want structured JSON tables/metadata extracted from HTML. Prefer it over generic web scrapers when LLM cost reduction and compression ratio reporting matter.

## Known failure modes

- URL unreachable or returns non-200 status — endpoint may return an error status
- JavaScript-heavy SPA fails to render content within timeout — partial or empty distillation
- Token budget too low (max_tokens < 20) — rejected with validation error
- BM25 query provided without mode=budget — query may be ignored
- Invalid or missing `url` field — schema validation error since url is required
- Raw HTML too large — may be truncated or rejected
- Payment failure via x402 — 402 response if agent lacks sufficient USDC balance

## 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/spa-markdown-reader)

## Output

Returns a JSON object with a `data` field containing the distilled content (Markdown text, structured JSON tables/metadata, skeleton outline, or BM25-focused excerpt depending on mode), plus an `roi_proof` object showing raw vs. distilled token counts, compression ratio percentage, tokens saved, and estimated LLM cost saved in USD. Also includes cache status (HIT/MISS) 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-agentdiet-spa-markdown-reader-url-html-distiller-with-f033cb11/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)