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HTML-to-Markdown Web Distiller with BM25 Budget Control
HTML-to-Markdown Web Distiller with BM25 Budget Control is a paid API for AI agents from prompt-guard.agentdiet.dev, paid per call via MPP, $0.001/call, status unknown (last checked 2026-10-21).
Fetches a URL or processes raw HTML and distills it into compact, agent-ready Markdown, structured JSON, skeleton outline, or BM25-focused token budget excerpt
Price / call$0.001
Success—
StatusUnknown
How this service works
Distill a URL or raw HTML payload with BM25 budget control (Live x402 v2, IETF MPP & MCP endpoint at https://prompt-guard.agentdiet.dev/v1/html-to-markdown)
Output
Returns a 'data' object containing the distilled content (Markdown string, structured JSON, skeleton outline, or BM25-focused excerpt depending on mode), plus an 'roi_proof' object showing raw token count, distilled token count, tokens saved, compression ratio percentage, and estimated LLM cost saved in USD. Also includes optional cache status and billing metadata.
Example use cases
Token-efficient research page extraction
“Fetch https://en.wikipedia.org/wiki/Transformer_(machine_learning_model) and distill it into markdown, keeping only the sections relevant to 'attention mechanism' within a 300-token budget.”
Structured data extraction from product page
“Take this product page URL https://example.com/products/widget-pro and distill it in structured mode so I get the tables, metadata, and specs as clean JSON.”
Skeleton outline of a long article
“Can you fetch https://longblog.com/2024/ai-agents-explained and return just the skeleton outline so I can see the section structure without reading the whole thing?”
Technical details
Endpoint
GEThttps://prompt-guard.agentdiet.dev/v1/html-to-markdown?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent needs to read a webpage but must stay within a strict token or cost budget, or when raw HTML is too noisy for direct LLM consumption. Especially useful for BM25-focused extraction where only query-relevant passages are needed, or when structured/skeleton modes help agents navigate large documents. Prefer over generic scrapers when token ROI metrics and compression ratios are needed to justify LLM processing costs.
Side effects
- URL is unreachable or returns non-200 — fetch error returned
- HTML payload is empty or malformed — empty or error distillation result
- mode=budget used without providing query or max_tokens — may default or return error
- Token ceiling too low (below 20) — validation error
- Payment not provided or insufficient — HTTP 402 payment required response
- Target URL blocks headless fetch (anti-bot) — empty or partial content
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| urlrequired | string | Target webpage URL to fetch and distill (or builtin://stripe-docs) |
| html | string | Optional raw HTML string to distill directly without fetching |
| mode | string | Distillation mode |
| query | string | BM25 focus query when mode=budget |
| max_tokens | integer | Strict token budget ceiling when mode=budget |
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| datarequired | object | Distilled Markdown, structured JSON tables/metadata, skeleton outline, or BM25 budget excerpt. |
| cache | object | |
| statusrequired | string | Execution status ('ok') |
| billing | object | |
| roi_proofrequired | object |
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