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Web URL & HTML Distillation with BM25 Budget Control
Web URL & HTML Distillation with BM25 Budget Control is a paid API for AI agents from preflight.agentdiet.dev, paid per call via MPP, $0.001/call, status unknown (last checked 2026-10-21).
Fetches a URL or accepts raw HTML and distills it into compact, agent-ready tokens using markdown, structured, skeleton, or BM25-budgeted extraction modes
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://preflight.agentdiet.dev/v1/clean-html)
Output
Returns a data object containing distilled content in the requested mode (Markdown text, structured JSON tables/metadata, skeleton outline, or BM25-ranked budget excerpt), along with ROI proof metrics including raw_tokens, distilled_tokens, tokens_saved, compression_ratio_pct, and llm_cost_saved_usd. Also includes cache status (HIT/MISS) and billing details.
Example use cases
Compress competitor pricing page for analysis
“Fetch and distill https://openai.com/pricing into structured mode so I can see the pricing tiers and model names without all the HTML noise.”
BM25-focused research excerpt under token budget
“Pull the content from https://arxiv.org/abs/2305.10601 and give me a budget-mode excerpt focused on 'retrieval augmented generation', keeping it under 1500 tokens so it fits in my prompt.”
Raw HTML cleanup for downstream agent
“I have raw HTML from a scrape — can you distill it into clean markdown? Here's the HTML: <html><body><nav>...</nav><main><h1>Product Features</h1><p>...</p></main></body></html>”
Technical details
Endpoint
GEThttps://preflight.agentdiet.dev/v1/clean-html?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent needs to consume web content efficiently within a token budget — particularly when feeding page content into an LLM context window and cost or context length is a concern. It is superior to raw scraping when you need noise-free markdown, structured extraction, or BM25-ranked relevance filtering. Prefer it over generic scrapers when you need provable compression ROI metrics and LLM cost savings tracking. The budget mode with a query parameter is especially valuable for long pages where only a topically relevant excerpt is needed.
Side effects
- Invalid or unreachable URL returns an error status
- HTML fetch timeout for slow or blocked websites
- max_tokens too low (below 20) triggers validation error
- BM25 query provided without mode=budget may be ignored
- Payment failure via x402 prevents execution
- Malformed raw HTML input may produce incomplete distillation
- Rate limiting on the target domain causes fetch failure
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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