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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 prompt-guard.agentdiet.dev, paid per call via MPP, $0.001/call, status unknown (last checked 2026-10-21).
Fetches and compresses a URL or raw HTML into compact, agent-ready tokens using markdown, structured, skeleton, or BM25-ranked budget 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://prompt-guard.agentdiet.dev/v1/prompt-compress)
Output
Returns a distilled version of the webpage or HTML in the requested mode (Markdown, structured JSON tables/metadata, skeleton outline, or BM25-ranked budget excerpt), along with ROI proof showing raw token count, distilled token count, tokens saved, compression ratio percentage, and estimated LLM cost saved in USD. Also includes cache hit/miss status and billing details.
Example use cases
Research page compression for LLM context
“Fetch the Wikipedia article at https://en.wikipedia.org/wiki/Transformer_(machine_learning_model) and distill it into markdown under 1500 tokens, focusing on 'attention mechanism', so I can include it in my prompt without exceeding my context limit.”
Structured data extraction from product page
“Take the HTML from this e-commerce product page and distill it into structured JSON tables so I can pull out the specs and pricing cleanly — here's the URL: https://www.apple.com/macbook-pro/.”
Skeleton outline of documentation site
“Give me a skeleton outline of https://docs.openai.com/api-reference so I can quickly see the top-level structure and navigate to the right section without reading the whole page.”
Technical details
Endpoint
GEThttps://prompt-guard.agentdiet.dev/v1/prompt-compress?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to compress web content or raw HTML into a token-efficient format before feeding it to an LLM, especially when working under strict token budgets. Ideal when you need BM25-ranked relevance filtering to focus on a specific topic within a large page. Prefer over generic scrapers when you need built-in ROI metrics (tokens saved, cost saved) and multiple distillation modes (markdown, structured, skeleton, budget).
Side effects
- Missing required 'url' parameter returns validation error
- Unreachable or invalid URL causes fetch failure
- mode=budget without a 'query' or 'max_tokens' may return unfiltered content
- Very large pages may exceed processing limits
- Payment failure via x402 prevents execution
- HTML too malformed to parse returns partial or empty distillation
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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