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Web URL & HTML Distiller with BM25 Budget Control
Web URL & HTML 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.
Fetches and compresses a URL or raw HTML into compact, agent-ready tokens using configurable distillation modes including BM25-ranked budget-constrained excerpts
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/context-diet)
Output
Returns a JSON object with a 'data' field containing the distilled content (Markdown, structured JSON, skeleton outline, or BM25-ranked excerpt depending on mode), plus an 'roi_proof' block showing raw token count, distilled token count, tokens saved, compression ratio percentage, and estimated LLM cost saved in USD. Also includes optional cache hit/miss status and billing details.
Example use cases
Compress docs page for agent context
“Distill https://platform.openai.com/docs/api-reference into structured markdown so I can pass the key details to my agent without blowing up the context window.”
BM25 focused excerpt from long article
“I need you to fetch https://en.wikipedia.org/wiki/Transformer_(machine_learning_model) and give me only the most relevant sections about 'attention mechanism' — keep it under 300 tokens using budget mode.”
Extract tables from raw HTML snippet
“Here's a big chunk of raw HTML from a financial report — can you distill it into structured JSON tables and pull out the metadata, ignoring all the navigation and boilerplate?”
Technical details
Endpoint
POSThttps://prompt-guard.agentdiet.dev/v1/context-diet?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to reduce LLM context costs by compressing web pages or HTML documents before passing them to a language model, especially when you have a strict token budget or want BM25-ranked relevance filtering. It is particularly valuable when dealing with long documentation pages, financial filings, or content-heavy sites where only a subset is relevant to a given query. Prefer this over generic scrapers when token efficiency and ROI measurement matter.
Side effects
- URL is unreachable or returns non-200 HTTP status — endpoint may return an error status
- HTML payload is empty or malformed — distillation may return minimal or empty data
- Token budget (max_tokens) too low relative to content — may truncate critical content
- BM25 query provided without mode=budget — query may be ignored
- Rate limiting or payment failure via x402 — request rejected without billing
- Idempotency-Key collision on differing payloads — undefined behavior
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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