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Web URL Context Distiller (BM25 Budget Control)
Web URL Context Distiller (BM25 Budget Control) is a paid API for AI agents from hn-pulse.agentdiet.dev, paid per call via MPP, $0.001/call, status unknown (last checked 2026-10-21).
Fetches a web URL or raw HTML and distills it into compact, agent-ready tokens using configurable modes including markdown, structured, skeleton, or BM25 budget-focused extraction.
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://hn-pulse.agentdiet.dev/v1/context-diet)
Output
Returns a distilled version of the target URL or HTML in the requested mode (markdown, structured JSON, skeleton outline, or BM25-focused excerpt), along with ROI proof metrics showing raw vs distilled token counts, compression ratio, estimated LLM cost saved, and optionally cache status and billing details.
Example use cases
Compress docs page for LLM context
“Fetch https://docs.openai.com/api-reference and distill it into structured markdown — I need the key info but can't afford to dump the whole page into my context window.”
BM25 budget excerpt from research article
“Grab this article at https://arxiv.org/abs/2401.00001 and pull out only the parts about 'transformer attention mechanisms' in budget mode, keeping it under 400 tokens.”
Convert competitor page to skeleton outline
“Distill https://www.notion.so/product into a skeleton outline so I can quickly see the page structure and main headings without all the noise.”
Technical details
Endpoint
GEThttps://hn-pulse.agentdiet.dev/v1/context-diet?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent needs to include web page content in its context window but must stay within token limits or minimize LLM cost. It is especially valuable when you need BM25-focused extraction (only the most relevant passages for a given query), when you want structured or skeleton views of a page rather than raw HTML, or when you need a cost-provable compression with ROI metrics. Prefer it over raw web scraping when token efficiency and agent-readiness of the output are priorities.
Side effects
- URL unreachable or returns non-200 status — fetch error returned
- Invalid or missing url parameter — validation error
- Token budget too restrictive (max_tokens below minimum of 20) — parameter error
- BM25 query provided without mode=budget — query ignored or error
- Raw HTML too large to process within service limits — truncation or error
- Payment/402 not resolved — billing error blocking execution
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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