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Web URL Prompt Compressor with BM25 Budget Control
Web URL Prompt Compressor with BM25 Budget Control is a paid API for AI agents from whale-momentum.agentdiet.dev, paid per call via MPP, $0.001/call, status unknown (last checked 2026-10-21).
Fetches a URL or raw HTML and distills it into compact, agent-ready tokens using markdown, structured, skeleton, or BM25-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://whale-momentum.agentdiet.dev/v1/prompt-compress)
Output
Returns a distilled version of the target webpage as markdown, structured JSON tables/metadata, a skeleton outline, or a BM25-ranked budget excerpt, along with ROI proof metrics showing raw token count, distilled token count, tokens saved, compression ratio, and estimated LLM cost savings. Also includes cache status and billing details.
Example use cases
Compress Stripe docs for agent context
“Fetch and distill https://stripe.com/docs/api into structured mode so my agent can understand the API without blowing its context window.”
BM25 budget excerpt for research
“Pull the content from https://openai.com/research/gpt-4 in budget mode, focus the BM25 query on 'multimodal capabilities', and cap it at 300 tokens.”
Skeleton outline of a long article
“Get the skeleton outline of https://en.wikipedia.org/wiki/Large_language_model so I can see the section structure without reading the whole page.”
Technical details
Endpoint
GEThttps://whale-momentum.agentdiet.dev/v1/prompt-compress?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need to fit web page content into a limited LLM context window, reduce token costs before passing web content to a language model, or extract only the most relevant sections of a page using BM25 scoring. It is especially useful for agentic pipelines that routinely fetch documentation, articles, or structured web pages and need a cost-efficient, token-aware distillation step rather than raw HTML or full-page scraping.
Side effects
- Invalid or unreachable URL returns an error status
- max_tokens below minimum of 20 rejected with validation error
- mode=budget without a query may produce unfocused results
- Raw HTML too large may time out or be truncated
- Paywalled or bot-protected pages may fail to fetch
- Missing required 'url' parameter returns a 400-level error
- x402 payment failure blocks access if payment is not completed
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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