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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 mcp-security.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 with token ROI reporting
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://mcp-security.agentdiet.dev/v1/prompt-compress)
Output
Returns a 'data' object containing the distilled content in the requested mode (markdown text, structured JSON tables/metadata, a skeleton outline, or a BM25-focused budget excerpt), plus an 'roi_proof' object showing raw_tokens, distilled_tokens, tokens_saved, compression_ratio_pct, roi_multiplier, and llm_cost_saved_usd. Optionally includes cache hit/miss status and billing info.
Example use cases
Token-budget research on live docs
“Fetch https://docs.openai.com/api-reference and give me a BM25-focused excerpt about function calling, keeping it under 300 tokens — and show me the ROI proof of how much I'm saving.”
Structured extraction of a product page
“Distill https://vercel.com/pricing into structured JSON tables so I can compare tiers without burning thousands of tokens on raw HTML.”
Skeleton outline for navigation
“Give me a skeleton outline of https://developer.mozilla.org/en-US/docs/Web/JavaScript so I can understand its structure before deciding which sections to read in full.”
Technical details
Endpoint
GEThttps://mcp-security.agentdiet.dev/v1/prompt-compress?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an agent needs to read a live webpage but must minimize token consumption — especially when working with documentation, product pages, or news articles that would otherwise exceed context windows. It is uniquely useful when you need BM25-focused extraction around a specific query topic with a hard token ceiling, or when you want quantified ROI proof of compression savings. Prefer it over generic scrapers when you care about LLM cost efficiency and need clean, agent-ready output rather than raw HTML.
Side effects
- URL unreachable or returns non-200 — fetch failure with error status
- URL content is too large or binary — no meaningful text to distill
- mode=budget without query or max_tokens — may return unfiltered content
- Invalid or malformed URL input — validation error
- Token ceiling too low (below 20) — rejected by schema validation
- Paywalled or bot-blocked pages — returns limited or no content
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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