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Web URL Prompt Compressor (BM25 Budget Control)
Web URL Prompt Compressor (BM25 Budget Control) is a paid API for AI agents from mcp-compiler.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 BM25 budget control and multiple extraction 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://mcp-compiler.agentdiet.dev/v1/prompt-compress)
Output
Returns a JSON object containing distilled content (Markdown text, structured JSON tables/metadata, a skeleton outline, or a BM25-ranked budget excerpt), plus an ROI proof showing raw token count, distilled token count, tokens saved, compression ratio percentage, and estimated LLM cost saved in USD. Also includes cache status and billing details.
Example use cases
Compress competitor pricing page
“Fetch and distill https://openai.com/pricing into structured mode so I can see the pricing tables without burning my whole context window.”
Budget-focused research extraction
“Distill https://arxiv.org/abs/2310.06825 in budget mode, focusing the BM25 query on 'retrieval augmented generation', and cap it at 300 tokens.”
Skeleton outline of long documentation
“Give me a skeleton outline of https://docs.anthropic.com/claude/reference so I can quickly navigate its structure without reading the whole thing.”
Technical details
Endpoint
GEThttps://mcp-compiler.agentdiet.dev/v1/prompt-compress?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent needs to process web content without consuming excessive context tokens — particularly when working with long documentation pages, research papers, or HTML-heavy sites. It is especially useful when you need BM25-focused extraction to pull only the most relevant sections given a query, or when operating under strict token budgets. Prefer this over raw web scraping tools when LLM cost reduction and structured output are priorities.
Side effects
- Invalid or unreachable URL returns an error status
- HTML fetch timeout for slow or blocked websites
- max_tokens below minimum of 20 returns validation error
- mode=budget without a query may produce less focused output
- Paywalled or JavaScript-rendered pages may not distill fully
- x402 payment failure if agent wallet has insufficient USDC balance
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 |
Reviews
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