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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 onchain-risk.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 BM25-ranked extraction with configurable output modes and token budgets
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://onchain-risk.agentdiet.dev/v1/prompt-compress)
Output
Returns a 'data' object containing the distilled content in the requested format (markdown, structured JSON, skeleton, or BM25 excerpt), along with an roi_proof block showing raw_tokens, distilled_tokens, tokens_saved, compression_ratio_pct, and llm_cost_saved_usd. Also includes cache status (HIT/MISS) and billing details.
Example use cases
Fitting docs into LLM context window
“Compress the Stripe documentation at https://docs.stripe.com/api into budget mode, focused on 'authentication and API keys', with a strict cap of 500 tokens — I need to fit it into my agent's context window.”
Structured extraction from a news article
“Fetch https://techcrunch.com/2024/01/15/openai-announcement and distill it into structured mode so I get the key tables and metadata in JSON format.”
Skeleton outline of a long research paper
“Pull the content from https://arxiv.org/abs/2401.00001 and give me a skeleton outline so I can see the section headers and document structure without reading the whole thing.”
Technical details
Endpoint
GEThttps://onchain-risk.agentdiet.dev/v1/prompt-compress?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent needs to ingest web content but must stay within a token budget — especially for LLM pipelines where raw HTML would blow context limits. The BM25 budget mode makes it uniquely suited for targeted extraction from long pages. Prefer it over generic scrapers when token economy and ROI measurement matter, or when you need structured JSON tables, skeleton outlines, or query-focused excerpts rather than raw page dumps.
Side effects
- Invalid or unreachable URL returns an error status
- URL blocks bots or requires authentication, resulting in empty or partial content
- max_tokens set too low may truncate critical content
- BM25 query mode requires both query and max_tokens parameters
- Raw HTML input may fail if malformed or extremely large
- Payment failure via x402 results in 402 response and no data returned
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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