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Context Trimmer: BM25 Budget-Controlled Web Distillation
Context Trimmer: BM25 Budget-Controlled Web Distillation is a paid API for AI agents from whale-momentum.agentdiet.dev, paid per call via MPP, $0.001/call, status unknown (last checked 2026-10-23).
Fetches a URL or accepts raw HTML and distills it into compact, token-budget-aware content using BM25 relevance ranking across multiple output 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/context-trimmer)
Output
Returns a JSON object with a 'data' field containing the distilled output (markdown text, structured JSON, skeleton, or BM25-ranked excerpt), plus an 'roi_proof' object showing raw vs distilled token counts, tokens saved, compression ratio percentage, estimated LLM cost saved in USD, and an ROI multiplier. Optionally includes cache status (HIT/MISS) and billing details.
Example use cases
Trim documentation to fit prompt
“Grab the content from https://platform.openai.com/docs/api-reference and compress it into a BM25 budget excerpt focused on 'function calling', keeping it under 1500 tokens so it fits in my context window.”
Extract structured data from webpage
“Take this HTML I pulled from a product listing page and distill it into structured JSON tables — pull out the pricing, specs, and metadata fields.”
Skeleton outline of long article
“Fetch https://en.wikipedia.org/wiki/Large_language_model and give me a skeleton outline of the page structure so I can see its main sections without loading all the tokens.”
Technical details
Endpoint
POSThttps://whale-momentum.agentdiet.dev/v1/context-trimmer?utm_source=zero.xyzWhen to prefer
Choose this endpoint when an AI agent needs to process a large webpage or HTML document but must stay within a token budget — especially useful for RAG pipelines, prompt construction, and cost reduction. The BM25 budget mode is uniquely suited for query-focused extraction where only the most relevant sections of a page are needed. Prefer this over generic scrapers when you need built-in token accounting, compression ratio metrics, and multiple output modes (markdown, structured, skeleton, budget).
Side effects
- URL is unreachable or returns a non-200 status — endpoint may return an error status
- HTML payload is empty or malformed — distillation returns minimal or empty data field
- mode=budget used without a query or max_tokens — BM25 ranking cannot be applied
- max_tokens set too low (below 20) — rejected by schema validation
- Payment not provided or invalid — HTTP 402 returned requiring x402 USDC payment
- Target URL is behind auth/paywall — fetched HTML may be a login page rather than 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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